Lake Bonneville Water Level Today
Oregon · near Gresham, Oregon · Near full pool
- Elevation
- 75.90 ft
- From full pool
- −1.10 ft
- Percent of pool
- 80.0%
- 24-hour change
- −0.10 ft
- 7-day change
- +0.56 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Lake Bonneville
Lake Bonneville is 1.10 ft below full pool, at 75.90 ft, down 0.10 ft in the last 24 hours. That puts the lake at 80.0 percent of its conservation pool.
Over the last 7 days the level rose 0.56 ft, and over 30 days it rose 0.47 ft. In the 400 days of readings on this page the high was 76.04 ft on Sep 4, 2026 and the low was 71.99 ft on Dec 13, 2025, a range of 4.05 ft.
The reading is the U.S. Army Corps of Engineers gauge at Bonneville Lock and Dam, near Gresham, Oregon, 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 Bonneville pool elevations
| Current elevation | 75.90 ft |
|---|---|
| Full pool (top of conservation) | 77.00 ft |
| Bottom of conservation pool | 71.50 ft |
| Top of dam | 97.00 ft |
| Inflow | 76,600 cfs |
| Outflow | 71,600 cfs |
| Water temperature | 68.3 °F |
| 30-day change | +0.47 ft |
| 1-year high | 76.04 ft (Sep 4, 2026) |
| 1-year low | 71.99 ft (Dec 13, 2025) |
| 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 Oregon
- Applegate Lake 1,904.03 ft, −82.97 ft from full
- Beulah Reservoir 3,289.79 ft, −43.21 ft from full
- Blue River Lake 1,258.54 ft, −91.46 ft from full
- Brownlee Lake 2,055.68 ft, −18.32 ft from full
- Bully Creek Reservoir 2,479.76 ft, −30.24 ft from full
- Cottage Grove Lake 770.54 ft, −19.46 ft from full
Lake Bonneville level questions
What is the water level of Lake Bonneville today?
Lake Bonneville is at 75.90 ft as of Sep 21, 2026, −1.10 ft relative to full pool (77.00 ft). The 24-hour change is −0.10 ft.
What is full pool at Lake Bonneville?
Full pool, the top of the conservation pool, is 77.00 ft (NGVD29). The bottom of the conservation pool is 71.50 ft.
Is Lake Bonneville rising or falling?
Over the last 24 hours the level is −0.10 ft; over 7 days it rose 0.56 ft, and over 30 days it rose 0.47 ft.
Where does this Lake Bonneville level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Bonneville Lock and Dam. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.