Choke Canyon Reservoir: 21.1% full as of 2026-11-09
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 | 2026-11-09 | 21.1 | 190.51 | 140,062 | 140,061 | 662,820 | 10,126 |
| Yesterday | 2026-11-08 | 20.9 | 190.39 | 138,849 | 138,848 | 662,820 | 10,079 |
| 2 days ago | 2026-11-07 | 20.9 | 190.37 | 138,648 | 138,647 | 662,820 | 10,071 |
| 1 week ago | 2026-11-02 | 21.0 | 190.43 | 139,253 | 139,252 | 662,820 | 10,095 |
| 1 month ago | 2026-10-09 | 21.8 | 190.94 | 144,453 | 144,452 | 662,820 | 10,301 |
| 3 months ago | 2026-08-09 | 24.6 | 192.70 | 163,203 | 163,202 | 662,820 | 11,013 |
| 6 months ago | 2026-05-09 | 7.4 | 178.58 | 49,042 | 49,041 | 662,820 | 5,140 |
| 1 year ago | 2025-11-09 | 10.4 | 181.98 | 68,884 | 68,883 | 662,820 | 6,534 |
*
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 | 2026-11-09 17:15 | 190.60 | 220.50 | -29.90 |
| 1 hour prior | 2026-11-09 16:15 | 190.61 | 220.50 | -29.89 |
| 2 hours prior | 2026-11-09 15:15 | 190.60 | 220.50 | -29.90 |
| 6 hours prior | 2026-11-09 11:15 | 190.56 | 220.50 | -29.94 |
| 12 hours prior | 2026-11-09 05:15 | 190.43 | 220.50 | -30.07 |
| 24 hours prior | 2026-11-08 17:15 | 190.40 | 220.50 | -30.10 |
| 48 hours prior | 2026-11-07 17:15 | 190.36 | 220.50 | -30.14 |
*
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
