Reservoir · Montana · United States · BOR RISE
Pishkun Reservoir
Pishkun Reservoir and Dikes
40.8% full
Capacity
57.57 hm³
Volume stored
24 hm³
Vs month average
59% of normal
Coordinates
47.677°N, 112.497°W
Last updated
2026-10-12
Current fill
40.8%vs 7 days ago
0.0%stable
vs 1 year ago
-20.9%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
59%of normal
40.8% full on 2026-10-12, against an average of 69.4% for October across 6 years of readings (-28.6 points).
Drought Monitor at this site · 6 October 2026
Nonenot in a drought category
Pishkun Reservoir's coordinates fall outside every category on the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Montana drought figures →
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: 2026-10-12.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 47.677, -112.497 · Open in Google Maps
About Pishkun Reservoir
As of October 12, 2026, Pishkun Reservoir is filled to 40.8% of its total capacity, holding roughly 24 hm³ of water out of a maximum 58 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 (+0.0 pts), and it is 20.9 points below its level on the same date a year earlier.
Across the readings we hold for Pishkun Reservoir — 2026 data points between October 14, 2021 and October 12, 2026 — the level has ranged from a low of 40.8% (September 23, 2026) to a high of 100.2% (July 2, 2026). On average the reservoir is fullest around June and at its lowest around October.
It is operated by BOR primarily for multiple purposes. It lies within the Montana basin at 47.677°N, 112.497°W.
Key facts
- Current fill level
- 40.8%
- Water stored
- 24 hm³
- Total capacity
- 58 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 20.9 pts
- Primary use
- Multipurpose
- River basin
- Montana
- Operator
- BOR
- Coordinates
- 47.677°N, 112.497°W
- Last updated
- October 12, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 12 Oct 2026 | 40.8% | 23 |
| 11 Oct 2026 | 40.8% | 23 |
| 10 Oct 2026 | 40.8% | 23 |
| 9 Oct 2026 | 40.8% | 23 |
| 8 Oct 2026 | 40.8% | 23 |
| 7 Oct 2026 | 40.8% | 23 |
| 6 Oct 2026 | 40.8% | 23 |
| 5 Oct 2026 | 40.8% | 23 |
| 4 Oct 2026 | 40.8% | 23 |
| 3 Oct 2026 | 40.8% | 23 |
| 2 Oct 2026 | 40.8% | 23 |
| 1 Oct 2026 | 40.8% | 23 |