Choke Canyon Reservoir: 21.8% full as of 2026-10-09
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Today | 2026-10-09 | 21.8 | 190.94 | 144,453 | 144,452 | 662,820 | 10,301 |
| Yesterday | 2026-10-08 | 21.8 | 190.96 | 144,659 | 144,658 | 662,820 | 10,309 |
| 2 days ago | 2026-10-07 | 21.9 | 190.98 | 144,865 | 144,864 | 662,820 | 10,317 |
| 1 week ago | 2026-10-02 | 22.0 | 191.09 | 146,003 | 146,002 | 662,820 | 10,362 |
| 1 month ago | 2026-09-09 | 22.9 | 191.65 | 151,868 | 151,867 | 662,820 | 10,584 |
| 3 months ago | 2026-07-09 | 8.2 | 179.61 | 54,551 | 54,550 | 662,820 | 5,559 |
| 6 months ago | 2026-04-09 | 7.5 | 178.73 | 49,818 | 49,817 | 662,820 | 5,198 |
| 1 year ago | 2025-10-09 | 11.2 | 182.82 | 74,528 | 74,527 | 662,820 | 6,892 |
*
Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.
**
Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.
Most Recent Instantaneous Water Level
| Date/time |
Water Level (ft) |
Conservation Pool Elevation (ft) |
Height Above Conservation Pool (ft) |
|
|---|---|---|---|---|
| Most recent | 2026-10-09 04:15 | 190.94 | 220.50 | -29.56 |
| 1 hour prior | 2026-10-09 03:15 | 190.94 | 220.50 | -29.56 |
| 2 hours prior | 2026-10-09 02:15 | 190.94 | 220.50 | -29.56 |
| 6 hours prior | 2026-10-08 22:15 | 190.94 | 220.50 | -29.56 |
| 12 hours prior | 2026-10-08 16:15 | 190.96 | 220.50 | -29.54 |
| 24 hours prior | 2026-10-08 04:15 | 190.96 | 220.50 | -29.54 |
| 48 hours prior | 2026-10-07 04:15 | 190.99 | 220.50 | -29.51 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1982-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 136.40 ft above NGVD29 |
| Service spillway crest elevation | 199.50 ft above NGVD29 |
| Emergency spillway crest elevation | 223.20 ft above NGVD29 |
| Maximum design elevation | 232.18 ft above NGVD29 |
| Top of dam elevation | 241.14 ft above NGVD29 |
| Conservation pool elevation | 220.50 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1983-01-01 (source: USBR)
1993-03-01 (source: TWDB)
: GIS Data
2012-06-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08206900 |
| USGS Monitoring Location | USGS:08206900 |
Lake Location
