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Agenda Item - 2022-01-04 - Number 8.1 - Canal Area Master Plan 8.1 rr .... —i, �:�,. y .,. .'. .- �. . a ..r _ Iu •�'. �,�' L t- y..-- `, d''- -.., r^..' =r --.s4A..-.'' - .-- _ y p-• 3Sr - � • •lfir_ 'L•S. f a _ . -�F s Ill .J- r z- .sue ••: +'r -L • e •• • CANAL AREA MASi LKPLAN , #n } CITY OF LAKE OSWEGO, QREGO -N ` } # # • µ" • _ '3 4 * LA t s s, • ! _ at. - ..�,t- .1 r, _ v T r b �_-•'+ i • ' .:,i- ' s 'Y. .t ';�Y'- .s.fig4. - - a 1.• - 'e - t r ✓ - -.!.' ! -..- . •t, • t. .c t} .. .t.' •., i .., r •i• r .-� - _,.f iI sr r ri ' -�- :.�.— a►- -. ��i..y _ . '� - _ r _ i� 1. x- -fig-)"'`-." 't a�c�#ter i '4 .s_ ..:y ts,� i --lam' -: r r� T <_ .-. * ,. - ;-1•h•r: - e► - r r v'- ;. '•' s. l+F. :x u..r s - - - +E-�?r�•..fi - . _+1 :�^,. .:X;' r r ' - fix: _ j" . ri 4F +1w' # ti • a - _-. },.klee;:'^ .T^x �:+r}' `- a"^yr '. !, .-iT y� '�: _ - t -'rl•.• : .' -- - 4 i . F�. ' r.' * ram __-}r,,. _ _ ,,� ,yrr y "_ 'l 1 4s>!S c .e- .. •~ tr.,',n '. JF�. - f r --;*- - +i_ II t -r •-.ir.'-.�' _ .t;- "'�'! •- +► _ _._ •- - • -• - - - I• ri: '1 s'►.? y _s r�' _ i r _ r`• +�s .n .r' ,r• - _ _ • * 4•, )i i..F» :u IqiiII fi si q •_ ,re _* ...y.n '•0 V to y �. .12r �t r c I" ' l : i; .1. a' .- =.fir '.,�,.,,: ••# x- _ ,j�. � 't- 'am r�. -.a e. `` *" ► i i;,�vs� a. "`*j i '.r�'i s++- r d ---; - : `• aCt..� 1 u 'a ,:;.__,I.:'mil ~ - _ wit. .- It. _ .- -jiff' ... Y�.g'-s - +eyeh. ,z` ,2 met "''Z f {t- �i w.. a'•�rr�• Y _ t r� _Jr.,: -�i. - jam. - 3 r $1, _ . . .... . _ ......,-• '•_ P- N, ▪ •�i., 3...,...s5 _ -Y _ 't -a4`SS. .:Y ...... _�¢-b• - .sr .!!!... ,--4 „ !'' sr - __ r _+-f.,.. :ate . fP _y ;s 5,,. `� 5 "' . ^: +. ?t }"i` - -�F� .f'� 3E4 C - _ T' j �' '� f=.:= _'� z 't. •w23 _ .:.3'1 :`:-:',;.,-T,4 :p. .�.'M r3 E i t` j` A _ • , 's' y� r ��. a- i s i •�- � f4W r'• - •' +-r'i - Lr- - µ, r�o-r 44.?: �"', *ya y, 4 -1▪f. 1.h- ? 'i± * .:s r X# ; - ir -.*f ._ 4t i tics 7 ▪ >•yx :'_ T �= a' i --,r' c bl, %,�� � ue.` tea. -.-,0,-;-- ill It +� ▪ `� i '.s-" r 4- - - _ .ty :9`ei tee' , �" x r ,+„ ---..:t'-.'.. sib y'� .rah "r a. z �� -'4: ',rs u'-.�r _; x�, -,-1;;.:-7-, "1-:"; i� . r • -. � '' GREEN WORKS Y ORKS P.C. ^�ac'bsr #' t `� ¢ }.•g - . 11 t ? _ �" a LANDSCAPE ARCHITECTURE + ENVIRONMENTAL DESIGN y f: y ,. '' '--� ` s _` '_ -1. --LIP'i'l' ' - • ".0.:.,-,:- •_, ,, t-,--,—..: - -:-. trZ_Ik:'''.:-4-ig'iv,'***.z-'4:4,,,::::-'-'..„..i. 'I • ,4 .-„,.4_1..1..3v.-a....,,.L.,Z„ ...,. "............1.,'.'7,1,5..'-7,5t. ' ,f r'-. . £$RUr4R1` 2001 z 'Y - si ..+F_. - 'k '5 ��E- '4. "'-2ai`1 f tan Y ii l'a -."yy 1. . ..-„tc-.„....4-.".4v.-1--."' „'"..S.,:-,,-,_._,..A..,,,-__--.,.,°_A•'.5„e.... ,. =flr __ -tr�xc� _ r'_ `x - 'If ' -S� !`. ? i� 'r y 3.'3. s ]! •* `�44 -`� Ta 4. •Z- V 1. —`�j• ., 1 ._ i it __i.• a I 1 ' I1 Y. t , Rionii. TABLE OF CONTENTS Iv 1 .: `� - .. +.+ � Introduction 1 Implementation Plan 24 pi., `� f ..1 Purpose of the Master Plan Introduction _-Ju i► ii. Park Vision Statement Immediate Implementation Phase � 4 .� � Phase One I • y �► }_ Executive Summary 2 Phase Two ` r' Master Plan Goals Key Elements of the Master Plan '"1 "`r r .y.i . * • Description of Overall Costs .'4 ill CI 41111rAt -.1 ' .- Site Description 5 n •, Site History '` Jle -I--,.:= Hydrology I Vegetation Neighborhood Context .i. ... . "` Key Features I Previous Planning Efforts III The Master Plan 8 I I The Planning Process Master Plan Elements of the Master Plan II Management and Maintenance Plan 14 Introduction III Goals and Objectives Existing Conditions Vegetation &Management Recommendations I I Invasive Plant Control Plant List II II II • II CANAL AREA MASTER PLAN City of Lake Oswego, Oregon IIIGreenWorks, P.C. II r I I ACKNOWLEDGEMENTS Canal Area Open Space elan Advisory CQmmiitee Chris Roth, Natural Resources Advisory Board Stephanie Wagner, Parks and Recreation Advisory Board Nancy Floerke, Friends of Bryant Woods Park Steve Lundt, Lake Oswego Corporation Stuart Dunis, Lake Oswego Corporation Sharon Tuppan,Three Rivers Conservancy Rich Refvem, City of River Grove Aggie Moorad, Rosewood CPO Marseda Lang, Rosewood CPO Joel Johnson, Blue Heron NA111 Erin Fleming, Blue Heron NA City of Lake Oswego Chris Jordan, Open Space and Project Management Deborah Lev, Open Space and Project Management Joe Collins, Engineering Department Kathy Marcott, Engineering Department GreenWorks RC, 111 Mike Abbate David Elkin Lies! Lackaff I I ■ 1NTRODLCTON Purpose of the Master Plan Park Vision Statement _ _F-,r s'f : -_ IIThe Canal Area Master Plan establishes a vision for the The Master Plan is formulated to accomplish the following _ ' °` ' +•r> enhancement and connection of approximately 61 acres of i +- ' `-lb`' ; ' 'i PP Y vision statement developed by the Advisory Committee: , - . _. •�-_ � , ., II natural open space for wildlife habitat, passive recreation, and ''-.--•;; ,� natural resource protection. The masterplan identifiesgoals 1 ¢�. ` ►t .• p The City and citizens of Lake Oswego will t3 - and projects for implementation, accompanied bydirection protectand conserve the natural resource '. t f 1 , r. ' P l P P 't-N, II for city staff and volunteers to concentrate their enhancement values of the parks of the CanalArea, while s - f tip,. , �. and restoration efforts. providing public access to and enhanced � . .•f - ` ---. 1 The protection and enhancement of this unique natural appreciation of these natural areas for the J. ,, ,_4,fl' '; _ ' `` f 11 -- q general public. '-. `' f$ ; . ,e -. 1111 resource will provide the city and surrounding neighborhoods S p t 'r _ ;' _. �, y .— f' with a varietyof benefits including: -� ;i.-. - ', _-<< k� }.II . • Protection and enhancement of natural vegetation _ - 's y { • Improvement of wildlife habitat 0-A. - r - = ,:�� _'9 i - INumerous environmental educational opportunities • ^ • ��_ • Opportunities for passive recreation - II • Stormwater management _ ;* r; E !:1; �.t • Overall increase in awareness and appreciation for the v °' ,,' =f� °' ` • •4_i- k ; t' surrounding natural resources s cf� `N. ,� IIIThe Canal Area is a wonderful place for visitors to experience • 0 or J 4 ' • a variety of ecosystems. Visitors, volunteers, and school - fi�.,,# °'' 111 children will be able to experience nature first-hand through _ _ '� 11. �4 .} . ,_* �4 ,. .1 recreation, environmental education, and restoration projects. t* t' -,,,,,-;•..._.--,-r Bryant Woods Park .f :A Bryant Woods Park I - 111 City of Lake Oswego, Oregon CANAL AREA MASTER PLAN II GreenWorks, P.C. I I I II EXECUTIVE SUMMARY III 1 Master Plan Goals Key Elements of the Master Plan '� — • ",,,► This Master Plan effort required a foundation of project goals The Master Plan envisions a dynamic natural area for peopleI 3 ;, - and objectives. The Advisory Committee, made up of repre- and wildlife alike made up of the three individual park tracts ` -•- .'.1 sentatives from surrounding neighborhoods and local organi- of Bryant Woods, Canal Acres and River Run. These tracts '=, �► • f4 zarions, established the following goals to set the framework will be linked together to form a unified whole, with similar I -; for the design and planning of the park (Advisory Board materials, themes and types of facilities and improvements. Members are listed on the inside cover under The resulting Canal Area complex of parks will function as a --, •. Acknowledgements). These goals rake into consideration an natural recreation facility for residents, providing for passive . F _ entire range of opportunities for the protection and enhance- activities such as walking and nature study. Facilities will be f'- - meat of the Canal Area Open Space: developed in key high use locations to minimize impacts on , ._ ,-+ natural functions and processes within the parks. Improve- A. Protect the environmentally sensitive lands of Bryant • Woods, Canal Acres and River Run Parks, consisting of meets will blend with the site by utilizing indigenous materi- • • wedands, stream corridors, and tree groves. als to the greatest extent possible, consisting of elements such �, as crushed rock trails, wood boardwalks, and low stone walls River Run Park(West) B. Improve pedestrian and bicycle routes along Childs in select places. Road between Sycamore Avenue and River Run Drive. The Master Plan is illustrated on page 11. Three of the 1 C. Facilitate safe pedestrian access between all three parks: primary goals are described below. Bryant