Reservoir · Utah · United States · BOR RISE
Lake Powell
Lake Powell Glen Canyon Dam and Powerplant
20.4% full
Capacity
30,868.91 hm³
Volume stored
6310 hm³
Coordinates
37.058°N, 111.303°W
Last updated
2026-09-09
Current fill
20.4%vs 7 days ago
-0.1%losing
vs 1 year ago
-7.2%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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.058, -111.303 · Open in Google Maps
About Lake Powell
As of September 9, 2026, Lake Powell is filled to 20.4% of its total capacity, holding roughly 6,310 hm³ of water out of a maximum 30,869 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has held broadly steady (-0.1 pts), and it is 7.2 points below its level on the same date a year earlier.
Across the readings we hold for Lake Powell — 1824 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 20.4% (September 9, 2026) to a high of 39.5% (July 7, 2024). On average the reservoir is fullest around July and at its lowest around April.
It is operated by BOR primarily for multiple purposes. It lies within the Utah basin at 37.058°N, 111.303°W.
Key facts
- Current fill level
- 20.4%
- Water stored
- 6,310 hm³
- Total capacity
- 30,869 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 7.2 pts
- Primary use
- Multipurpose
- River basin
- Utah
- Operator
- BOR
- Coordinates
- 37.058°N, 111.303°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 20.4% | 6,310 |
| 8 Sep 2026 | 20.5% | 6,317 |
| 7 Sep 2026 | 20.5% | 6,325 |
| 6 Sep 2026 | 20.5% | 6,330 |
| 5 Sep 2026 | 20.5% | 6,333 |
| 4 Sep 2026 | 20.5% | 6,336 |
| 3 Sep 2026 | 20.5% | 6,339 |
| 2 Sep 2026 | 20.5% | 6,343 |
| 1 Sep 2026 | 20.6% | 6,344 |
| 31 Aug 2026 | 20.6% | 6,344 |
| 30 Aug 2026 | 20.6% | 6,346 |
| 29 Aug 2026 | 20.6% | 6,351 |