Pathfinder Reservoir water level
▼ 13.7 points from 30.6% a year ago
Source: data.usbr.gov/rise/api/catalog-item/645, accessed October 1, 2026. Updated every 6 hours.
Pathfinder Reservoir is at 17% of full pool (5781.6 ft) as of September 27, 2026. Pathfinder Reservoir was last full on June 1, 2020 (95.3% of normal storage). Pathfinder Reservoir is near Alcova, Wyoming.
Pathfinder Reservoir level history
This site counts a reservoir as full on a day its storage is at or above 95% of the dam's normal storage (National Inventory of Dams). Many reservoirs rarely reach 100%, even in wet years, because operators release water for irrigation, power or flood control before they fill, so this site treats 95% as full. Highs and lows are daily readings in the published data, not official records. Source: Bureau of Reclamation daily data.
Storage, % of full pool, since 1945
Pathfinder Reservoir is falling: 17.1% full, down 0.3 percentage points since September 20, 2026.
On this same date last year (September 28, 2025), Pathfinder Reservoir was 30.6% full, 13.5 percentage points higher than today's 17.1%.
Weekly averages of the source's daily readings; older years may be monthly or sparser where that is all the source published. Download the charted data (JSON).
Pathfinder Reservoir map
Pathfinder Reservoir is at 42.4680, -106.8538. Open in OpenStreetMap.
The dam
- Hydropower
- Irrigation
Sources: nid.sec.usace.army.mil, accessed September 29, 2026
On the water
No campgrounds, boat ramps, or swim spots linked to Pathfinder Reservoir yet.
Common questions
- Pathfinder Reservoir is at 17% of full pool (5781.6 ft) as of September 27, 2026.
- Pathfinder Reservoir was last full on June 1, 2020, when it held 95.3% of its normal storage (elevation 5,847.88 ft). This site counts a reservoir as full on a day its storage is at or above 95% of the dam's normal storage (National Inventory of Dams). Many reservoirs rarely reach 100%, even in wet years, because operators release water for irrigation, power or flood control before they fill, so this site treats 95% as full. Based on Bureau of Reclamation daily data since October 1, 1945.
- In Bureau of Reclamation daily data since October 1, 1945, Pathfinder Reservoir's highest elevation was 5,853.49 ft on June 2, 2016. Its lowest after it first filled (April 23, 1950) was 5,690 ft on September 9, 1958. These are the highest and lowest daily readings in the published data, not official records.
- Pathfinder Reservoir is near Alcova, Wyoming (42.4680, -106.8538).
- Bureau of Reclamation operates the dam at Pathfinder Reservoir.
- Pathfinder Reservoir's dam is used for Hydropower, Irrigation.