Catch Basins/Drain Inlets

During the leafy season in the Fall, catch basins can become plugged. The City works hard to ensure the basins are cleared and allow stormwater runoff to flow into the catch basins. City Code prohibits placing leaves from private property onto the right-of-way, which can contribute to plugged catch basins.
Citizens can assist the City by raking leaves and debris away from the catch basins. Stand on the curb or private property side of the catch basin and use a fork or rake to clear leaves, limbs, and debris from the catch basin. Do not attempt to remove the grate, only the debris on top of the grate.

What is a catch basin/drain inlet?

It is a structure that is designed to drain excess rain and ground water from paved streets, parking lots, sidewalks, and roofs.

How many are there?

The City of Lake Oswego owns and maintains 9,898 catch basins.

When are they cleaned?

Catch basins are typically cleaned on a yearly basis. Along with an aggressive street sweeping program, catch basins help prevent street debris from entering the stormwater system, creeks, lakes, and rivers.

Why are they important?

These structures carry excess water away from impervious surfaces (roads, sidewalks, parking lots, etc.) to prevent flooding. Some catch basins may also contain filtering devices that can help improve water quality.

What services does the City provide and who maintains?

Public Works maintenance unplugs clogged catch basins/drain inlets and repairs any damaged stormwater structures.

Have a Question?

If you have questions about catch basins in your area, please call Public Works Maintenance at (503) 635-0280.