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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

Residential Discount Calculator

Locations where stormwater flows when it drains from your roof areas

Check all of the locations where stormwater flows when it drains from your roof areas. Check all of the conditions that apply at your property—your roof runoff may be going to more than one place.

Check this if some or any of your downspouts have roof runoff that leaves your property. This includes downspouts that lead to your driveway and then off of your property, as well as drains that go directly to a street, sewer, drainage ditch, stream, river or other area off of your property.

Other kinds of on-site stormwater management on your property

Check all of the following conditions that apply to your property.

This does not include trees in the landscaped parking strip or public-right-of-way.

Monthly Stormwater Management Charges
Stormwater Discount

This section shows how your discount will be applied to your utility bill. The discount is pro-rated on a quarterly basis depending on the length of your utility billing cycle.


If you have questions about how to register or how the discount is calculated, please call (503) 823-1371.