Reservoir · Montana · United States · USACE CWMS
Canyon Ferry Dam & Reservoir
85.7% full
Capacity
2,401.59 hm³
Volume stored
2059 hm³
Coordinates
46.648°N, 111.729°W
Last updated
2026-07-29
Current fill
85.7%vs 7 days ago
-0.2%losing
vs 1 year ago
+2.5%year-over-year
7-day trend
→stable
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: 2026-07-29.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 46.648, -111.729 · Open in Google Maps
About Canyon Ferry Dam & Reservoir
As of July 29, 2026, Canyon Ferry Dam & Reservoir is filled to 85.7% of its total capacity, holding roughly 2,059 hm³ of water out of a maximum 2,402 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it is 2.5 points above its level on the same date a year earlier.
Across the readings we hold for Canyon Ferry Dam & Reservoir — 1821 data points between July 31, 2021 and July 29, 2026 — the level has ranged from a low of 64.6% (February 27, 2022) to a high of 97.3% (July 9, 2022). On average the reservoir is fullest around July and at its lowest around February.
It is operated by USACE primarily for multiple purposes. It lies within the Montana basin at 46.648°N, 111.729°W.
Key facts
- Current fill level
- 85.7%
- Water stored
- 2,059 hm³
- Total capacity
- 2,402 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▲ 2.5 pts
- Primary use
- Multipurpose
- River basin
- Montana
- Operator
- USACE
- Coordinates
- 46.648°N, 111.729°W
- Last updated
- July 29, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 29 Jul 2026 | 85.7% | 2,059 |
| 28 Jul 2026 | 85.9% | 2,062 |
| 27 Jul 2026 | 86.0% | 2,064 |
| 26 Jul 2026 | 85.9% | 2,064 |
| 25 Jul 2026 | 86.3% | 2,072 |
| 24 Jul 2026 | 86.2% | 2,070 |
| 23 Jul 2026 | 86.4% | 2,074 |
| 22 Jul 2026 | 86.4% | 2,076 |
| 21 Jul 2026 | 86.5% | 2,077 |
| 20 Jul 2026 | 86.5% | 2,078 |
| 19 Jul 2026 | 86.7% | 2,083 |
| 18 Jul 2026 | 86.9% | 2,087 |
Frequently asked questions
What is the current water level of Canyon Ferry Dam & Reservoir?
As of July 29, 2026, Canyon Ferry Dam & Reservoir is at 85.7% of its capacity, holding approximately 2,059 hm³ of water, according to USACE CWMS (US Army Corps of Engineers) data.
Is Canyon Ferry Dam & Reservoir reservoir full?
No. As of July 29, 2026, Canyon Ferry Dam & Reservoir is high at 85.7% of its capacity, so it is not full.
Is the water level at Canyon Ferry Dam & Reservoir rising or falling?
The level at Canyon Ferry Dam & Reservoir has been broadly stable over the latest week on record (-0.2 points).
How much water can Canyon Ferry Dam & Reservoir hold?
Canyon Ferry Dam & Reservoir has a total capacity of 2,402 hm³.
Where is Canyon Ferry Dam & Reservoir reservoir located?
Canyon Ferry Dam & Reservoir is located in Montana, United States, within the Montana basin (coordinates 46.648°N, 111.729°W).
What is Canyon Ferry Dam & Reservoir used for?
Canyon Ferry Dam & Reservoir is used primarily for multiple purposes, and is managed by USACE.