Mud Mountain Lake water level
About the same as a year ago (0%)
Source: waterdata.usgs.gov/monitoring-location/USGS-12098000, accessed October 1, 2026. Updated every 6 hours.
Mud Mountain Lake is at 0% of full pool as of September 29, 2026. Mud Mountain Lake is near Buckley, Washington.
Mud Mountain Lake level history
This site counts a reservoir as full on a day its storage is at or above 95% of the dam's normal storage (National Inventory of Dams). Many reservoirs rarely reach 100%, even in wet years, because operators release water for irrigation, power or flood control before they fill, so this site treats 95% as full. Highs and lows are daily readings in the published data, not official records. Source: USGS daily data.
Storage, % of full pool, since 1982
Mud Mountain Lake has held roughly steady since the previous reading (September 27, 2026).
On this same date last year (September 28, 2025), Mud Mountain Lake was 0% full, about the same as today's reading.
Weekly averages of the source's daily readings; older years may be monthly or sparser where that is all the source published. Download the charted data (JSON).
Mud Mountain Lake map
Mud Mountain Lake is at 47.1407, -121.9312. Open in OpenStreetMap.
The dam
- Flood control
- Recreation
Sources: nid.sec.usace.army.mil, accessed September 29, 2026
On the water
No campgrounds, boat ramps, or swim spots linked to Mud Mountain Lake yet.
Common questions
- Mud Mountain Lake is at 0% of full pool as of September 29, 2026.
- Mud Mountain Lake has not been full in the data: its storage never reached 95% of normal storage. This site counts a reservoir as full on a day its storage is at or above 95% of the dam's normal storage (National Inventory of Dams). Many reservoirs rarely reach 100%, even in wet years, because operators release water for irrigation, power or flood control before they fill, so this site treats 95% as full. Based on USGS daily data since October 1, 1982.
- In USGS daily data since October 1, 1982, Mud Mountain Lake's highest storage was 83.7% of normal storage on February 10, 1996. Its lowest since October 1, 1982 was 0% of normal storage on March 20, 1983. These are the highest and lowest daily readings in the published data, not official records.
- Mud Mountain Lake is near Buckley, Washington (47.1407, -121.9312).
- US Army Corps of Engineers operates the dam at Mud Mountain Lake.
- Mud Mountain Lake's dam is used for Flood control, Recreation.