Lake Roosevelt Water Level Today
Washington · near Moses Lake, Washington · Below full pool
- Elevation
- 1,283.60 ft
- From full pool
- −6.40 ft
- Percent of pool
- 92.2%
- 24-hour change
- +0.30 ft
- 7-day change
- +3.08 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Lake Roosevelt
Lake Roosevelt is 6.40 ft below full pool, at 1,283.60 ft, up 0.30 ft in the last 24 hours. That puts the lake at 92.2 percent of its conservation pool. The top of the flood pool is 6.4 ft higher, at 1,290.00 ft.
Over the last 7 days the level rose 3.08 ft, and over 30 days it rose 4.59 ft. In the 400 days of readings on this page the high was 1,289.22 ft on Jul 10, 2026 and the low was 1,251.24 ft on Apr 2, 2026, a range of 37.98 ft.
The reading is the U.S. Army Corps of Engineers gauge at Grand Coulee Dam, near Moses Lake, Washington, 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.
Lake Roosevelt pool elevations
| Current elevation | 1,283.60 ft |
|---|---|
| Full pool (top of conservation) | 1,290.00 ft |
| Top of flood pool | 1,290.00 ft |
| Bottom of conservation pool | 1,208.00 ft |
| Top of dam | 1,290.00 ft |
| Inflow | 66,100 cfs |
| Outflow | 32,600 cfs |
| 30-day change | +4.59 ft |
| 1-year high | 1,289.22 ft (Jul 10, 2026) |
| 1-year low | 1,251.24 ft (Apr 2, 2026) |
| Vertical datum | NGVD29 |
| Operating agency | U.S. Army Corps of Engineers, NWDP district |
Source: U.S. Army Corps of Engineers. Read what full pool and flood pool mean.
More lakes in Washington
- 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
- Lower Baker Lake 408.65 ft, −33.70 ft from full
Lake Roosevelt level questions
What is the water level of Lake Roosevelt today?
Lake Roosevelt is at 1,283.60 ft as of Sep 21, 2026, −6.40 ft relative to full pool (1,290.00 ft). The 24-hour change is +0.30 ft.
What is full pool at Lake Roosevelt?
Full pool, the top of the conservation pool, is 1,290.00 ft (NGVD29). Above that, water is stored temporarily in the flood pool up to 1,290.00 ft. The bottom of the conservation pool is 1,208.00 ft.
Is Lake Roosevelt rising or falling?
Over the last 24 hours the level is +0.30 ft; over 7 days it rose 3.08 ft, and over 30 days it rose 4.59 ft.
Where does this Lake Roosevelt level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Grand Coulee Dam. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.