Woods, Canal Acres and River Run Park. 1. Connection to all three parcels D. Promote public appreciation of the beauty and ecologi- cal complexity of the parks. One of the major goals of the project was to provide a safe, user friendly connection to all three parcels of land. CurI - E. Create enhanced opportunities for wildlife movement in the area. reedy Bryant Woods and Canal Acres are divided by Childs Road, a very busy arterial with no shoulder pathways. River F. Limit impacts of vehicle traffic and parking on sum- Run Park lies at the southern most area of the site and isI rounding neighborhoods. connected by a narrow section of land along the east bank of G. Encourage ease of access to the parks on foot. the canal. I H. Reduce use of the parks for vandalism and illicit activi- In the Master Plan, safe pedestrian crossings of Childs Road ties through improved security have been located just east of the intersection at Indian I. Leave the east section of River Run Park unimproved Springs Road, and west of the new Childs Road bridge near until a later date. the parking lot. J. Minimize development of park facilities within Canal Bryant Woods Park is linked to the two other parcels by a Acres Park. pedestrian trail south of Childs Road on the eastern edge of Canal Acres Park. This trail continues south through Canal • Acres Park, along the west side of the unimproved Canal Road. Ell CANAL AREA MASTER PLAN City of Lake Oswego, Oregon 1 GreenWorks,P.C. I II I I I II II I The connection between Canal Acres and River Run Park has 3. Environmental education been made by the placement of a new pedestrian bridge over With the enhancement of the natural resources of the Canal IIthe canal near the existing headgate. Area comes the opportunity for environmental education. An The pathways provide the visitor with a loop trail through the example is the expansion of the open water wetland and II whole range of ecosystems found throughout the three construction of the site center. The site center is located to parcels. provide the user with long views down the wetland meadow 2. Protection and enhancement of natural resourcesand help connect the user with the open water wetland. II Interpretive signs will be placed throughout the park to There are many significant natural resources found in the explain the natural processes or ecology of the park. One sign Canal Area. Native vegetation provides travel corridors, might compare the different types of vegetation found be- _ cover, and an abundant food source for many species of tween upland and riparian forests. Another sign might beIII �_ wildlife. The open water and wetlands also provide good located near the water's edge and explain the hydrology of the habitat and ecological diversity while providing visual appeal site. It is these details that will provide the user with a deeper I for users of the park. Unfortunately, natural resources such as the ones found in Canal Area are disappearing rapidly due to understanding and respect for the natural resources of the Bryant Woods Park Canal Area. development pressures. IIIt is the goal of this Master Plan to protect and enhance these natural resources. In doing this, the Canal Area will not only 111 benefit ecologically, but users of the park will leave with a better appreciation for the natural environment. I I S I I IICity of Lake Oswego,Oregon CANAL AREA MASTER PLAN Ell GreenWorks, P.C. I ■ I I I . a .. r .,a. ".r. . .. ... • i 4 • -� PHASE TWO '. �.s` .i ` - =`. The proposed improvements included in this Master plan are _ ' 46 , = expected to be implemented in phases, over time. The total $350,000 _ • _ ", lt' -- _.t. ' estimated cost for complete implementation of the Master . .. - - ' • : too :n!, , ; '' Plan, including design, engineering and construction is The following will be accomplished in this phase: - _ W 7- slightly over $1,000,000. The following are the recom- • New secondary trails, interpretive signs, nuisance plant 5• -}' F• mended phases and their estimated costs. removal and native plant enhancements in Canal Acres Park. 111 T IMMEDIATE PHASE (FY 2000) River Run Park primary and secondary trails, primary ? . . • .:„. ,., • III ......_ .. • ,\ � $120,000 entry and parking area, expanded open water wetland Indian Springs The following will be accomplished in this phase: with overflow control structure and pipe, boardwalk, bulletin board, river overlook, interpretive exhibits, site • Bryant Woods primary entry including: bus pull-out, furnishings, nuisance plant removal and native plant parking, site identification sign, bulletin board and enhancements. plaza, toilet enclosure, site furnishings, and related revegetation. • Secondary entry sign at Canal Acres Park and site identification sign at River Run Park (West). PHASE ONE $535,000 The following will be accomplished in this phase: • Bryant Woods primary and secondary trails, site center, expanded open water wetland, boardwalks, secondary entry sign, wildlife observation deck, weir crossing, rest1 spots interpretive exhibits, site furnishings, nuisance plant removal and native plant enhancements. • Primary Trail from Childs Road to new bridge crossing. • New pedestrian bridge across canal into River Run Park. 1 • Fencing and planting of private encroachments. 4 CANAL AREA MASTER PLAN City of Lake Oswego,Oregon GreenWorks, P.C. I I II SITE DESCRIPTION 111 •.. „.....,,.... ..,.,..,... ,_ . -. , . , -,...,,ft ..: . , . ... ... 3. - Site History Hydrology - iThe Canal Area is located in an area originally inhabited by The hydrology of the Canal Area is primarily influenced by Native Americans of the Tualatin and Clackamas tribes. groundwater. Three perennial streams and anopen water :r __ II Because of the area's wetness, the area may have been a forag- ing creek are found in Bryant Woods Park. Groundwater levels y `` "� site for camas bulbs, an important food staple for the often rise to create seasonal ponds and wetlands throughout . . 'F � - -, indigenous people. along :�� _ _. the site_ A 50-fit. ditch Childs Road collects water from �-• =� � �111.7 �- .. II Pioneer settlers arrived in the area during the 1850's. Many the springs and a culvert under Indian Springs Road. The _ _-,s water then flows northeast through the perennial creek that people settled around the area near Sucker Lake', which is has a gabion darn installed at its northeast end. The dam - _ - now commonly known as Oswego Lake. The canal, which helps fill the excavated pond during the rainy season. There II cuts through the project area, was constructed from 1871 to is a second excavated pond found in the northern portion of 1873 to improve the transportation of goods from the II Tualatin River to Lake Oswego. On January 21, 1873, a Bryant Woods Park. tualatrn River River Run Park steamer carrying 200 bushels of wheat used the canal for the During the rainy season, high seasonal surface water in Canal ,:: first time. In 1939, the canal was widened from 25 to 40 feet. Acres is allowed to flow north through open culverts under With the construction of the canal, Oswego Lake increased 111 from 2 314 miles to 3 112 miles in length. Childs Road, and into Bryant Woods. _ _ ' ' Groundwater levels in River Run reach levels that will inun-III `- From the 1940's through the 1970's much of the area sur- roundingdate low-lying areas and create seasonal ponding in three _ r_ _ the Canal Area was developed.Walter Durham identified seasonal wetlands in the park. The Tualatin River r' - owned 57 acres of land, which included much of Bryant probably exerts the greatest influence over the site due to "' + - `Y - II Woods Park. The City attempted to purchase the land from occasional flooding such as the '96 floods. The entire park : : .