Reservoir · Colorado · United States · BOR RISE
Blue Mesa Reservoir
Blue Mesa Reservoir Dam and Powerplant
21.4% full
Capacity
923.17 hm³
Volume stored
197 hm³
Coordinates
38.464°N, 107.225°W
Last updated
2026-09-09
Current fill
21.4%vs 7 days ago
-1.8%losing
vs 1 year ago
-38.0%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. 38.464, -107.225 · Open in Google Maps
About Blue Mesa Reservoir
As of September 9, 2026, Blue Mesa Reservoir is filled to 21.4% of its total capacity, holding roughly 197 hm³ of water out of a maximum 923 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 1.8 percentage points, and it is 38.0 points below its level on the same date a year earlier.
Across the readings we hold for Blue Mesa Reservoir — 1824 data points between September 12, 2021 and September 9, 2026 — the level has ranged from a low of 21.4% (September 9, 2026) to a high of 102.2% (June 25, 2023). 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 Colorado basin at 38.464°N, 107.225°W.
Key facts
- Current fill level
- 21.4%
- Water stored
- 197 hm³
- Total capacity
- 923 hm³
- 7-day change
- ▼ 1.8 pts
- Year-on-year
- ▼ 38.0 pts
- Primary use
- Multipurpose
- River basin
- Colorado
- Operator
- BOR
- Coordinates
- 38.464°N, 107.225°W
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 21.4% | 197 |
| 8 Sep 2026 | 21.6% | 200 |
| 7 Sep 2026 | 21.9% | 202 |
| 6 Sep 2026 | 22.2% | 205 |
| 5 Sep 2026 | 22.4% | 207 |
| 4 Sep 2026 | 22.7% | 210 |
| 3 Sep 2026 | 23.0% | 212 |
| 2 Sep 2026 | 23.2% | 214 |
| 1 Sep 2026 | 23.5% | 217 |
| 31 Aug 2026 | 23.7% | 219 |
| 30 Aug 2026 | 24.0% | 222 |
| 29 Aug 2026 | 24.3% | 224 |