The City works with property owners to ensure routine inspection and maintenance of all private stormwater systems. Proper maintenance ensures the system continues to function as designed. It also helps keep our creeks and lakes clean, and helps prevent flooding and erosion.
Use this interactive map to find private stormwater systems on your property and information on how to maintain them.
Typical stormwater systems have many parts to carry runoff from your property. These parts may include:
Retention and detention facilities prevent flooding and reduce pollution by storing stormwater in ponds or underground vaults. These facilities slow the rate of runoff and also allow pollution to settle out before the water enters our creeks and lakes.
Inspection of private stormwater systems occurs at least every other year:
The City notifies property owners by letter when it is time for their next inspection.
The City inspects the drainage system and works with the property owner to familiarize them with their system and how to maintain it.
Staff will notify the property owner if a system does not meet Kirkland’s maintenance standards. Upon notification, the property owner will be responsible for completing the necessary maintenance.
Maintenance requirements for stormwater facilities are in Appendix A of the 2021 King County Surface Water Design Manual. Typical stormwater system maintenance requirements might include:
Prevent materials stored outside from leaking, draining, spilling or dumping into the stormwater system. Keeping contaminants out of your system reduces disposal costs for materials cleaned from the system.
The City provides a list of local firms that provide drainage maintenance services: Drainage Maintenance Contractor List(PDF, 135KB).
For non-emergency drainage or stormwater concerns, visit Our Kirkland
Address
Public Works - City Hall
123 5th Ave
Kirkland, WA 98033
425-587-3800
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