Reservoir · Wyoming · United States · BOR RISE
Pathfinder Reservoir
Pathfinder Reservoir and Dam
18.9% full
Capacity
1,253.83 hm³
Volume stored
238 hm³
Vs month average
45% of normal
Coordinates
42.468°N, 106.854°W
Last updated
2026-10-28
Current fill
18.9%vs 7 days ago
+0.5 ppgaining
vs 1 year ago
-13.9 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
45%of normal
18.9% full on 2026-10-28, against an average of 41.7% for October across 6 years of readings (-22.8 points).
Drought Monitor at this site · 27 October 2026
D2severe drought
The ground at Pathfinder 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. 42.468°N, 106.854°W · Open in Google Maps
About Pathfinder Reservoir
As of October 28, 2026, Pathfinder Reservoir is filled to 18.9% of its total capacity, holding 237.57 hm³ of water out of a maximum 1,254 hm³. At this level the reservoir is critically low.
Over the most recent week on record the fill level has held broadly steady (+0.5 pp), and it is 13.9 points below its level on the same date a year earlier.
Across the readings we hold for Pathfinder Reservoir — 1954 data points between October 30, 2021 and October 28, 2026 — the level has ranged from a low of 16.9% (September 28, 2026) to a high of 80.2% (May 29, 2024). On average the reservoir is fullest around June and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It is at 42.468°N, 106.854°W.
Key facts
- Current fill level
- 18.9% of total capacity
- Water stored
- 237.57 hm³
- Total capacity
- 1,254 hm³
- 7-day change
- ▲ 0.5 pp
- Year-on-year
- ▼ 13.9 pp
- Primary use
- Multipurpose
- Operator
- BOR
- Coordinates
- 42.468°N, 106.854°W
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 18.9% | 237.57 |
| 27 Oct 2026 | 18.9% | 236.75 |
| 26 Oct 2026 | 18.8% | 235.87 |
| 25 Oct 2026 | 18.7% | 234.69 |
| 24 Oct 2026 | 18.7% | 233.89 |
| 23 Oct 2026 | 18.6% | 232.71 |
| 22 Oct 2026 | 18.5% | 231.91 |
| 21 Oct 2026 | 18.4% | 231.03 |
| 20 Oct 2026 | 18.3% | 230.01 |
| 19 Oct 2026 | 18.3% | 229 |
| 18 Oct 2026 | 18.2% | 228.13 |
| 17 Oct 2026 | 18.1% | 227.33 |