`ems;;r Mr. Durham, but negotiations failed. In 1979, the Cityof falls within the FEMA 100-year flood lain. rt, ;%.;: g Ye P � _ Lake Oswego, with the help of The Friends of Bryant Woods The canal which brings water from the Tualatin River to 111 Park and the Clackamas County League of Women Voters, Oswego Lake bisects the area. purchased 18.8 acres of land, which is now known as Bryant 1'• Woods Park. - - - - IIIIn 1994, the City purchased what is now Canal Acres Park to Canal Headgare prevent the development of a 55-lot subdivision. In 1995, the II City acquired the 2-acre Indian Springs property, which was then incorporated into Canal Acres Park. • Springs Bryant Woods Park 1111 City of Lake Oswego,Oregon • CANAL AREA MASTER PLAN Ell GreenWorks, P.C. I I I I I Vegetation Neighborhood Context 111 The vegetation of Canal Area consists of a wide variety of The Canal Area Open Space is surrounded on three sides by $ +fir = _ vegetation es. The followingvegetationtypes can be s . ;VV. g tyP g low-density residences. The park provides a necessary recre- 3 �, ''•;it ;-ti found in the area: anion area for the surrounding neighborhoods. Currently, ' :•,4 P• Upland Coniferous Forest many joggers, dog walkers, wildlife observers, and school , . - F . , .., children visit the site. Community support for the park is f,. -4 i =.. Upland Broadleaf Forest great, and will hopefully continue and increase with the ," „' r .. 1 ► = �' ; Riparian Broadleaf Forest development of this Master Plan. Y • .....-:' Bottomland Deciduous/Broadleaf Forest Connection to the park is currently limited due to the lack of Scrub-Shrub Thickets a safe pedestrian pathway along Childs Road and adequate . . Meadow/Wetland/Marsh parking facilities. Many people drive and park at the Bryant - Woods parking lot and along River Run Drive to access River - Each of the three parcels that make up the Canal Area has a Run Park. Improving the parking and pedestrian access will mix of these vegetation types. See pages 20-21 for vegetation greatly improve connection to the surrounding neighborhood maps. and overall appreciation for the Canal Area. Bryant Woods contains an upland mixed deciduous and coniferous forest along its western slope. A wetland meadow Bryant Woods Park stretches through the middle of the parcel and contains native meadow species, reed canarygrass, and patches of alder stands. --. The remaining area of Bryant Woods consists of a riparian broadleaf forest made up of cottonwoods, alders, and maples. _. / ". .,,E',." `- i' 'u G "'' Canal Acres consists of mostly bottomland broadleaf species. '•rr t yr7' -`' ...cl E5f_.4^ The park is in the floodplain and is inundated with water {_ ,� � . f1 . _ ,� �� :' -„ ., ,,, - during the rainy season. Alders and Ash trees provide a dense North Entry:-Bryant Wonds tom_- :E {L` cover for much of the site. The site has been protected, and `: therefore provides a significant amount of high quality - habitat and vegetation for the Canal Area. River Run Park provides the Canal Area with a wonderful a _ z • connection to the Tualatin River. The west parcel consists of } `a large meadow with a few pockets of seasonal wetlands. A i I a dense riparian forest exists along the entire southern bank of "` -- 1' the parcel. The east parcel is covered with a riparian forest of - alders and maples. This parcel has been protected over the years and contains a great amount of valuable vegetation and ' Bryant Woods Park habitat along the Tualatin River. Some blackberries do exist River Run Park along the property lines of the east and west parcel. 1 6 CANAL AREA MASTER PLAN _ _ — City of Lake Oswego, Oregon GreenWorks, P.C. 0 I I I U Key Features Previous Planning Efforts IIOne of the essential features of the Canal Area is the variety of In 1984, a master plan for the Bryant Woods Park parcel was vegetation types found throughout the park. This variety developed by Jones and Jones and Ames Associates. This new , II provides a unique opportunity for visitors to experience a whole range of ecological diversity in a limited area. From document outlines many concepts that are parallel to the ones outlined in the 1984 master plan. Suggestions such as en- 1 upland coniferous forests to wetland meadows, to riparian hancement of trails, enlargement of open water areas, replant-111 _ forests alongthe Tualatin, the Canal Area is a unique and of natives species, and improvement of parkingarea and 4 ing p p _° . valuable resource for the citizens of the city of Lake Oswego. pedestrian access were included in the previous master plan. �;.- f.. -� L i'..I 111 Another important feature is the abundance of open water - = • and wetlands in the area. The perennial and seasonal ponds that can be found throughout the area provide wonderful Childs Road U habitat for many wildlife species. These areas also offer an opportunity for environmental education of visitors and school children. Wetland boardwalks and a wildlife observa- I Lion deck have been proposed to bring the individual in for a closer view of the aquatic vegetation and wildlife. 111 Childs Road bisects the Canal Area east to west. This road is _ unsafe for pedestrians to walk along or to cross. Connection • '` of all three parcels is important to the park experience. A safe r" II pedestrian crossing has been proposed at the intersection of Childs Road and the primary pathway that connects all three - parcels.This would provide visitors with safe access to all - " 111 three parcels of the Canal Area. In addition, a new pathway 1 along the south side of Childs Road is included in this Master Plan. `, .. Syr. ll Another connection issue deals with the canal that runs north to south through the Canal Area and divides Canal AcresIII from River Run Park. Connection across the canal is impor- tant for access to all three parcels. Bryant Woods Park II 1 IICity of Lake Oswego,Oregon CANAL AREA MASTER PLAN II GreenWorks,P.C. I i . I I THE MASTER PLAN 1 1 . , ._ The Manning Process I _ The Master Planning process consisted of the following major 2. Provide an interconnected series of walking loop trails, `` - x. steps: which pass through various vegetation communities of --- 1. Site Inventory and Analysis the parks, with strategically placed rest stops and interI - pretive information along the way_ 2. Identification of Site Opportunities and Constraints 3. Provide primary and secondary trails within the parks, III 3. Development of Project Vision Statement, Goals, and with permeable soft surfaces such as crushed rock or Design Program bark dust. - 4. Design Alternatives 4. Provide additional pedestrian access across the Canal. III 5. Site Master Plan 5. Provide limited parking in the Canal Area: 10-15 cars at 6. Construction Cost Estimating and Phasing Plan Bryant Woods, and 4-8 cars at River Run. 1 Entrance to River Run Park(West) 7. Final Documentation 6. Expand and enhance the open water wetland at Bryant Woods Park. The Advisory Committee was integrally involved in the entireI process, and ultimately approved each step along the way. 7. Expand and enhance wetlands along north portion of The Committee relied extensively on the involvement and River Run Park. feedback from citizens, and incorporated public comment 8. Investigate opportunity to daylight existing storm drain into Advisory Committee meetings as well as Public Meet- line which crosses River Run Park. ill ings. 9. Provide an overlook of the Tualatin River at River Run Il Design Program Park. The Design Program was developed in conjunction with the 10. Protect the river access beach along the southeast edge I Project Goals, but is a more derailed list of specific elements of River Run Park. envisioned by the Advisory Committee. This design program 11. Create a new focal area in the center of the Bryant is the list of facilities that were incorporated into the Site Woods site, with a view of the open water wetlands Master PIan. These program elements include: through a possible viewing blind or overlook, with II 1. Provide Primary Entries at Bryant Woods and River seating and integrated interpretive elements. I Run Parks, consisting of orientation & interpretive 12. Expand area of Bottomland Deciduous Forest commu- information, and an enclosure, which could house niry at north end of Bryant Woods Park to help buffer portable toilet facilities on a seasonal basis at Bryant sire from adjacent private residences. Woods Park only. 13. Develop an area of Scrub-Shrub Thicket community along north end of Bryant Woods meadow, as enhanced hiding cover for birds. I I8 CANAL AREA MASTER PLAN City of Lake Oswego, Oregon GreenWorks, P.C. I U II { % II 14. Incorporate clumps of native shrubs and trees within large Meadow community.111 : ', 15. Eliminate overhead telephone wires, fencing and service - - ' access roads, if possible. 8 { II 16. Expand the Riparian Broadleaf Forest community along the top of bank of the Tualatin River in River Run Park. I 17. Discuss opportunities to improve the habitat value and aesthetics of the Canal Head Gate with the Lake Cot- poration. ;` ,t r II "T - . .' 