Mud Mountain Lake Water Level Today
Washington · near Buckley · Below full pool
- Elevation
- 917.80 ft
- From full pool
- −12.20 ft
- Percent of pool
- 65.1%
- 24-hour change
- +0.06 ft
- 7-day change
- −1.20 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Mud Mountain Lake
Mud Mountain Lake is 12.20 ft below full pool, at 917.80 ft, up 0.06 ft in the last 24 hours. That puts the lake at 65.1 percent of its conservation pool. The top of the flood pool is 297.2 ft higher, at 1,215.00 ft.
Over the last 7 days the level fell 1.20 ft, and over 30 days it fell 2.62 ft. In the 355 days of readings on this page the high was 1,184.41 ft on Dec 13, 2025 and the low was 902.61 ft on Jun 29, 2026, a range of 281.80 ft.
The reading is the U.S. Army Corps of Engineers gauge at Mud Mountain Dam nr Buckley WA, near Buckley, taken Sep 21, 2026 and referenced to the NGVD29 datum. This page is rebuilt once a day from the agency feed; it is not a live gauge, so during a fast rise or a scheduled release check the USACE page for hourly values.
Mud Mountain Lake pool elevations
| Current elevation | 917.80 ft |
|---|---|
| Full pool (top of conservation) | 930.00 ft |
| Top of flood pool | 1,215.00 ft |
| Bottom of conservation pool | 895.00 ft |
| Top of dam | 1,257.00 ft |
| Inflow | 462 cfs |
| Outflow | 466 cfs |
| 30-day change | −2.62 ft |
| 1-year high | 1,184.41 ft (Dec 13, 2025) |
| 1-year low | 902.61 ft (Jun 29, 2026) |
| Vertical datum | NGVD29 |
| Operating agency | U.S. Army Corps of Engineers, NWS district |
Source: U.S. Army Corps of Engineers. Read what full pool and flood pool mean.
More lakes in Washington
- Lake Roosevelt 1,283.60 ft, −6.40 ft from full
- Baker Lake 722.05 ft, +10.49 ft from full
- Howard A Hanson Lake 1,146.65 ft, −20.35 ft from full
- Lake Entiat 705.65 ft, −1.35 ft from full
- Lake Pateros 777.87 ft, −3.13 ft from full
- Little Goose Lake 636.63 ft, −1.37 ft from full
Mud Mountain Lake level questions
What is the water level of Mud Mountain Lake today?
Mud Mountain Lake is at 917.80 ft as of Sep 21, 2026, −12.20 ft relative to full pool (930.00 ft). The 24-hour change is +0.06 ft.
What is full pool at Mud Mountain Lake?
Full pool, the top of the conservation pool, is 930.00 ft (NGVD29). Above that, water is stored temporarily in the flood pool up to 1,215.00 ft. The bottom of the conservation pool is 895.00 ft.
Is Mud Mountain Lake rising or falling?
Over the last 24 hours the level is +0.06 ft; over 7 days it fell 1.20 ft, and over 30 days it fell 2.62 ft.
Where does this Mud Mountain Lake level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Mud Mountain Dam nr Buckley WA. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.