Mason Dam&Phillips Lake Water Level Today
Oregon · near Pendleton · Well below full pool
- Elevation
- 3,985.34 ft
- From full pool
- −77.03 ft
- Percent of pool
- 11.8%
- 24-hour change
- −0.07 ft
- 7-day change
- −0.53 ft
- Reading
- Sep 21, 2026 · USACE
Last year at Mason Dam&Phillips Lake
Mason Dam&Phillips Lake is 77.03 ft below full pool, at 3,985.34 ft, down 0.07 ft in the last 24 hours. That puts the lake at 11.8 percent of its conservation pool. The top of the flood pool is 91.7 ft higher, at 4,077.00 ft.
Over the last 7 days the level fell 0.53 ft, and over 30 days it fell 3.90 ft. In the 396 days of readings on this page the high was 4,036.57 ft on Aug 18, 2025 and the low was 3,985.34 ft on Sep 21, 2026, a range of 51.23 ft.
The reading is the U.S. Army Corps of Engineers gauge at Mason Dam&Phillips Lk nr Baker, near Pendleton, 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.
Mason Dam&Phillips Lake pool elevations
| Current elevation | 3,985.34 ft |
|---|---|
| Full pool (top of conservation) | 4,062.37 ft |
| Top of flood pool | 4,077.00 ft |
| Bottom of conservation pool | 3,975.00 ft |
| Top of dam | 4,082.00 ft |
| Inflow | -0 cfs |
| Outflow | 12 cfs |
| 30-day change | −3.90 ft |
| 1-year high | 4,036.57 ft (Aug 18, 2025) |
| 1-year low | 3,985.34 ft (Sep 21, 2026) |
| 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 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
Mason Dam&Phillips Lake level questions
What is the water level of Mason Dam&Phillips Lake today?
Mason Dam&Phillips Lake is at 3,985.34 ft as of Sep 21, 2026, −77.03 ft relative to full pool (4,062.37 ft). The 24-hour change is −0.07 ft.
What is full pool at Mason Dam&Phillips Lake?
Full pool, the top of the conservation pool, is 4,062.37 ft (NGVD29). Above that, water is stored temporarily in the flood pool up to 4,077.00 ft. The bottom of the conservation pool is 3,975.00 ft.
Is Mason Dam&Phillips Lake rising or falling?
Over the last 24 hours the level is −0.07 ft; over 7 days it fell 0.53 ft, and over 30 days it fell 3.90 ft.
Where does this Mason Dam&Phillips Lake level come from?
From the U.S. Army Corps of Engineers (USACE) public data feed for Mason Dam&Phillips Lk nr Baker. Lake Levels Today republishes the agency's daily value without adjustment and links to the source below.