Reservoir · Montana · United States · BOR RISE
Pishkun Reservoir
Pishkun Reservoir and Dikes
46.6% full
Capacity
57.57 hm³
Volume stored
27 hm³
Vs month average
69% of normal
Coordinates
47.677°N, 112.497°W
Last updated
2026-10-28
Current fill
46.6%vs 7 days ago
0.0 ppstable
vs 1 year ago
-14.5 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
69%of normal
46.6% full on 2026-10-28, against an average of 67.2% for October across 6 years of readings (-20.6 points).
Drought Monitor at this site · 27 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 47.677°N, 112.497°W · Open in Google Maps
About Pishkun Reservoir
As of October 28, 2026, Pishkun Reservoir is filled to 46.6% of its total capacity, holding 26.8 hm³ of water out of a maximum 57.57 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 pp), and it is 14.5 points below its level on the same date a year earlier.
Across the readings we hold for Pishkun Reservoir — 2026 data points between October 30, 2021 and October 28, 2026 — the level has ranged from a low of 46.6% (September 28, 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 is at 47.677°N, 112.497°W.
Key facts
- Current fill level
- 46.6% of total capacity
- Water stored
- 26.8 hm³
- Total capacity
- 57.57 hm³
- 7-day change
- No change
- Year-on-year
- ▼ 14.5 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 47.677°N, 112.497°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 46.6% | 26.8 |
| 27 Oct 2026 | 46.6% | 26.8 |
| 26 Oct 2026 | 46.6% | 26.8 |
| 25 Oct 2026 | 46.6% | 26.8 |
| 24 Oct 2026 | 46.6% | 26.8 |
| 23 Oct 2026 | 46.6% | 26.8 |
| 22 Oct 2026 | 46.6% | 26.8 |
| 21 Oct 2026 | 46.6% | 26.8 |
| 20 Oct 2026 | 46.6% | 26.8 |
| 19 Oct 2026 | 46.6% | 26.8 |
| 18 Oct 2026 | 46.6% | 26.8 |
| 17 Oct 2026 | 46.6% | 26.8 |