Stormwater Management Program

Stormwater & NPDES

Stormwater runoff happens when rain or snow melt flows off impervious surfaces such as roofs, driveways, sidewalks, and streets which prevent the water from naturally soaking into the ground.

Stormwater flowing across hard surfaces may pick up pollutants along the wayStormwater Outfall such as oil, fertilizer, chemicals, dirt, litter, and other debris. When runoff becomes polluted, it can harm the environment by flowing into Monroe’s surface water collection system. These waters eventually flow into our streams, lakes, wetlands, and the Skykomish River.

The Department of Ecology’s Stormwater Management Manual for Western Washington has been adopted for reference by the Monroe City Council. The city is required by federal law to maintain an discharge permit, known as the National Pollutant Discharge Elimination System (NDPES) Phase II Municipal Stormwater General Permit (stormwater permit). Collectively, these documents provide the required foundation for the majority of the city’s stormwater management program.

The NPDES stormwater permit requires the city to post select documents for public review and comment. Below, you will find links to the city’s annual stormwater report, the current stormwater management program plan, and the quality assurance project plan.

Annual Stormwater Management Plan

The Stormwater Management Program (SWMP) is a set of actions and activities performed each by the city to comply with Section S5 of Monroe's NPDES stormwater permit. The SWMP is provided as a means to inform the public of planned activities for the upcoming calendar year..  The city welcomes public comment on the Stormwater Management Plan (PDF) throughout the year. If you have comments regarding the current SWMP or ideas to be included in future plans, please email the city's stormwater group.

Chinook Salmon Opens in new window

NPDES Document Links

Stormwater Management Program Plan (PDF)

Storm water Annual-Report (PDF)

Quality Assurance Project Plan (PDF)

Stormwater Contact Information

Please report clogged storm drains or spills to the city of Monroe at 360-794-7400 during normal business hours or anytime at through Monroe Listens. Spills can also be reported 24 hours-a-day/7 days-a-week to the Department of Ecology at  425-649-7000.

Report illegal dumping or spills that are potentially life threatening or hazardous to the environment by calling 9-1-1.