1$. Consider providing pedestrian connection between _ ,.. r��� - ; „ Canal Acres and River Run Park along the west side of lir - z_='�II * the Canal, with a new pedestrian bridge across the canal Bryant Woods Park north of the head gate. 19. Reduce and eliminate noxious weed species throughout I the parks, including English ivy, Himalayan blackberry, , .. and Reed canarygrass. jlio tY" `' r4 ilk. "�„' 20. Expand amount of Shrub Thicket community in River ' - IRun park as edge to Marsh/Pasture community i b. 21. Develop a comprehensive pathway marking and signage 4. ?•.' :c- , "- ' system for the parks. %i: .., 22. Place structural elements such as downed logs or brush I 11 piles along edges of waterways and at forest edges. ' 23. Incorporate interpretive and art elements in the parks, which help explain the history and ecology of the site IIutilizing vandal-resistant materials. River Run Fart: IIIICity of-Lake Oswego, Oregon CANAL AREA MASTER PLAN 9 GreenWorks,P.C. II I I I I Elements of the Master Plan J ( Built upon the Vision Statement, Goals, and Design Program, Primary Entry in Bryant Woods II i the Canal Area Master Plan consists of the following key As you enter the parking area at Bryant Woods Park, you will i t elements: ements: notice a variety of site elements. To the right of the entry, a General Improvements site identification sign is placed. A bus pullout to the left of �; / the entry along Childs Road allows school buses to safely drop -, i::. ` , , • pathway along Childs Road classes off for their environmental education day at the park. P.77, • connectivity between parks and bridge The parking area will accommodate 10-15 cars.The parking �I surface will consist of a pervious paving that will allow for infiltration of runoff into the soil below. To the northwest '`_. J corner of the primary entry, a bulletin board with a map, local V:.'::. rules and regulations, and interpretive displays will help guide j\ 4. + .t your way. Other nearby amenities includes a bench and an p ? . enclosure for a seasonalportable toilet. , IIN Primary Entry at River Run III Ili k SI) The entry to River Run Park will include a parking area that - . will accommodate 4 cars (expandable to 8).The parking111 p. .; � surface will consist of apervious pavingsurface to allow for 3 �,'% y r,A Q q 0 r • infiltration of runoff. A bulletin board with a map of the ‘ ., ; Q,:.•c .-__ Canal Area and local rules and regulations will be located in aIP .. �� ; ___ - -- centrally located plaza space. \ . S`ill �l � % � `' Secondary Entry Points Primary Parking and Entry-River Run Park .':I. ' _ _ —f These entrypoints will be marked bya small site identifica- :S-..- +fit- -i � 11? _ ;9—' tion sign and Canal Area Map. 4.? y�all >, t Primary and Secondary Trails : • _ ``: Primary Trails will consist of 5 foot wide crushed rock path- - _ -'A' ;. ways that will connect Bryant Woods, Canal Area, and River Run Park. The secondary trails will consist of 3 foot wide 111 -,,.-,,,-" ;.,' ;.t . �`__,, _,,,,, native soil and bark mulch, most of which currently exist in ;. - • . - . . . -11 `. , the park. Primary Parking and Entry-firyant Woods Park 10 CANAL AREA MASTER PLAN City of Lake Oswego,Oregon GreenWorks, P.C. MI i i i i s i i 11111 1111 in III i II i II ( 4.' r.1. c ,... Secondary catty ._........,-....-.....,.�•..ww•.«..-... �H_ : '''''' '�1 1 1 V f � 1 • _ tit. `� ur,.u,Loop DonrGwalh �I(�.,r y rL��J{'�r-r•f ,�.._....._... _......._...Existing Access'tto�nG • o„d Res:Spat -.---- - - - ill ,�• a , � '-� }- E„itaacr;iJ SKNSWtuI Pp,rd Secondary Tr.iii IS'wick} — -�. _ 3-- i 4 U..j L Prir:vary Trail i5'Wide) — -"._-. ...._.. - ..-•—-M ...,.-•--._-Lxtcc Os+.vego C:ur.,! 1 _ . }• A. 1 - :14.14. w .I • • Cteadow Rest Spot l �� .1 IT' I W I t_ l .:I.,'..„,,:,..?-",„„_,. Patti boundary,typical :'U1Idbtc Observation Deck' '� 1 •' _ ' - Sur CCNeM GYctland Baar4walr+.--_ ._. -... .._. _ - - t`' S`+..�-_._.:r - .._. .._ ..-- .. Weir Crossing j a& f 1 M1, p S �._..........__._ ..... ...... . r art.;. - r-1access Road Drvcrsls�n Existing Straxrn Channel'•-'- "' '� ' _. -^,.�. Straein Rest Spat Euis1/ling Springs•�16 ,, '. \,� l 1 ,. j j ...___. ..,.._ _ »........�. •-»..= F'r4utary Entry .. ,i, . :'�1. ,..•..•� 'f.._ -i'xrlun{�i,or�70.16t:ars} .. I 1.-' ._.. .._-. 1fl L -wefa Childs ttoaa ariargc pedestrian Cross ny ti tcdestriart Crussmu • Shoulder Walkway - � (r �_ :.1. 9i 1 Sc<undary Trail - -- •. - ` ' n • . Stark bound:my,Typical , . • ' ., -- „,.... .,:ii' :. L Li t Pr rnAry it! t 7 ii 1 _ • • all ?1' i. t • ` �� -.11 �..� ��•�� •- .. •. '- •r �; ---Printing Lot 0-B Cr.rsj 7 .._ 1.1 4, I..j �; ' Li " (yam • ! l Primary entry //�/t1/ Y-J :..I .J I 1_.I i li''' _ 1'7 -- -miyrigiaac7 Slori'adr uu J �_..._..�.�••J J r�•r `i .. i ,+ ' V4Y '�— -� _ 1' - \ r jI • i'L ii.--1E�..IC. /C •: 1 !Z ),..--.-Wc9sand puardwallc 1. JJ }•l l.i N:� o .. •mil_ • - ' Canal Crossing br, .ga �'°r, r iE:asting Noa Gig it y :{r. .... i i4 Secondary Traa NORTH • • A7YJIC ��V��r /�•"T!o~' iY-Aa f a. _-I'C a . ,. , Stiucr 6varlouft— `- Itivcr Access A:eJ 0 100 20D •. .Existing Corr!}arOin Porast Existing Opon CJatar LvctlarsG Enisiing Occldr,ou$Faress Proposed Forest Enhancer/writ l r '•• Shrub � 'Michas '7 (� Proposed Open Stlasar C'ygtland Fi--.- L.....1 Mcddow • City of Like Oswego, Oregon C CANAL ARE PEN PA : ' L. • : ldnuary 1000 I I I I Site Center1 The site center in Bryant Woods Park is the environmental - -. 'v�`y'- ''.- Y_ .ef� y �, education hub of the park. It is designed to accommodate - "=' �� ! `` ., groups ranging from a few casual visitors to an ent:rr° ' ental education class of u to 30 students. Its ce +- '� � -! � �:11:01 , ' �1 location provides visitors with a place to gather, investigate /// ` ' 'the open water wetland, view wildlife, or begin the loop trail. p.Interpretive Exhibits O4 _ , ,.'-:: \ \ Tactile elements, wildlife sculptures, or interpretive panels ' `.* •00 explaining the ecology of the area will be placed at significant ".V "'-1.7X V�. '��,i�'1� 1 •, locations throughout the Canal Area. . . �`. .,* : . -��• 4. , \���'r :��� �t. �� •4,011511111,14 - .,,.. • .+- � SO • a4 ` ,..:, . _,� � . , w:.a% Weir Crossing- Bryant Woods Park , s_. `' ` . _ ►�♦iii # Weir Crossing �. ; iii 11 ,' q�. .�- This new crossing is located in Bryant Woods Park at the ..- _ r := ,r« 1 .. . 'y"'�`'' / ,.... !` n, '. _. existing weir location. This crossing will allow the main _.� ' pathwayto diverge from the existingaccess road, cross the ,r,,. g r . :. �y r _ - weir, and connect with the site center. The crossing will also III ''''� �Niii. '' `, T' 'i • ,x. provide the visitor with unique views of the open water and "�#, 1 ,�f / �;`.,�'• �� wetlands nearby. 1 '',�. N._ .. ' -: J.ti .• ;_ // Access Road A $`��y . - r�, ✓- ` ..�,}�:.��r►��-- 0 The Master Plan envisions leaving this necessary service road -`f- - ':.W '�' f in place, but obscuring it and directing park users off the road ,'.,4 . , may.;`., , .y' ••/. /s/ . : :_,�{, �'; and on to a more pleasing internal primary trail. Overhead . -*+ s,j - - -- • _ _ _ powerlines along the road will be located underground. III Site Center-Bryant Woods Park 10:1 CANAL AREA MASTER PLAN City of Lake Oswego, Oregon _ . GreenWorks, P.C. , II II II II _. . .,_ .. . _ . f�y�a 11 Rest Spots ,,-- . These areas are designed to provide the visitor with a place to �:. ,, . I enjoy the surrounding natural environment. They consist of a • - .,- bench and small amount of crushed rock and flagstones ; ' �, ,•. around the base.- I' Canal Acres Park Wildlife Observation Deck This structure in Bryant Woods Park will allow visitors to get up into the tree canopy and observe the wildlife and wetland views from a different perspective. The surrounding area will e i. be planted to screen the base of the structure to reduce its ,+ 'Is f� `-�#�'' visual impact upon the landscape. . -:-: A • I Expanded Open Water Wetlands � �;r '}F Ii = F'# r ,•. e ' -r t: 1 f F'f J 1://.. I r! - ' t f i.., lily .1' -;•-1 1 �:" .S Reed Can rass currentlydominates the wetlands in Bryant -��.. �.+` �# tP"�! �' �Yg rY r� 1 •Woods Park. The expansion of the open water wetlands will - ,. " • V'•:,5 t _+_yl- ,'pit *-` L.ki i;' % 4 ,I ' P remove reed Canarygrass and sediment from a portion of the �' r 'r,`+ ' ;� :, i , i'i. ' l`r''� .~�f '.'