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Find comprehensive services, data and information related to lakes in King County, Washington.

To offer a suggestion or report an error on the King County lakes website, please contact Fred Bentler, webmaster.

King County, Washington lakes

Lake Sammamish information
King County, Washington

Lake Sammamish story
Overview describing Lake Sammamish, its problems with phosphorus pollution and factors affecting water quality in the lake.

Lake Sammamish kokanee
Describes the dwindling population of genetically distinct kokanee in Lake Sammamish and actions that King County and other agencies are doing to protect and restore them.

Sammamish kokanee video, fall 2011
In this video, kokanee salmon return to Laughing Jacobs Creek in large numbers.

Kokanee and chinook restoration projects in the Sammamish Watershed
List of projects scoped for fast-action and to benefit kokanee and chinook salmon populations in Lake Sammamish tributaries (2011).

Lake Sammamish monitoring
Overview of the lake including water quality graphs and data, and general metrics and statistics characterizing Lake Sammamish.

Report: Development of a Three-Dimensional Hydrodynamic Model of Lake Sammamish
Description of a mathematical model of Lake Sammamish developed to support affects of future land use and climate change possibilities on hydrology and water quality, and the resulting impacts on aquatic life.

The Factors Associated with Cyanobacterial Toxin Production in Lake Sammamish During the Summers of 1997 and 1999
An overview of Lake Sammamish water quality issues with graphs of water quality data from several sampling locations on the lake, spanning several years during the 1990's.

Greening your Shoreline
A tool for lakeshore property owners on Lake Washington and Lake Sammamish to improve shorelines for people and salmon.

Map of Lake Sammamish Watershed

East Lake Sammamish Trail
Non-motorized transportation corridor and multi-use recreational trail along 11 miles of the former Burlington Northern Santa Fe railroad corridor on the east side of Lake Sammamish.

For questions about lakes in King County, please contact Sally Abella, senior engineer, Lake Stewardship Program.

Related information

Related agencies

News and announcements

Jan. 4, 2012
External article, Sammamish Review
Sammamish Landing waterfront park to open in spring

Jan. 3, 2012
External article, Issaquah Press 
Save Lake Sammamish founder Joanna Buehler departs
Issaquah trailblazer led efforts to protect lake from threats for decades

Nov. 21, 2011
External report, King5 News video
Sammamish Kokanee make surprising run

Nov. 7, 2011
King County officially opens Redmond stretch of East Lake Sammamish Trail

Oct. 3, 2011
King County and partners dismayed by feds’ decision to not protect Sammamish kokanee

Aug. 3, 2011
External article, Sammamish Review
Residents’ volunteer efforts protect Sammamish’s lakes

July 26, 2011 
External article, Issaquah Press
Endangered decision is due soon for Lake Sammamish kokanee

April 19, 2011
External report, KING 5 News video
Kokanee salmon released in creeks near Lake Samammish

April 18, 2011
Release of Lake Sammamish kokanee marks another year of group’s work to restore stock
King County, state, federal and local agencies, plus volunteers, work to restore kokanee through supplementation, habitat protection

Mar. 30, 2011
King County responds to community concerns of high water along Lake Sammamish

Jan. 18, 2011
External article, Issaquah Press
Effort to preserve dwindling species is a team effort

Dec. 20, 2010
Sammamish kokanee recovery continues as King County, partners work to build fish runs
Hatchery program, habitat protection and restoration key to weak stock’s recovery

Nov. 30, 2010
Executive signs updated shoreline protections for rivers, lakes and Puget Sound

Oct. 13, 2010
‘Workers ahead’ on Sammamish Trail during 3-month sewer repair project
Pipe relining will increase system reliability, prevent overflows

Sept. 14, 2010
Hundreds celebrate partnership for new rowing boathouse at King County’s Marymoor Park

Sept. 10, 2010
King County, Sammamish Rowing Association celebrate partnership, Marymoor boathouse

Aug. 13, 2010
Warm, dry weather: The perfect time for a trip to the lake…and stinky lake algae?

July 30, 2010
Be Responsible With Summer Fun on the Water

Summertime algae blooms!

July 22, 2010
Vandals damage Lake Sammamish data buoy
Replacement cost could reach $60K; King County seeks party responsible