Foster Reservoir Water Level Today
Oregon · near Sweet Home · Below full pool
- Elevation
- 629.62 ft
- From full pool
- −7.38 ft
- Percent of pool
- 69.3%
- 24-hour change
- −1.20 ft
- 7-day change
- −5.88 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Foster Reservoir
Foster Reservoir is 7.38 ft below full pool, at 629.62 ft, down 1.20 ft in the last 24 hours. That puts the lake at 69.3 percent of its conservation pool. The top of the flood pool is 11.4 ft higher, at 641.00 ft.
Over the last 7 days the level fell 5.88 ft, and over 30 days it fell 6.42 ft. In the 400 days of readings on this page the high was 637.24 ft on Jun 17, 2026 and the low was 612.62 ft on Dec 18, 2025, a range of 24.62 ft.
The reading is the U.S. Army Corps of Engineers gauge, near Sweet Home, 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.
Foster Reservoir pool elevations
| Current elevation | 629.62 ft |
|---|---|
| Full pool (top of conservation) | 637.00 ft |
| Top of flood pool | 641.00 ft |
| Bottom of conservation pool | 613.00 ft |
| Top of dam | 646.00 ft |
| Inflow | 141 cfs |
| Outflow | 1,326 cfs |
| 30-day change | −6.42 ft |
| 1-year high | 637.24 ft (Jun 17, 2026) |
| 1-year low | 612.62 ft (Dec 18, 2025) |
| Vertical datum | NGVD29 |
| Operating agency | U.S. Army Corps of Engineers, NWP 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
Foster Reservoir level questions
What is the water level of Foster Reservoir today?
Foster Reservoir is at 629.62 ft as of Sep 21, 2026, −7.38 ft relative to full pool (637.00 ft). The 24-hour change is −1.20 ft.
What is full pool at Foster Reservoir?
Full pool, the top of the conservation pool, is 637.00 ft (NGVD29). Above that, water is stored temporarily in the flood pool up to 641.00 ft. The bottom of the conservation pool is 613.00 ft.
Is Foster Reservoir rising or falling?
Over the last 24 hours the level is −1.20 ft; over 7 days it fell 5.88 ft, and over 30 days it fell 6.42 ft.
Where does this Foster Reservoir level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Foster Reservoir. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.