{i. e. wetlands and connect the existingopen water with the sea- _ . ...4... ,`� f '...4, -, ' k 441 sonal pond. In addition, this expansion will provide more . •, r , - _._.... . ... .. .,..„, ; I enhanced habitat and educational opportunities, while pro- r,y- ,'.,tL -,i i �,. __ ..-__.—..., �..,R ..,,� ,�- . ,i~.�F . E 1; 1r tectin significant red-legged froghabitat found in this area. ;, ,i ,tT Ill + \ r ' ` 4S •il River Overlook !` + •i i �!• j 7 1 w l` '+ y �� The proximity of the Tualatin River to River Run Park pro- t _.[ , i• ,,, w ;�:,�+ ., !i 1 _ ,�T��.1 ' I1 vides an opportunity fora connection to this significantOPi.--., •� .� natural resource. The overlook will allow visitors of the park , 1 f, r `'l'� }'- "'� .� -`� ems, "'!-4; •{ ', • to enjoyextensive views upand down the river. r' 7!^^7 '�._ :,�r:,, •__ -. 1 11 : _ . r :.,r►�'c'► + i'..., wig - .►,. pp�} .�_� i� f��+� 4� �,„ .... _ 'r ; � •� l r ,; '±+'~ I rT-r� 7. k�"i 3�._� ���q.; ., .ice do-4,fit - G• • li "Daylighted" Stormdrain •r- `-a~'`�• / +�.�' i••�r'� I,`j �� •"il.- -'—� �+ A stormwater pipe runs from a nearbyneighborhood, through %�— - .,• - "';�` �". _ {`i ' PP g g , River Run Park, and out to the Tualatin River. This - _ , ; `=-• - - " t stormdrain provides an opportunity to drain the pipe to a �y di., - . 1 ,. z` � .� -� surface channel and treat the stormwater in the expanded .-. Illopen water wetlands before it enters the Tualatin River. wildlife Observation Deck- Bryant Woods Park Ii City of Lake Oswego, Oregon CANAL AREA MASTER PLAN all GreenWorks, P.C. II I I MANAGEMENT AND MAINTENANCE PLAN Introduction The purpose of this section is to provide the City of Lake Two additional natural resource objectives are proposed as Oswego and volunteer groups with an overall plan for the pan of this management and maintenance plan: enhancement of the significant natural resources found 1- Enhance structural diversity of vegetation throughout throughout the Canal Area. The Management and Mainte- Canal Area. • Hance plan outlines areas of enhancement by identifying -'` • them on maps found on pages 20 and 21. The enhancement 2. Screen undesirable views of surrounding residences and area's existing conditions and management recommendations structures, and provide adequate buffers from property _ are described in a narrative following the plans. lines. 7? a Goals and Objectives "2, _ -3 x i - The following are excerpts from the City of Lake Oswego _-- '°• Zoning Code, Chapter 48, Section 17, purpose. (48.17 x` -ti ,1 Ysf ' ..N a Sensitive Lands Overlay District) If" y ' , io• 1. Manage the impacts of development on lands with environ- mental and natural resource significance in order to protect the functions and values of wetlands, stream corridors, and River Park tree groves within the Lake Oswego City limits. 2. Establish design and development standards that allow rea- sonable use of private property while protecting important natural resources through innovation in site planning and design and by allowing for density transfer and application of flexible development standards. Project goals excerpts from the Canal Area Master Plan Design Narrative • Protect environmentally sensitive lands of Bryant Woods, Canal Acres and River Run Parks, consisting of wetlands, 1 stream corridors, and tree groves. • Create enhanced opportunities for wildlife movement in 1 the area. I 1 4 CANAL AREA MASTER PLAN _ _ _ City of Lake Oswego,Oregon GreenWorks, P.C. I I I U - ' ,c Existing Conditions , . ., . II River Run Park i '4' Bryant Woods and Canal Acres i`, . A walk through the Park introduces the visitor to bottomland The east and west parcels that comprise River Run Park '. 111 forest dominated by large Oregon ash and Oregon white oak, include several plant communities that are characterized by .: mature upland stands of Douglas fir and bigleaf maple, dense dominant species and current structure. The east parcel has shrub thickets, an open grassy meadow, scattered ponds and a not been logged or significantly disturbed for several decades r ' 111 creek fed by natural springs. Its extensive wetlands and high at least, while the west parcel has been subject to ongoing -`' `. s ` structural and species diversity are unusual in an urban disturbance, such as farming or grazing. II setting, providing high quality habitats for a wide variety of • m- The following plant communities have been identified within - z organisms. the park: Both Bryant Woods Nature Park and Canal Acres Natural -IIII . Area include several plant communities that are characterized I. Upland Broadleaf Forest by dominant species, landscape position, and age. Portions of II. Riparian Broadleaf Forest '? the study area have not been logged or disturbed for many III. Bottomland Broadleaf Forest III years, allowing the development of mature mixed woodland - over much of the Park. IV Scrub-Shrub Thicker Bryant Woods Park III The following plant communities can be observed within the V. MeadowlPasture Parks: (Natural Resource Inventory and Assessment fir River Run I. Upland Conifer (Douglas Fir) Forest Park, Pacific Habitat Services, 1999) _ , II. Upland Mixed Conifer Broadleaf[Douglas fir-Bigleaf - �4 -J maple] Forest • - .- ,-- -• M _V-- - . Ia III. Bottomland Broadleaf [Oregon ash] Forest l.'": :7 - rst � sr; ,+ - IV Scrub-Shrub Thicket ; .• • s IIV. Meadow/Pasture �� ' , ;"` fi,, '(Natural Resource Inventory and Assessment for Bryant Woods INature Park and Canal Acres Nature Park, Pacific Habitat r s Y - Services, 1999) • �.- 111 However, much of the natural plant communities have been �; 3f - `; compromised by the presence of invasive exotic species such '.;.;�.. as Reed Canarygrass, Himalayan Blackberry, and English Ivy River Run Park IICity of Lake Oswego,Oregon CANAL AREA MASTER PLAN Ill GreenWorks, P.C. I I I I Ill Vegetation & Management Recommendations - In the following pages are descriptions and management FE3 Existing ConditionsII ', recommendations for specific vegetation patches. These Little vegetation exists between the existing pathway - descriptions correspond with the areas noted in the Vegeta- and fence along the north side of the park. Currently, III , _ ' don Management Plan maps for Bryant Woods/Canal Acres private yards can be seen through the fence while ' and River Run Park following this section on pages 20-2 1. walking through the park. °" • r Management techniques for specific invasive plants have been it included on page 22. Finally, a list of enhancement species Manar,�ment Recommendations 1 for each vegetation type is included on page 23. Re-plant patch with native plants to provide screening i) "F - - ./�- r of private residences and property line fence. [See Forest i./ , _,_,i - . .- • Bryant Woods Park Enhancement Species, pg. 23] 111 , . : ... - . ! Forest Enhancement Zones Planting should include Nootka Rose to match existing III . _ _ . . , 'n = FE1 Fxisring Conditions planting in this area, along with coniferous trees for ,,/ . ._.t 3 screening. -,, l, f .' I - The forest edge around the parking lot has been invaded r , '/, �� y;' by Himalayan Blackberry Shrub Thicket Enhancement Zones III ., . ' Management Recommendations SE1 Existing Conditions III�. - `.; Re-establish native plants around parking lot by remov- There is little vegetation buffer between the proposed /: ing blackberries [See Invasive Plant Removal. - Hima- pathway and the existing access road. This manage- layan Blackberry pg. 22] and replanting with native went area consists of patches of Reed Canarygrass to understory species [See Forest Enhancement Species — the north, and scrub/shrub community to the south. Native and Non-Native Vegetation Understory, pg. 23].This area will need to be vigorously Enhancement of this area will provide a buffer from the maintained because it is very susceptible to future access road while increasing valuable habitat in the blackberry invasion. park. FE2 Existing Conditions Management Recommendations /11 This vegetation patch lies between the existing access Due to the wetness of the area, water tolerant wetland road and the proposed main pathway. Screening of the shrubs should be planted in this area. [See Wetland existing access road from the main pathway is desirable. Enhancement Species—Wetland Shrubs, pg. 23] 1 Management Recommendations SE2 1- Plant patch with native forest species to provide screen- SE4 Existing Conditions ing of access road. [See Forest Enhancement Species, pg. These