Reservoir · Oklahoma · United States · USACE CWMS
Copan Lake
Current fill: N/A
Capacity
134.74 hm³
Volume stored
N/A
Coordinates
36.886°N, 95.967°W
Station not currently reporting
The most recent storage reading from this gauge is from 2026-09-09, more than 45 days ago, so the current fill is shown as N/A. The history below reflects that older reading.
Current fill
N/Avs 7 days ago
N/Avs 1 year ago
N/A7-day trend
N/ADrought context
Drought Monitor at this site · 27 October 2026
D1moderate drought
The ground at Copan Lake's coordinates falls inside the D1 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. Oklahoma drought figures →
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.886°N, 95.967°W · Open in Google Maps
About Copan Lake
It is operated by USACE primarily for multiple purposes. It is at 36.886°N, 95.967°W.
Key facts
- Total capacity
- 134.74 hm³
- Primary use
- Multipurpose
- Operator
- USACE
- Coordinates
- 36.886°N, 95.967°W
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 28.8% | 38.76 |
| 8 Sep 2026 | 28.9% | 38.91 |
| 7 Sep 2026 | 29.0% | 39.06 |
| 6 Sep 2026 | 29.2% | 39.31 |
| 5 Sep 2026 | 29.2% | 39.36 |
| 4 Sep 2026 | 29.2% | 39.41 |
| 3 Sep 2026 | 29.2% | 39.41 |
| 2 Sep 2026 | 29.4% | 39.61 |
| 1 Sep 2026 | 29.5% | 39.81 |
| 31 Aug 2026 | 29.6% | 39.92 |
| 30 Aug 2026 | 29.7% | 40.02 |
| 29 Aug 2026 | 30.0% | 40.37 |