Learn about water levels on Summit Lake by reading the files below.
| slca_water_level_overview_memo_updated_2024_final.pdf |
The most recent document covering lake level management is below. It is a letter from the Department of Ecology to SLCA, dated Dec 13, 2023.
| summitlake_level-control_stateecologyletter_dec2023.pdf |
SLCA, through authority granted the association by the Washington State Department of Ecology, maintains and operates the Summit Lake dam. As part of that activity, we publish an annual report to the Department of Ecology. See below.
| slca_annual_water_level_report_to_dept_of_ecology_2025_v1.pdf |
| slca_annual_water_level_report_to_dept_of_ecology_2024_v1.pdf |
| slca_annual_water_level_report_to_dept_of_ecology_2023.pdf |
SLCA also reports lake level information and activity to its members. Here is a report showing the type of work done by the SLCA Watermaster
| lakelevelreport2023v1.pdf |
There is a Citizen Scientist group tracking lake levels across the nation. Summit Lake is in the program through Thurston County Water Planning and the University of Washington. More info can be found here:
https://www.locss.org/gauge/summit-lake
Additionally, here are two historical documents that set the process in motion:
https://www.locss.org/gauge/summit-lake
Additionally, here are two historical documents that set the process in motion:
| summitlake1976ecologyletter.pdf |
| summitlakelevel_1954courtorder28006.tiff |