Name: Lake Sammamish water-level time series
Creator: Lakebrief

Question 1

What is the current water level at Lake Sammamish?

Accepted Answer

Lake Sammamish's current water level is shown at the top of this page, sourced from USGS gauge 12122000 and updated continuously. The 7-day trend, full-pool comparison, and a multi-year history chart are all on this page.

Question 2

What is the full pool elevation for Lake Sammamish?

Accepted Answer

Lake Sammamish has a full pool elevation of 27 ft (NGVD29). Surface area at full pool is 4,897 acres.

Question 3

How is Lake Sammamish's water level measured?

Accepted Answer

Water-surface elevation for Lake Sammamish is measured by USGS gauge 12122000. Lakebrief polls the upstream feed continuously and renders the latest reading, recent trend, and multi-year context.

Question 4

What is the historical low water level for Lake Sammamish?

Accepted Answer

The lowest recorded modern elevation for Lake Sammamish is approximately 25.47 ft. The low-water advisory threshold for the dashboard is 25.6 ft.

Lake Sammamish water level