COVID-19 Freeze for Multnomah County

The four-week (minimum) freeze is in effect through December 16th.

Environmental Services is migrating information to portland.gov

Environmental Services is moving content to the new City of Portland website portland.gov. To access content not yet migrated, visit portlandoregon.gov/bes

Calculate Your Clean Rivers Rewards Stormwater Discount

Use a discount calculator to see how your savings will increase with each step you take to let stormwater runoff from your roof, driveway, or parking lot safely soak into the ground on your property.

Online

Choose Appropriate Calculator

Residential

If you have a single family or duplex property, use the residential calculator.

Calculate residential discount

Commercial

If you have a multi-family (three or more units), commercial, industrial, or institutional property, use the commercial calculator (MS Excel required).

Stormwater Discount Commercial Calculator (96 KB)