Reservoir · Montana · United States · BOR RISE
Fresno Reservoir and Dam
41.8% full
Capacity
159.2 hm³
Volume stored
67 hm³
Coordinates
48.608°N, 109.946°W
Last updated
2026-07-28
Current fill
41.8%vs 7 days ago
-0.7%losing
vs 1 year ago
+12.6%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: 2026-07-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 48.608, -109.946 · Open in Google Maps
About Fresno Reservoir and Dam
As of July 28, 2026, Fresno Reservoir and Dam is filled to 41.8% of its total capacity, holding roughly 67 hm³ of water out of a maximum 159 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 (-0.7 pts), and it is 12.6 points above its level on the same date a year earlier.
Across the readings we hold for Fresno Reservoir and Dam — 1826 data points between July 31, 2021 and July 28, 2026 — the level has ranged from a low of 6.0% (July 5, 2025) to a high of 71.2% (May 8, 2023). On average the reservoir is fullest around May and at its lowest around February.
It is operated by BOR primarily for multiple purposes. It lies within the Montana basin at 48.608°N, 109.946°W.
Key facts
- Current fill level
- 41.8%
- Water stored
- 67 hm³
- Total capacity
- 159 hm³
- 7-day change
- ▼ 0.7 pts
- Year-on-year
- ▲ 12.6 pts
- Primary use
- Multipurpose
- River basin
- Montana
- Operator
- BOR
- Coordinates
- 48.608°N, 109.946°W
- Last updated
- July 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Jul 2026 | 41.8% | 67 |
| 27 Jul 2026 | 42.5% | 68 |
| 26 Jul 2026 | 43.3% | 69 |
| 25 Jul 2026 | 44.0% | 70 |
| 24 Jul 2026 | 44.8% | 71 |
| 23 Jul 2026 | 45.6% | 73 |
| 22 Jul 2026 | 46.3% | 74 |
| 21 Jul 2026 | 47.1% | 75 |
| 20 Jul 2026 | 47.9% | 76 |
| 19 Jul 2026 | 48.8% | 78 |
| 18 Jul 2026 | 49.6% | 79 |
| 17 Jul 2026 | 50.4% | 80 |
Frequently asked questions
What is the current water level of Fresno Reservoir and Dam?
As of July 28, 2026, Fresno Reservoir and Dam is at 41.8% of its capacity, holding approximately 67 hm³ of water, according to BOR RISE (US Bureau of Reclamation) data.
Is Fresno Reservoir and Dam reservoir full?
No. As of July 28, 2026, Fresno Reservoir and Dam is within its normal operating range at 41.8% of its capacity, so it is not full.
Is the water level at Fresno Reservoir and Dam rising or falling?
The level at Fresno Reservoir and Dam has been broadly stable over the latest week on record (-0.7 points).
How much water can Fresno Reservoir and Dam hold?
Fresno Reservoir and Dam has a total capacity of 159 hm³.
Where is Fresno Reservoir and Dam reservoir located?
Fresno Reservoir and Dam is located in Montana, United States, within the Montana basin (coordinates 48.608°N, 109.946°W).
What is Fresno Reservoir and Dam used for?
Fresno Reservoir and Dam is used primarily for multiple purposes, and is managed by BOR.