BIGK1 : Big Hill Lake
Current Readings
- 0.10 ft BELOW normal
- Pool elevation is 857.9 feet on 22JUL2026 03:00 hours.
- At this elevation the total amount of water stored in Big Hill Lake is 25168 acre-feet.
- Reservoir release is 0 cubic feet per second on Wednesday 22Jul2026 03:00.
- Conservation pool is 99.54% full.
- Conservation pool storage filled is 24953 acre-feet which is equivalent to 12.65 inches of runoff over the entire drainage basin.
- Conservation pool storage empty is 141 acre-feet which is equivalent to 0.07 inches of runoff over the entire drainage basin.
Gate Change
Conditions at the time of Gate Change- Sunday, 22 Jun 2025 0930
- Pool Elevation = 858.47 feet.
- Total Release = 54 (cfs)
- Gate Release = 0 (cfs)
- Unregulated Release = 54 (cfs)
- Auxillary Unregulated Release = 0 (cfs)
- Gate Settings:
- All CLOSED
Evaporation Data
- 0.498 inches - 22JUL2026 @ 07:00
Reservoir Data
| Elevation | Incremental Storage | Cumulative Storage | |||
|---|---|---|---|---|---|
| (feet) | (inches of runoff)* | (acre-feet) | (inches of runoff)* | (acre-feet) | |
| Surcharge Pool: | ---- | ---- | ---- | ---- | ---- |
| Flood Control Pool: | 867.50 | 6.29 | 12417 | 19.11 | 37700 |
| Conservation Pool: | 858.00 | 12.72 | 25094 | 12.82 | 25283 |
| Inactive Pool: | 814.00 | 0.10 | 188 | 0.10 | 188 |
Streambed Elevation: 801.00 feet.
Top of Dam Elevation: 884.00 feet.
* Values in the above "inches of runoff" column are based on a contributing drainage area of 37.0 square miles.
Longitude: -95° 28' 12 Latitude: 37° 16' 12
Map of Big Hill Lake Dam
Links for More Information
Graphs
of Measured and Calculated Lake Parameters
Big Hill Lake
Go to Tulsa District Water Control Home Page.
Disclaimer:These pages are subject to change.Last Page Update: Wednesday, 22 Jul 2026 03:32