Reservoir · Utah · United States · BOR RISE
Hyrum Reservoir
Hyrum Reservoir and Dam
12.1% full
Capacity
23.05 hm³
Volume stored
3 hm³
Coordinates
41.621°N, 111.861°W
Last updated
2026-09-09
Current fill
12.1%vs 7 days ago
-2.5%losing
vs 1 year ago
-8.0%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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 41.621, -111.861 · Open in Google Maps
About Hyrum Reservoir
As of September 9, 2026, Hyrum Reservoir is filled to 12.1% of its total capacity, holding roughly 3 hm³ of water out of a maximum 23 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has fallen by 2.5 percentage points, and it is 8.0 points below its level on the same date a year earlier.
Across the readings we hold for Hyrum Reservoir — 1824 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 10.9% (September 17, 2021) to a high of 79.6% (June 12, 2023). On average the reservoir is fullest around June and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It lies within the Utah basin at 41.621°N, 111.861°W.
Key facts
- Current fill level
- 12.1%
- Water stored
- 3 hm³
- Total capacity
- 23 hm³
- 7-day change
- ▼ 2.5 pts
- Year-on-year
- ▼ 8.0 pts
- Primary use
- Multipurpose
- River basin
- Utah
- Operator
- BOR
- Coordinates
- 41.621°N, 111.861°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 12.1% | 3 |
| 8 Sep 2026 | 12.4% | 3 |
| 7 Sep 2026 | 12.7% | 3 |
| 6 Sep 2026 | 13.0% | 3 |
| 5 Sep 2026 | 13.4% | 3 |
| 4 Sep 2026 | 13.8% | 3 |
| 3 Sep 2026 | 14.1% | 3 |
| 2 Sep 2026 | 14.6% | 3 |
| 1 Sep 2026 | 14.9% | 3 |
| 31 Aug 2026 | 15.3% | 4 |
| 30 Aug 2026 | 15.6% | 4 |
| 29 Aug 2026 | 16.0% | 4 |