Reservoir · Oregon · United States · BOR RISE
Gerber Reservoir
Gerber Reservoir and Dam
32.4% full
Capacity
113.75 hm³
Volume stored
37 hm³
Coordinates
42.201°N, 121.130°W
Last updated
2026-09-30
Current fill
32.4%vs 7 days ago
-0.3%losing
vs 1 year ago
-20.8%year-over-year
7-day trend
→stable
Data source: BOR RISE — US Bureau of Reclamation — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-09-30.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.201, -121.130 · Open in Google Maps
About Gerber Reservoir
As of September 30, 2026, Gerber Reservoir is filled to 32.4% of its total capacity, holding roughly 37 hm³ of water out of a maximum 114 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.3 pts), and it is 20.8 points below its level on the same date a year earlier.
Across the readings we hold for Gerber Reservoir — 1819 data points between October 2, 2021 and September 30, 2026 — the level has ranged from a low of 1.3% (November 22, 2022) to a high of 96.3% (May 2, 2025). On average the reservoir is fullest around May and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It lies within the Oregon basin at 42.201°N, 121.130°W.
Key facts
- Current fill level
- 32.4%
- Water stored
- 37 hm³
- Total capacity
- 114 hm³
- 7-day change
- ▼ 0.3 pts
- Year-on-year
- ▼ 20.8 pts
- Primary use
- Multipurpose
- River basin
- Oregon
- Operator
- BOR
- Coordinates
- 42.201°N, 121.130°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 32.4% | 37 |
| 29 Sep 2026 | 32.4% | 37 |
| 28 Sep 2026 | 32.4% | 37 |
| 27 Sep 2026 | 32.4% | 37 |
| 26 Sep 2026 | 32.4% | 37 |
| 25 Sep 2026 | 32.4% | 37 |
| 24 Sep 2026 | 32.5% | 37 |
| 23 Sep 2026 | 32.7% | 37 |
| 22 Sep 2026 | 32.8% | 37 |
| 21 Sep 2026 | 33.1% | 38 |
| 20 Sep 2026 | 33.2% | 38 |
| 19 Sep 2026 | 33.4% | 38 |