Reservoir · Wyoming · United States · BOR RISE
Buffalo Bill Reservoir
Buffalo Bill Reservoir Dam and Powerplant
60.5% full
Capacity
797.53 hm³
Volume stored
483 hm³
Vs month average
97% of normal
Coordinates
44.501°N, 109.183°W
Last updated
2026-10-28
Current fill
60.5%vs 7 days ago
+0.4 ppgaining
vs 1 year ago
+6.9 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
97%of normal
60.5% full on 2026-10-28, against an average of 62.2% for October across 6 years of readings (-1.7 points).
Drought Monitor at this site · 27 October 2026
D2severe drought
The ground at Buffalo Bill Reservoir's coordinates falls inside the D2 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Wyoming 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. 44.501°N, 109.183°W · Open in Google Maps
About Buffalo Bill Reservoir
As of October 28, 2026, Buffalo Bill Reservoir is filled to 60.5% of its total capacity, holding 482.68 hm³ of water out of a maximum 797.53 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 (+0.4 pp), and it is 6.9 points above its level on the same date a year earlier.
Across the readings we hold for Buffalo Bill Reservoir — 1954 data points between October 30, 2021 and October 28, 2026 — the level has ranged from a low of 52.5% (October 14, 2025) to a high of 98.0% (July 17, 2022). On average the reservoir is fullest around July and at its lowest around November.
It is operated by BOR primarily for multiple purposes. It is at 44.501°N, 109.183°W.
Key facts
- Current fill level
- 60.5% of total capacity
- Water stored
- 482.68 hm³
- Total capacity
- 797.53 hm³
- 7-day change
- ▲ 0.4 pp
- Year-on-year
- ▲ 6.9 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 44.501°N, 109.183°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 60.5% | 482.68 |
| 27 Oct 2026 | 60.5% | 482.28 |
| 26 Oct 2026 | 60.4% | 481.9 |
| 25 Oct 2026 | 60.4% | 481.41 |
| 24 Oct 2026 | 60.3% | 480.94 |
| 23 Oct 2026 | 60.2% | 480.23 |
| 22 Oct 2026 | 60.2% | 479.83 |
| 21 Oct 2026 | 60.1% | 479.44 |
| 20 Oct 2026 | 60.1% | 479.04 |
| 19 Oct 2026 | 60.1% | 479.59 |
| 18 Oct 2026 | 60.2% | 480.07 |
| 17 Oct 2026 | 60.3% | 480.62 |