patches currently are covered in meadow plant 23] species. These areas are unique in the fact that they have no presence of Reed Canarygrass in them. En- hancement of these patches will provide the park with 1 6 CANAL AREA MASTER PLAN City of Lake Oswego, Oregon GreenWorks, P.C. I I I I IImore valuable shrub thicker habitat and visual interest. begin to shade out the Canarygrass and the native "x-` T Management Recommendations IIIPlant areas with shrub thicket species. [See Shrub species to get established. The remaining area should , "V = 1 i. - � be planted with wetland shrubs due to the proximity to I r the open water [See Wetland Enhancement Species - ;'v r 4, - Thicket Enhancement Species, pg. 23] Wetland Shrubs, pg. 23] 11 SE5 Existing Conditions Meadow Enhancement Zones This patch is currently covered in a thin forest overstory ME1 - - - I with some large thickets of blackberries. There is a ME2 Existing C'ondiri�n5 wildlife observation deck proposed for this area. Jr is _ desirable to provide screening around the base of the These patches are currently covered in some forest and - _- ," - _ - II observation deck to reduce its visual impact upon the shrub thicket communities. Establishment of meadow _ park while nor impacting views from the top of the species in these patches will open views along entire • deck. length of park while protecting valuable vegetation River Run Park 111 Management Recommendations around the existing seasonal pond. Management Recommendations Remove non-native blackberries from patch [See Inva- 111 Plant Control— Himalayan Blackberry, pg. 22]. Remove forest and shrub thicket plants from patch and Replant area around base of observation deck with replant with native meadow species. [See Meadow II larger shrub thicket species such as Vine Maple,Ninebark, Enhancement Species, pg. 23] There is some Reed and Elderberry Remaining area can be Canarygrass found along the western edge of patch I replanted with general shrub thicket species. [See Shrub ME 1. The Canarygrass should be mowed twice a year II Thicket Enhancement Species, pg. 23] SEG Existing Conditionsand seeded with native meadow species [See Invasive Plant Control - Reed Canarygrass, pg. 22]. 11 Currently this patch is covered in blackberries, Reed Wetland Enhancement Zone Canarygrass, shrub thicket species, and meadow species. WE Existing Conditions II Management Recommendations This patch of open water wetland will reconnect the Remove non-native blackberries and Reed Canarygrass existing open water to the seasonal pond to the north. from patch. Blackberries should be removed according Raising of the height of the weir structure to flood Reed IIto techniques outlined in the Invasive Plant Control , Canarygrass will be included in the design and con- Section. The patch of Reed Canarygrass should be struction of the open water wetland. This expansion planted with alders and seeded with native meadow will increase the amount of valuable open water habitat species [See Meadow Enhancement Species, pg. 23], while eliminating a suitable growing environment for Regular mowing twice a year will allow the alders to Reed Canarygrass. IICity of Lake Oswego,Oregon _ CANAL AREA MASTER PLAN CO GreenWorks, P.C. I a S I I : Management Recommendations Management Recommendations 1. Grade area to connect existing delineated open Replant patch with native upland tree and shrub spe- water and seasonal pond while removing reed cies. Plantings along property line should be denser to .. Canarygrass. provide screening. Screen shrubs such as dogwood. [See 2. Construct Boardwalk along main pathway. Forest Enhancement Species, pg. 23] ... 3. Construct weir crossing and raise height of weir to FE5 - 11 increase depth of pond. FE7 Existing Conditions . 11 4. Plant with native riparian wetland species, Meadow plant species and blackberries dominate these Note: Expansion of the open water wedand will not patches of vegetation.There is little structural diversity include seasonal pond to the north of Bryant Woods found in these patches and they provide little screening . ,_...- 1 . ., • , . , Park where Red-legged frog egg masses were found of adjacent residences. Bryant Woods Park - during an inventory site visit. Management Recommendations Canal Acres Park Remove existing exotic blackberries and plant with native upland trees and shrubs. Plantings in these areas Vegetation enhancement in Canal Acres will include general will provide an increased amount of habitat, screening removal of invasive, non-native species such as English Ivy of adjacent residences, shading for wetland and visual 1 and Himalayan Blackberry and replanting of disturbed areas interest for visitors. [See Forest Enhancement Species, [See Invasive Plant Control, pg. 22]. Removal of Himalayan pg. 23] 1 Blackberry should be concentrated along the southern prop- FM F.risting. ,Qntl it' ias erty line of the park due to its large presence found in this area. Replanting in this area should consist of forest enhance- There is a very thin strip of riparian vegetation extend- ment species [See Forest Enhancement Species, pg. 23]. ing into the site from the top of the Tualatin River's bank. Beyond this, the patch is currently covered in River Run Park (East and West) meadow species and is maintained by yearly mowing. Forest Enhancement Zones Management Recommendations FE4 Existing Conditions Plant area with native upland and riparian forest species 111 The patch is currently covered with low meadow to restore connection from the park to the riparian forest. Removal of some exotic species such as blackber- species. Screening of the private residence adjacent to ries and hawthorns may be necessary in this area. [See 11 the property is necessary. Forest Enhancement section, pg. 23 and Invasive Plant Control, pg. 22] 1 8 CANAL,AREA MASTER PLAN _ City of Lake Oswego, Oregon GreenWorks,P.C. III II 11 11111 NIFE9 Existing Conditions Management Recommendations Because of the lack of woody vegetation in this patch, Vegetation patches should be planted with native scrub/ II the canal headgate and related structures can be seen from the park. Access to the headgate from the main shrub species. These plantings will increase the amount of valuable edge habitat found throughout the park. [See path is necessary for emergencies. Shrub Thicket Enhancement, pg. 23] IIIManagement Recommendations Meadow Enhancement Zones Planting in this area should consist of native riparian ME3 Existing Conditions - - 11 species. This proposed forest enhancement will extend the existing riparian forest while helping screen the This patch consists entirely of blackberries. Although the S: headgate and related structures. [See Forest Enhance- patch provides good habitat for wildlife, the exotic plant - �; will spread throughout the park if it isn't eliminated. `-, III ment Species, pg. 23] ••, Shrub Thicket Enhancement Zones Management Recommendations_ 11 Remove existing blackberries [See Invasive Plant Control, = ��: SE1QExisting Conditions pg. 22], Plant area with native meadow species to -- -�"l----^__ ,;�..-> This patch consists almost entirely of blackberries. increase meadow. [See Meadow Enhancement, pg. 231 -1111 - - __- _ Although thispatchprovidesgood habitat for wildlife, r �' g Wetland Enhancement Area ' —the exotic plant will continue to spread throughout the - -_ -s._ - --� - - -;` , . - . .�. - park if it isn't eliminated. WE2 Existing Conditions _� � =. - '�` 11 Management Reco emendations This area currently consists of two small designated Bryant Woods Park III Remove existing blackberries [See Invasive Plant Con- wetlands with meadow species between them. A storm trol, pg. 22]. Plant area with native shrub thicket sewer pipe runs underneath these wetlands and our to the species to restore natural vegetation and keep habitat Tualatin River. Connection and expansion of these 1111 value of vegetation patch. [See Shrub Thicket Enhance- wetlands will help increase wetland habitat, provide an educational area for the park, and treat stormwater runoff ment, pg. 23] from surrounding neighborhoods. 