Reservoir · Utah · United States · BOR RISE
Jordanelle Reservoir
Jordanelle Reservoir Dam and Powerplant
53.3% full
Capacity
448.19 hm³
Volume stored
239 hm³
Coordinates
40.607°N, 111.417°W
Last updated
2026-09-08
Current fill
53.3%vs 7 days ago
-1.0%losing
vs 1 year ago
-11.5%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: 2026-09-08.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.607, -111.417 · Open in Google Maps
About Jordanelle Reservoir
As of September 8, 2026, Jordanelle Reservoir is filled to 53.3% of its total capacity, holding roughly 239 hm³ of water out of a maximum 448 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-1.0 pts), and it is 11.5 points below its level on the same date a year earlier.
Across the readings we hold for Jordanelle Reservoir — 1823 data points between September 12, 2021 and September 8, 2026 — the level has ranged from a low of 41.9% (March 19, 2022) to a high of 86.8% (June 21, 2023). On average the reservoir is fullest around June and at its lowest around March.
It is operated by BOR primarily for multiple purposes. It lies within the Utah basin at 40.607°N, 111.417°W.
Key facts
- Current fill level
- 53.3%
- Water stored
- 239 hm³
- Total capacity
- 448 hm³
- 7-day change
- ▼ 1.0 pts
- Year-on-year
- ▼ 11.5 pts
- Primary use
- Multipurpose
- River basin
- Utah
- Operator
- BOR
- Coordinates
- 40.607°N, 111.417°W
- Last updated
- September 8, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 8 Sep 2026 | 53.3% | 239 |
| 7 Sep 2026 | 53.4% | 239 |
| 6 Sep 2026 | 53.6% | 240 |
| 5 Sep 2026 | 53.7% | 241 |
| 4 Sep 2026 | 53.8% | 241 |
| 3 Sep 2026 | 54.0% | 242 |
| 2 Sep 2026 | 54.1% | 243 |
| 1 Sep 2026 | 54.3% | 243 |
| 31 Aug 2026 | 54.4% | 244 |
| 30 Aug 2026 | 54.5% | 244 |
| 29 Aug 2026 | 54.6% | 245 |
| 28 Aug 2026 | 54.8% | 245 |