Reservoir · Wyoming · United States · BOR RISE
Kortes Reservoir
Kortes Reservoir and Dam
99.3% full
Capacity
5.85 hm³
Volume stored
6 hm³
Vs month average
100% of normal
Coordinates
42.174°N, 106.881°W
Last updated
2026-10-19
Current fill
99.3%vs 7 days ago
-0.2%losing
vs 1 year ago
-0.5%year-over-year
7-day trend
→stable
Drought context
Storage vs October average
100%of normal
99.3% full on 2026-10-19, against an average of 99.5% for October across 6 years of readings (-0.2 points).
Drought Monitor at this site · 13 October 2026
D2severe drought
The ground at Kortes 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: 2026-10-19.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 42.174, -106.881 · Open in Google Maps
About Kortes Reservoir
As of October 19, 2026, Kortes Reservoir is filled to 99.3% of its total capacity, holding roughly 6 hm³ of water out of a maximum 6 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it sits close to where it was a year earlier.
Across the readings we hold for Kortes Reservoir — 1823 data points between October 23, 2021 and October 19, 2026 — the level has ranged from a low of 89.6% (September 8, 2025) to a high of 103.6% (June 24, 2023). On average the reservoir is fullest around June and at its lowest around September.
It is operated by BOR primarily for multiple purposes. It lies within the Wyoming basin at 42.174°N, 106.881°W.
Key facts
- Current fill level
- 99.3%
- Water stored
- 6 hm³
- Total capacity
- 6 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 0.5 pts
- Primary use
- Multipurpose
- River basin
- Wyoming
- Operator
- BOR
- Coordinates
- 42.174°N, 106.881°W
- Last updated
- October 19, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 19 Oct 2026 | 99.3% | 6 |
| 18 Oct 2026 | 99.5% | 6 |
| 17 Oct 2026 | 99.5% | 6 |
| 16 Oct 2026 | 99.7% | 6 |
| 15 Oct 2026 | 99.5% | 6 |
| 14 Oct 2026 | 99.5% | 6 |
| 13 Oct 2026 | 99.7% | 6 |
| 12 Oct 2026 | 99.5% | 6 |
| 11 Oct 2026 | 99.5% | 6 |
| 10 Oct 2026 | 99.8% | 6 |
| 9 Oct 2026 | 99.5% | 6 |
| 8 Oct 2026 | 99.7% | 6 |