1111 SE7, 8, 9, 11, & 1.2 Management RecommendationsExisting Conditions I. Grade area to connect existing delineated wetlands. III Little edge habitat currently exists in the park. These 2. Construct boardwalk along main pathway. meadow patches are located in crucial transition areas 3. Construct water control structure for flood events. between the proposed forest enhancements and the II meadow. Proper planting of these areas is important for 4. Daylight storm drain and connect to wetlands. increasing the ecological diversity of the park. 5. Plant with native riparian wetland species. [See III Wetland Enhancement Species, pg. 23] City of Lake Oswego, Oregon _ CANAL AREA MASTER PLAN 19 GreenWorks, P.C. II i r . �.J l• r_ "..... -I „.., ,,?...,,t; - .F E Ell ,f' /' '' ).'‘.\,. A) T s E Hr: -4. -: ''''''''S'i-C:' ..;": 7 ,al."..:., •.' :, ,,___..., ! ..,i.A... .,: . _____________.........,) „ l•L_,,,,1 i i 1----Li . ....,.:rtil. : . ,..,.. :,„:..,,. ,.., . ,,n . : ____._........„----, r--1, .,, . „Li TI,� ii ' - -�a rn f 1 1,,,h., ,� • 91 fl F E i Y FIrl 1-1 -,........) In _ -.. . Is, \ ' Fri .- A i ciii1.`- T, 1 i i 1 r---). , , . . . 4 1,....._ „ ,,,,,., • .....,...._, / / ...,—, 4,‘,.4) r. .. . [1:-_,....] _ / / f-....., 1 ! // 1- -). r . 1 • .. _ wir r /41 ____. `, 1 i � � l ' J .L ) t r-^... ..J ,� L.J La.,....c.j (1. i [Li BRYANT WOODS , .K.:› �y�) PARK r. �' --..._____ .-----__-- i ___. _ L - ..i .... . „... ,:.-,._.,—.r.--,7'':7- _ . .._._ ----..---__ 17 i . r , , ..-.- tt ,,,. . -\\:. i ,.., ,, .. ..,. _. _ _ : _ ... L1111111111110 _, , 1 1-t j , ,. '1,,, ........0... _ .. . , . . . ... , ! \ .1 1 J, i Ili, CANAL ACRES "A, \ -, \ . II 14 1 .,. _. _. .... . .. . ) .I C.,"3 i . 4 : i r.17 . f_ i.( • L. f EXISTING VEGETATION ZONE LABEL Vegetation Type Existing Forest Canopy ."......:::...1 proposed Forest Enhancement FE Forma Enhancement Zone S E SE • Shrub Thicket Enhancement tone YAE•Shrub Thicket Enhancement Zone NORTH WE-Wetland Enhancement Zone . � Existing Shrub Thicket Proposed Shrub Thicket Enhancement i \\ Zone Riu+nbea-see i _ ram:native V2 Yoz muaagen erIt I Existing MearlawETE Proposed Meadow Enhancement prescription ` — a Ton aoB Proposed Open Water Wetland City of Lake Oswego, Oregon , .-. CANAL AREA OPEN SPACE ir.- .= ,, - ---. • -. . ,anini i'i ;"� Vegetatior>1 WIar-)age no'erit PIari . ir .. February 2000 gift 111.1 NMI MIgab Mil 41111 111.111 IIIIIIII IMO MI MI lab 11111111 1111111 MIN ME Mil Rib I L ilii. \\\\ \ 1—t. 1 0 1 D L i . 4 ..,.. : _. Li I • 1 n 3 r3 �_ is _.1 [7:) )c ) . - 1 'kJ EL ! Es.—Jci L...1 / 4-•-•Ln 1.--.........) 1.1 I F-1 Li J1-1-„ri f-- i I �-) ri3 , . . if j } I tr J 1;73 I /Th mm. mt•• I•nmy a.m...nroup s .1 (3 hi 13 [-ii i c- ........) I ___. c.......z) r ...) a.--. ) r-7 c_...,_, 0 / ..", 7 .1-1-I l'' '''''--"...1 I 1---1?. ['Li <,)," -;;1 Li ej Lit-r.1)._1 cj) 1.....i /7 1 )j E .7,.....„ ._____---- ------ .."\ _ i) ) tr--- i ....... (7:) �' .J "P``-) - FL-.11 _.21 FE i FE . WE soi ir*�J S E I � mil m lip , . F E ' r .�~ 5 E 1 E7 -'% 1 `'a, EAST 5E �+Ii'r -•. TUALATIN RIVER .�!- RIVER RON PARK HORTH 1 1 o - 'WI 20u EXISTING VEGETATION dON1E LABEL .---..- r-.- -. Vegetation Type • !Existing forest Canopy ..... _„1 proposed Forest Enhancement FE- Forest Enhancement None '_ 1 S E SE- Shrub ThIckalt Enha2ice neri2 zone -1 ME-Shrub Thir:rtut Enhancement Rune Existing Shrub Thicket �� Proposed Shrub ThicHet Enh:uuernerrc ILI \ U!!E-Wetland Enhancemaxrt Zane .���� `-Zuna Ni iinber-see Exulting riiendow I 5 PropasCd PlleadawEnhancenent nrieverivti e formanage+tien4 p p Proposed Open Water Wetland City of Lake Oswego, Oregon r � CANAL AREA OPEN SPACE -: .ate -. Xs". e g e t a t i in !VI a ri a g e nn e n t IP I al I-) IGREEI IAId�gik y - K' L, ;- February 2000 I I I I Invasive Plant Control These management techniques should be used in any patch, the ivy will eventually choke out the trees. This is the mainI 4 - identified or not, of non-native vegetation found in the park. problem area of the site. - -- Reed Canarygrass Management RecommendationsI ,,-_ 1. :-. .' ,"- r Ivyshould be cut at base of tree and removed from the lower 4.-_:- —7.i^--� Existing.Conditions four feet of the tree trunk. Eventually the ivy in the upper Much of the open meadows found in Bryant Woods Park are parts of the tree will die and fall off, or can be pulled off. dominated by Reed Canarygrass. This robust and competi- Removal of green ivy vines may damage the tree by pulling tive wetland plant has been outcompeting the native meadow bark or limbs off the tree. Care should be taken because grasses. cutting of some large vines may reduce support of vine and Management Recommend inns increase risk of the vine falling overtime. The best use of volunteer help would be to concentrate removal in a particu- Unfortunately, removal of Reed Canarygrass proves to be lar area since the area of infestation is so large. Working on a ., Canarygran difficult due to its rapid growth ability. Heavy equipment has smaller, and more manageable chunk of the ivy at a time will been used unsuccessfully in the removal of the grass.There is help in overall support and enthusiasm for the project. a rapid regrowth of the rhizomes and seeds left in the soil after removal. With the enlargement of the existing open water Himalayan Blackberry Removal wetland, some of the Canarygrass will be physically removed. Existing Conditions The disturbed areas will be inundated with water year round and therefore prevent regrowth of seeds and rhizomes. Many areas in the park have been identified as having Hima- layan Blackberry in them. Removal of the plant is essential toI It is recommended that the remaining Reed Canarygrass reestablish native species and reduce spreading of the invasive dominated areas be maintained by bag mowing twice yearly plant. Even though complete abatement of the blackberry is or a prescribed control burn and seeded with native meadow difficult, removal efforts should not be discouraged becauseI species [See Meadow Enhancement Species list]. The mowing the plant can provide good habitat for native wildlife. will remove the seed heads before they have a chance to mature and expose the ground to light, which will promote Management RecommendationsI growth of native species.The prescribed burn will cut the Volunteer groups can be used to physically remove the black- Reed Canarygrass to the ground and be more effective in berry patches. The plant should be cut back and then the I opening up the ground layer to light. Burning is a better roots dug out to completely remove plant. Disturbed area alternative, though much more controversial than mowing. should be replanted right away to prevent blackberries from English Ivy Removal competing with the native plants. The infested areas requireI frequent revisits to cut back new growth that quickly devel- Existing Conditions ops. Blackberries should be cut back approximately four I Many trees on the east and west sides of canal between Canal times during the growing season to prevent spreading and re- Rd. and the headgate are covered in English Ivy. If left alone, infestation. Once the larger patches of blackberry have been removed, regular maintenance of the areas should prevent eaCANAL AREA MASTER PLAN regrowth. City of Lake Oswego, Oregon GreenWorks, P.C. I II II U Plant List rRubus parviflorus Western Thimbleberry Forest Enhancement Species Sambucus racernosa Red Elderberry I Trees Symphoricarpus albusm Snowberry Acer macrophyllum Big Leaf Maple Vaccinum parvifoliu Red Huckleberry Alnus rubra Red Alder I Fraxinus latifolia Oregon Ash Meadow Enhancement Species Populous trichocarpa Black Cottonwood Pseudotsuga menziesii Douglas Fir Deschampsia caespitosa Tufted Hairgrass Salix lasiandra Pacific Willow Elymus Glasub ucus ata Blue Wildrye Salix scouleriana Scouter's Willow Festuca subulata Bearded Fescue Fragaria virginiana Wild Strawberry I Understory Acer circinatum Vine Maple Wetland Enhancement Species Berberis spp. Oregon Grape Wetland.Shrubs II Corylus cornuta Beaked Hazelnut Cornus stolonifera Red-osier Dogwood Holodiscus discolor Oceanspray Oemleria cerasiformis Indian Plum Pysocarpus capitatus Pacific Ninebark II Philadelphus lewisii Mockorange Rosa nutkana Nootka Rose Salix sitchensis Sitka Willow Physocarpus capitatus Pacific Ninebark Sambucus racemosa Red Elderberry II Rosa nutkana Nootka Rose Rubus parviflorus Western Thimbleberry Spiraea douglasii Douglas' Spiraea Sambucus racemosa Red Elderberry Perennial Wet Areas I Spiraea douglasii Douglas' Spiraea Glycerin el Symphoricarpus Mannagrass • . Symphoricarpus albus Snowberry Carex obnupta Slough Sedge Vaccinum parvifolium Red Huckleberry Juncus effuses Common Rush Juncus tennis Slender Rush `t Shrub 'Thicket Enhancement Species Scirpus microcarpus Small-fruited Bulrush ,} s Elochans aulustris Common S ikerush Amelanchier alnifolia Saskatoon Serviceberry P P p II Berberis spp. Oregon Grape Veronica americana American Speedwell '. `' Cornus stolonifera Red Osier Dogwood --4, %• - - Seasonally Wet Areas • , A • Holodiscus discolor Oceanspray Oemleria cerasiformis Indian Plum Carex densa Dense Sedge "�' Philadelphus lewisii Mockorange Carex deweyana Short-scale Sedge .' *_• = �.:�= Descharnpsia caespitosa Tufted Hairgrass Physocarpus capitatus Pacific Ninebark Mentha arvensis Field Mint Rosa nutkana Nootka Rose Veratrum californicum California False-hellebore ICity of Lake Oswego, Oregon CANAL AREA MASTER PLAN II GreenWorks, P.C. I I I iMPLEMENTAT ON PLAN 01 4? ..,� - , •• Introduction s • • = y The following is the Implementation Plan cost estimate. The ; . 