Reservoir · Montana · United States · USACE CWMS
Fresno Reservoir
28.0% full
Capacity
159.2 hm³
Volume stored
45 hm³
Coordinates
48.601°N, 109.944°W
Last updated
2026-08-13
Current fill
28.0%vs 7 days ago
-6.5%losing
vs 1 year ago
+6.0%year-over-year
7-day trend
↓falling
Data source: USACE CWMS — US Army Corps of Engineers — 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: 2026-08-13.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 48.601, -109.944 · Open in Google Maps
About Fresno Reservoir
As of August 13, 2026, Fresno Reservoir is filled to 28.0% of its total capacity, holding roughly 45 hm³ of water out of a maximum 159 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 6.5 percentage points, and it is 6.0 points above its level on the same date a year earlier.
Across the readings we hold for Fresno Reservoir — 1821 data points between August 15, 2021 and August 13, 2026 — the level has ranged from a low of 6.0% (July 6, 2025) to a high of 71.2% (May 9, 2023). On average the reservoir is fullest around May and at its lowest around February.
It is operated by USACE primarily for multiple purposes. It lies within the Montana basin at 48.601°N, 109.944°W.
Key facts
- Current fill level
- 28.0%
- Water stored
- 45 hm³
- Total capacity
- 159 hm³
- 7-day change
- ▼ 6.5 pts
- Year-on-year
- ▲ 6.0 pts
- Primary use
- Multipurpose
- River basin
- Montana
- Operator
- USACE
- Coordinates
- 48.601°N, 109.944°W
- Last updated
- August 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Aug 2026 | 28.0% | 45 |
| 12 Aug 2026 | 28.9% | 46 |
| 11 Aug 2026 | 29.8% | 47 |
| 10 Aug 2026 | 30.7% | 49 |
| 9 Aug 2026 | 31.6% | 50 |
| 8 Aug 2026 | 32.5% | 52 |
| 7 Aug 2026 | 33.5% | 53 |
| 6 Aug 2026 | 34.5% | 55 |
| 5 Aug 2026 | 35.5% | 56 |
| 4 Aug 2026 | 36.2% | 58 |
| 3 Aug 2026 | 40.2% | 64 |
| 2 Aug 2026 | 40.2% | 64 |
Frequently asked questions
What is the current water level of Fresno Reservoir?
As of August 13, 2026, Fresno Reservoir is at 28.0% of its capacity, holding approximately 45 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Fresno Reservoir reservoir full?
No. As of August 13, 2026, Fresno Reservoir is low at 28.0% of its capacity, so it is not full.
Is the water level at Fresno Reservoir rising or falling?
The level at Fresno Reservoir is falling — it dropped 6.5 percentage points over the latest week on record.
How much water can Fresno Reservoir hold?
Fresno Reservoir has a total capacity of 159 hm³.
Where is Fresno Reservoir reservoir located?
Fresno Reservoir is located in Montana, United States, within the Montana basin (coordinates 48.601°N, 109.944°W).
What is Fresno Reservoir used for?
Fresno Reservoir is used primarily for multiple purposes, and is managed by USACE.