Reservoir · Oregon · United States · BOR RISE
Unity Reservoir and Dam
12.1% full
Capacity
30.8 hm³
Volume stored
4 hm³
Coordinates
44.504°N, 118.181°W
Last updated
2026-08-11
Current fill
12.1%vs 7 days ago
-5.6%losing
vs 1 year ago
-24.8%year-over-year
7-day trend
↓falling
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: 2026-08-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 44.504, -118.181 · Open in Google Maps
About Unity Reservoir and Dam
As of August 11, 2026, Unity Reservoir and Dam is filled to 12.1% of its total capacity, holding roughly 4 hm³ of water out of a maximum 31 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has fallen by 5.6 percentage points, and it is 24.8 points below its level on the same date a year earlier.
Across the readings we hold for Unity Reservoir and Dam — 2187 data points between August 15, 2021 and August 11, 2026 — the level has ranged from a low of 9.4% (October 2, 2021) to a high of 100.6% (May 16, 2022). 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 44.504°N, 118.181°W.
Key facts
- Current fill level
- 12.1%
- Water stored
- 4 hm³
- Total capacity
- 31 hm³
- 7-day change
- ▼ 5.6 pts
- Year-on-year
- ▼ 24.8 pts
- Primary use
- Multipurpose
- River basin
- Oregon
- Operator
- BOR
- Coordinates
- 44.504°N, 118.181°W
- Last updated
- August 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Aug 2026 | 12.1% | 4 |
| 10 Aug 2026 | 12.8% | 4 |
| 9 Aug 2026 | 13.6% | 4 |
| 8 Aug 2026 | 14.4% | 4 |
| 7 Aug 2026 | 15.2% | 5 |
| 6 Aug 2026 | 16.0% | 5 |
| 5 Aug 2026 | 16.8% | 5 |
| 4 Aug 2026 | 17.7% | 5 |
| 3 Aug 2026 | 18.5% | 6 |
| 2 Aug 2026 | 19.3% | 6 |
| 1 Aug 2026 | 20.1% | 6 |
| 31 Jul 2026 | 21.0% | 6 |
Frequently asked questions
What is the current water level of Unity Reservoir and Dam?
As of August 11, 2026, Unity Reservoir and Dam is at 12.1% of its capacity, holding approximately 4 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Unity Reservoir and Dam reservoir full?
No. As of August 11, 2026, Unity Reservoir and Dam is critically low at 12.1% of its capacity, so it is not full.
Is the water level at Unity Reservoir and Dam rising or falling?
The level at Unity Reservoir and Dam is falling — it dropped 5.6 percentage points over the latest week on record.
How much water can Unity Reservoir and Dam hold?
Unity Reservoir and Dam has a total capacity of 31 hm³.
Where is Unity Reservoir and Dam reservoir located?
Unity Reservoir and Dam is located in Oregon, United States, within the Oregon basin (coordinates 44.504°N, 118.181°W).
What is Unity Reservoir and Dam used for?
Unity Reservoir and Dam is used primarily for multiple purposes, and is managed by BOR.