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Storm Water Management

Stormwater Management

Snohomish Conservation District has a program to help you manage stormwater on your property. Whether it's adding a rain garden or rain barrel, investigating permeable paving, or using a bioswale to channel storm water and filter pollutants, we can help you. 

The District currently has three staff working in Stormwater management. Kate Riley is a certified landscape professional with degrees in civil and environmental engineering. She is LEED certified and has experience with landscape design and municipal stormwater.

Derek Hann is the Engineer who works with residents on rain water collection, rain gardens and storm water issues. Derek has worked in the private development sector for four years, focusing on Low Impact Development projects. He has created multiple plans for rain gardens, pervious pavement roadways, bio-infiltration swales, filter strips, and constructed wetlands.

Ryan Leigh coordinates the rain barrel program, work with HOA’s, rain garden installations, and urban/residential issues. Ryan is a registered Landscape Architect who works on projects ranging from residential storm water improvements to programs targeting Low Impact Development.

To learn more about our storm water program ~

Contact Kate Riley at Kate at or Derek Hann at Derek at or Ryan Leigh at

The District has many partners in our efforts to protect Puget Sound using LID. Many cities, including Everett, Mill Creek, Snohomish and Edmonds have taken advantage of the services the District provides. We are also working with Stewardship Partners to help in their effort to construct 12,000 raingardens in Puget Sound. Check out their link:



Rob H Garden

A newly installed rain garden


Snohomish Conservation District has several great new videos on making your own rain barrel, cisterns, and more!
Our new YouTube channel can be found here:

Rain Water Collection Cistern Examples in Puget Sound
How to Build: A Rain Barrel
How to Build: Multi-Barrel Rain Water Collection System


Video on Seattelites constructing rain gardens

to help curb pollution


Building a Rain Garden in the Pacific Northwest (video)


Alternatives to Rain Gardens

DOE Policy on Collecting Rainwater

A KTCS video with Curtis Hinman


Photos on Picassa

from a recent tour - shared by

Philomena Kedziorski, WSU Master Gardener and Rain Garden Program Lead

(Note from SCD's LID Specialist on the rain garden taking runoff from the street. "We do not typically recommend private landowners take on runoff from the roadway to be managed on their private property. As changes occur in the watershed upstream of that area, the volumes could increase and end up routing more water to their yard than the rain garden is designed for and cause problems. It is a great service to the city, but not the landowners responsibility to manage that water".)

Low Impact Development Resources

Rain Garden Poster

Get one free when we come out for an assessment of your property!

Rain Garden Poster

Living Responsibly in Your Community - Homeowner's Guide to Protecting Our Water Resources   Download Homeowner's Manual (PDF)  

Local LID Resources List - Local businesses and contacts for finding plants, soil and compost for your rain garden, someone to design your project or mix and pour pervious concrete...and much more.  Download PDF

Rain Water Collection Fact Sheet - what you need to do to calculate the size and number of rain barrels you will need. Also includes local resources for rain barrels.

Rain water collection fact sheet

Rainwater Collection Brochure for Island County Residents Download (PDF)

LID Technical Guidance Manual for Puget Sound  Download LID Manual (PDF) 

VIDEO - Stormwater Management: One Backyard at a Time, featuring Whidbey Island examples!  Watch it here (skip ahead to 35 minutes to see the Whidbey Island segment).

LID Web Resources

USDA Hardiness Map -  


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