- 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.
- The watershed map on this web page labels the area around Meadowbrook Pond as the Meadowbrook Pond Natural Area. This name is not listed on OSM, Google, or the Seattle website.