- The Watershed | All about the Thornton Creek Watershed (thorntoncreekalliance.info)
Thornton Creek drains a 7,402-acre (11.6 sq. mile) urban watershed in northwestern King County. The Thornton Creek watershed extends roughly between Puget Sound and Lake Washington, extending from NE 190th St. in the City of Shoreline to NE 80th St in the City of Seattle. Thornton Creek enters Lake Washington at Matthews Beach Park, and Lake Washington drains by way of the Lake Washington Ship Canal to Puget Sound.
- This page is specific to the main creek after the confluence of the north and south forks. Note that many online sources do not distinguish between the forks and the main trunk.
- Thornton Creek (Wikipedia)
Thornton Creek is 18 miles (29 km) of urban creeks and tributaries from southeast Shoreline through northeast Seattle to Lake Washington. Its 12-square-mile (31 km2) watershed, the largest in Seattle, exhibits relatively dense biodiversity for an urban setting; it is home to frogs, newts, ducks, herons, and beavers, in addition to more than 75,000 people. From west of Jackson Park Golf Course in Shoreline, from Sunny Walter-Pillings Pond in Licton Springs–North College Park, and north Northgate Thornton Creek flows through Maple Leaf and Lake City, including the Victory Heights, Meadowbrook, and Matthews Beach neighborhoods, and empties into the lake at Matthews Beach Park.
