Mill Creek Lake Water Level Today
Washington · near Walla Walla · Below full pool
- Elevation
- 1,196.90 ft
- From full pool
- −8.10 ft
- Percent of pool
- 55.0%
- 24-hour change
- −0.05 ft
- 7-day change
- −0.53 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Mill Creek Lake
Mill Creek Lake is 8.10 ft below full pool, at 1,196.90 ft, down 0.05 ft in the last 24 hours. That puts the lake at 55.0 percent of its conservation pool. The top of the flood pool is 68.1 ft higher, at 1,265.00 ft.
Over the last 7 days the level fell 0.53 ft, and over 30 days it fell 2.57 ft. In the 400 days of readings on this page the high was 1,223.11 ft on Mar 15, 2026 and the low was 1,192.79 ft on Nov 1, 2025, a range of 30.32 ft.
The reading is the U.S. Army Corps of Engineers gauge at Mill Creek Dam, near Walla Walla, 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.
Mill Creek Lake pool elevations
| Current elevation | 1,196.90 ft |
|---|---|
| Full pool (top of conservation) | 1,205.00 ft |
| Top of flood pool | 1,265.00 ft |
| Bottom of conservation pool | 1,187.00 ft |
| Top of dam | 1,270.00 ft |
| Inflow | 4 cfs |
| Outflow | 0 cfs |
| 30-day change | −2.57 ft |
| 1-year high | 1,223.11 ft (Mar 15, 2026) |
| 1-year low | 1,192.79 ft (Nov 1, 2025) |
| Vertical datum | NGVD29 |
| Operating agency | U.S. Army Corps of Engineers, NWW 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
Mill Creek Lake level questions
What is the water level of Mill Creek Lake today?
Mill Creek Lake is at 1,196.90 ft as of Sep 21, 2026, −8.10 ft relative to full pool (1,205.00 ft). The 24-hour change is −0.05 ft.
What is full pool at Mill Creek Lake?
Full pool, the top of the conservation pool, is 1,205.00 ft (NGVD29). Above that, water is stored temporarily in the flood pool up to 1,265.00 ft. The bottom of the conservation pool is 1,187.00 ft.
Is Mill Creek Lake rising or falling?
Over the last 24 hours the level is −0.05 ft; over 7 days it fell 0.53 ft, and over 30 days it fell 2.57 ft.
Where does this Mill Creek Lake level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Mill Creek Dam. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.