Cottage Lake is a 63-acre lake located about four miles east of the city of Woodinville. A county park is located on the north shore of the lake. The watershed encompasses approximately 4,300 acres in the upper Bear Creek Basin of northeastern King County and southern Snohomish County. Based upon "historical" water quality data, Cottage Lake has been characterized as biologically highly productive since the early 1970's and to experiences frequent and intense algal blooms in the spring and fall.
Watershed area: 4275 acres
Lake surface area: 63 acres
Mean depth: 15 feet
Cottage Lake is a census-designated place (CDP) in King County, Washington, United States. The population was 22,494 at the 2010 census. The lake itself falls within the 98072 zip code, while the developments east of the lake fall under the 98077 zip code.
Based on per capita income, Cottage Lake ranks 13th of 522 areas in the state of Washington to be ranked. Cottage Lake was ranked #1 in 2013 for the fastest growing suburb in America.
Cottage Lake Park is located near Woodinville and offers numerous outdoor activities for the community to enjoy. Lake access allows for boating and fishing, and there are walking trails, picnic tables and barbeques, a picnic shelter, play area and restroom. The park is also home to the annual “Music in the Park” free outdoor summer community concerts, sponsored by the Upper Bear Creek Community Council.