Clark County piloted the Downspout Disconnect Program in 2017 to offer homeowners reimbursements and technical assistance to disconnect their downspouts. The program no longer offers reimbursements or technical assistance. Resources below provide guidance to those interested in disconnecting downspouts.
Why disconnect downspouts?
Restore the natural path of rainwater - Many of Clark County urban unincorporated neighborhoods that were built between the late 1960's and 2000 have downspouts that are connected to underground pipes. Some of these pipes discharge to streets at the curb while others connect to pipes and flow downstream to our local waterways.
Several of these neighborhoods have no stormwater facilities to slow the water entering streams during rain events or remove pollution. This is a problem for our local creeks and streams, resulting in lots of water, possible erosion and increased pollution.
Here is a solution!
Make your home GREEN - Disconnecting downspouts and discharging rainwater to a lawn or landscape area allows water to seep into the ground while removing pollutants and recharging the groundwater.
The program targets neighborhoods in urban unincorporated Clark County (not the cities) that have been identified as high priority for pollution. The program will provide technical assistance to homeowners to find a solution that works for their property.
Learn more about the program
- Step 1 - review the Downspout Disconnect program overview and Downspout Disconnect "How to Disconnect" instructions
- Step 2 - Ready to go? Let us help you get started. Fill out the application and we can schedule a site visit (email or call) to your home to help review your property and if disconnecting is right for your home.
- Step 3 - When we visit your home, you'll get a Downspout Disconnect technical assistance form to help shape your project.
- Step 4 - If the project will work on your site, we'll get you a Project Agreement form and you can get started!
Design and development resources:
The Clark County Stormwater Manual 2015 Errata 2016 has a series of information that may be helpful to homeowners in developing designs for their properties. The full manual can be found at this webpage.
- Link to WSU Extension for rain barrel and rain garden information - WSU Extension has a limited supply of rain barrels for sale ($15+tax) that need assembly. Contact Annette at 360.397.5709 to learn more.
- BMP T5.10A Drywell
- BMP T5.10B Infiltration Trench
- BMP T5.10C Downspout Dispersion
- BMP T5.10D Perforated Stubout
- BMP T5.14A Rain Garden
- Rain Garden Handbook for Western Washington
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Staff can be reached at:
Clark County Clean Water program - 564.397.4345 - Ask for Eric.
This pilot program was developed through a grant from the Lower Columbia Fish Recovery Board.
Downspout Disconnect Program video