Your Watershed
About TCA
Join TCA
Make a Donation
Help TCA with a financial gift
We are a group of dedicated volunteers who are working to preserve and protect our urban watershed. We work on multiple fronts: habitat restoration, issue advocacy, and education and outreach. Your support is welcome and would be gratefully accepted. We’re a 501(c)(3) nonprofit organization; your donation is tax-deductible to the extent allowed by law.
Become a Community Scientist
Learn how to help your community
Members and volunteers monitor pollutants and collect data at a variety of locations along the creek. Using this information, we partner with Seattle Public Utilities to pinpoint pollution sources and improve the water quality for everyone. Join this innovative program to keep Thornton Creek and it residents thriving in their urban setting.
Our recent projects
No Results Found
The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.
Thornton Creek Hotlines — to report issues, CALL:
Pollution Spills & Waterway Problems
City of Shoreline 24/7: 206-801-2700
WA Dept. of Ecology: 800-258-5990 –or- 425-649-7000
Illegal Dumping
Shoreline 24/7: 206-801-2700
Erosion
Shoreline 24/7: 206-801-2700
Fish & Wildlife
WA Dept. Fish & Wildlife: 425-775-1311
Illegal Tree Cutting
On private property:
Seattle Code Compliance Division of Department of Construction and Inspections: (206) 615-0808
Shoreline Planning & Community Development Department: (206) 801-2500
On public street/city right-of-way:
Seattle Department of Transportation: (206) 684-8733
Shoreline Customer Response Team Code Enforcement: (206) 801-2260
On Parks property:
Seattle Parks Department: (206) 684-4113
Shoreline Customer Response Team Code Enforcement: (206) 801-2260
What you can do
Salmon-friendly gardening
Create a pesticide free zone in your yard and garden.
The abundant rain we get washes chemicals and pesticides into the creek, and eventually into Puget Sound. Control invasive plant species such as blackberry, ivy and laurel. Check out our resources for going organic and natural in your yard.
Wash your car … at a car wash!
When you wash your car on a paved surface such as your driveway, street or parking space, the contaminated water (even if you use biodegradable soap) goes right into the storm drains and can harm fish, other aquatic life and animals. The best option is a commercial car wash since the water goes through the sewer system, and many car washes reuse the water several times.
Recent News
Upcoming Events
First Steps Toward a Natural Area at Willow Creek
Responding to advocacy from Thornton Creek Alliance, the Seattle Parks and Recreation Department is seeking funds to acquire the pieces for a new, two-acre natural area along Willow Creek, just north and east of the Shanty Tavern, at 9002 Lake City Way NE. In March,...
Development at Patty’s Eggnest in Northgate
TCA has a Land Use Committee open to membership that reviews plans for urban development in our watershed. We support density in our neighborhoods, and we encourage close community review of construction permitting and design documents to understand the environmental...
Unsanctioned Camping at Lake City Floodplain Park Site
Neighbors and advocates for the unhoused have reached out to TCA about the camping at 2318 NE 125th St, the site of the Lake City Floodplain Park currently under development. In response, we would like to make clear that our position is to support city and county...
Thornton Creek Alliance Public Meeting: October 28th, 2021
Habitat Restoration: The Change Starts at Home
- There are no upcoming events.
- There are no upcoming events.
Calendar of Events
S Sun
M Mon
T Tue
W Wed
T Thu
F Fri
S Sat
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
0 events,
- There are no upcoming events.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
- There are no events on this day.
Year Alliance Formed
Anniversary
Members & Growing
Events per Year
New members are always welcome!
The larger the group, the greater the voice for a healthier watershed.