6..1.14 '. �` - Implementation Plan is broken down into three phases. First �";-. is the Immediate Phase, which will happen during the 2000 ",: ,. ' fiscal ear. The second is Phase 1, which is slated to happen �r '. Y PP T.' , , in 2 to 3 years. The last, Phase 2, is planned to be built -# within 3-5 years. The costs for the phases were generated I ': : "t • assuming the contractor would install items listed. However, . : items denoted by a bullet (') indicate projects that can be done by volunteers under adequate supervision. - Immediate Implementation Phase I. Bryant Woods Park CSI Sec. ITEM QTY. UNIT UNIT COST EXT. COST REMARKS 02200 SITE PREPARATION&DEMOLITION • Clear and Grub for trails&revegetation 1600 SF $0.15 $240 +� 02300 EARTHWORK .. `- - _ Rough Grading for New Trails&Park Entry 7400 SF $0.25 $1,850 " • Finish Grading for all disturbed areas 7200 SF $0.30 $2,1 60 02700 PAVINGS Ecostone Unit Pavers in parking area 5600 SF $7.00 $39,200111 - Flagstone/Crushed Rock @ Park Entry 800 SF $5.00 $4,000 - s3- Crushed Rock Primary Trails(5'wide) 800 LF $15.00 $12,000 Ali A • •' A.C.transition at Parking Area Entry 200 SY $6.00 $1,200 t,_. _ 02800 SITE IMPROVEMENTS • - • Bulletin Board 1 EA $5,000.00 $5,000 Bryant Woods Park Park I.D.Sign I EA $2,500.00 $2,500 Stone Pilasters Portable Toilet Enclosure ALLOW $1,500.00 $1,500 Bollards 3 EA $250.00 $750 Picnic Tables 3 EA $750.00 $2,250 Trash Receptacles 2 EA $300.00 $600 Benches 1 EA $400-00 $400 02900 PLANTING II • Shrub Thicket Habitat Planting Enhancement 500 SF $0.40 $200 Seed&container plants • Forest Habitat Planting Enhancement 2000 SF $0.50 $1,000 Trees&container plants • I 1111 24 CANAL AREA MASTER PLAN City of Lake Oswego, Oregon GreenWorks, P.C. I I I II. Canal Area 02800 SITE IMPROVEMENTS Secondary Entry Sign 1 EA $1,500.00 $1,500 III. River Run 02800 SITE IMPROVEMENTS Park I.B.Sign 1 EA $2,500.00 $2,500 Stone Pilasters 1 1! Y Subtotal .�a...�_ �. $78,850 Design Contingency(7%) $5,519.50 Estimated Base Construction Cost $84,370 - _'�. sue.` .. , Soft Costs-Design,Engineering& Permitting) (20%) $16,873.90 "'�y'Woods Bryant Park G.C. General Conditions, Bonds and Insurance(12%) $10,124.34 G.C.Overhead and Profit(7%) $5,905.87 Total Construction Cost $117,274 Notes 1.Assumed that 50%of trails will utilize existing trail alignment. Phase 1 I. Bryant Woods Park CSI Sec. ITE1wf QTY (IIdIT UNIT COST XT. COST REMARKS 02200 SITE PREPARATION&DEMOLITION • Clear and Grub for trails&revegetation 58400 SF $0.15 $8,760 Utility Relocation Underground 1600 LE $7.50 $12,000 Misc.Site Demo ALLOW $I,000.00 $1,000 02300 EARTHWORK Grading for expanded Open Water Wetland 2700 CY $6.00 $16,200 Avg. 3'deep,spoil on siteRough Grading for New Trails,Rest Spots&PI 6400 SF $0.25 $I,600 Finish Grading for all disturbed areas 300 SF $0.30 $90 02600 DRAINAGE Culvert Crossings under trails 10 FA $150.00 $1,500 02700 PAVINGS Flagstone/Crushed Rock @ plazas 2400 SF $5.00 $12,000 I • Crushed Rock Primary Trails(5'wide) 2200 LF $15.00 $33,000 Crushed Rock SecondaryTrails(3'wide) 1845 LF $11.00 $20,295 • Boardwalk Trail(5'wide) 150 LE $150.00 S22,500 City of Lake Oswego,Oregon CANAL AREA MASTER PLAN Eal GreenWorks, P.C. I I I 1 1 i ::_.' 02800 SITE IMPROVEMENTS ' ' Secondary Entry Sign 1 EA $1,500.00 $1,500 =p : Stone Site Walls-30" high 138 LF $200.00 $27,600 Wildlife Observation Deck 1 ALLOW $25,000.00 $25,000 Includes stone base&paving • Interpretive Exhibits,Signs, Displays 1 ALLOW $10,000.00 $10,000 Trash Receptacles 1 EA $300.00 $300 Benches 2 EA $400.00 $800 Wier Structure ALLOW $10,000.00 $10,000 02900 PLANTING • Nuisance Plant Removal ALLOW $1,500 • Meadow Habitat Planting Enhancement 9700 SF $0.25 $2,425 Seed&propagules • Shrub Thicket Habitat Planting Enhancement 7900 SP $0.40 $3,160 Seed&container plants • Forest Habitat Planting Enhancement 28000 SF $0.50 $14,000 Trees&container plants II. Canal Acres 02300 EARTHWORK Rough Grading for New Trails 5000 SF $0.25 $1,250 02700 PAVINGS Crushed Rock Primary Trails(5'wide) 1000 LP $20.00 $20,000 Bryant Woods Park III. River Run 02800 SITE IMPROVEMENTS Pedestrian Bridge 1 EA $80,000.00 $80,000 111 Property Line Fencing(encroachments) 1000 LF $8.00 $8,000 black chain link 5'high 02900 PLANTING Encroachment Plantings(1200 If x 15'avg.wi 15000 SF $1.50 $22,500 incl.demo existing Subtotal $356,980 Design Contingency(7%) $24,988.60 Estimated Base Construction Con $381,969 Inflation to Project Start(5%per yr.x 2yrs.=10%) $2,498.86 Soft Costs- Design, Engineering&Permitting) (2096) $76,393.72 G.C. General Conditions, Bonds and Insurance(12%) $45,836.23 G.C. Overhead and Profit(7%) $26,737.80 Total Construction Cost $533,435 Notes 1.Assumed that 50%of trails will utilize existing trail alignment. 2 6 CANAL AREA MASTER PLAN City of I ake Oswego,Oregon GreenWorks, RC. t U I I U , Phase 2 III. Canal Acres CSI Sec. ITEM QTY UNIT UNIT COST _OCT COST REMARKS _i;,; 111 02200 SITE PREPARATION&DEMOLITION ; •Clear and Grub for traits&revegetation 12200 SF $0.15 $1,830 �.. . Misc.Site Demo ALLOW $500.00 $500 .-r • `III 02300 EARTHWORK • a. Si. � Rough Grading for New Trails 7000 SF $0.25 $L,750 .j - . I 02600 DRAINAGE -IICuiverr Crossings under trails 5 EA $150.00 $750 :� 02700 PAVINGS Crushed Rock SecondaryTrails(3'wide) 2400 LF $11.00 $26,400 Interpretive Exhibits,Signs, Displays ALLOW $2,500.00 $2,500 II Trash Receptacles 1 EA $3DD.00 $300 02900 PLANTING •Nuisance Plant Removal ALLOW $750.00 $750 II • Forest Habitat Planting Enhancement 6000 SF $0.50 $3,000 II. River Run Park(West and East Parcels) 02200 SITE PREPARATION&DEMOLITION w` • •Clear and Grub for trails&revegetation 60000 SF $0.15 $9,000 i 4 . II Misc.Site Demo ALLOW $500.00 $500 Bryant Woods Park 1 II 02300 EARTHWORK Grading for expanded Open Water Wetland 3500 CY $6.00 $21,000 Avg. 3'deep,spoil on site Rough Grading for New Trails,Rest Spots&Pla 12000 SF $0.25 $3,000 I Finish Grading for all disturbed areas 4000 SF $0.30 $1,200 02600 DRAINAGE Culvert Crossings under trails 5 EA $150.00 $750 11 02700 PAVINGS Ecostone Unit Pavers in parking area 2000 SF $7.00 $14,000 Flagstone/Crushed Rock @plazas 1200 SF $5.00 $6,000 Crushed Rock Primary Trails(5'wide) 1700 LF $20.00 $34,000 II Crushed Rock Secondary Trails(3'wide) 1650 LF $12.00 $19,800 •Boardwalk Trail(5'wide) 100 LF $150AD $15,000 A.C.Parking Access Drive 240 SY $6.00 $1,440 III 02800 SITE IMPROVEMENTS • Bulletin Board 1 EA $5,000.00 $5,000 River Overlook ALLOW $15,000.00 $15,000 I Bollards 3 EA $7,500 $250.00 $750 Interpretive Exhibits,Signs,Displays ALLOW .00 $7,500 ICity of Lake Oswego,Oregon _ CANAL AREA MASTER PLAN Eli GreenWorks, P.C. I I I _ . ,I. .t I Trash Receptacles I EA $300.00 $300 - Benches 1 EA $400.00 $400 Wetland Control Structure&Pipe ALLOW $5,000.00 S5,000 02900 PLANTING • • Nuisance Plant Removal 10000 SF $0.15 $1,500 - .• • Meadow Habitat Planting Enhancement 10000 SF $0.25 $2,500 Seed&propagulcs ' • Shrub Thicket Habitat Planting Enhancement 8500 SF $0.40 $3,400 Seed&container plants .. - i , • Forest Habitat Planting Enhancement 40000 SF $0.50 $20,000 Trees&container plants I Subtotal $224,820 Design Contingency(7%) $15,737.40 Estimated Base Construction Cost $240,557 Bryant Woods Park Inflation to Project Starr(5% per yrx 2yrs.=10%) $22,482 Soft Costs-Design,Engineering&Permitting) (20%) $48,111 G.C. General Conditions, Bonds and Insurance(12%) $28,867 G.C. Overhead and Profit(7%) $16,839 Total Construction Cost $356,857 I I I I I I 2 8 CANAL AREA MASTER PLAN City of Lake Oswego, Oregon GreenWorks, P.C.