Choke Canyon Reservoir: 22.3% full as of 2026-09-24
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 | 2026-09-24 | 22.3 | 191.24 | 147,562 | 147,561 | 662,820 | 10,422 |
| Yesterday | 2026-09-23 | 22.3 | 191.26 | 147,770 | 147,769 | 662,820 | 10,429 |
| 2 days ago | 2026-09-22 | 22.3 | 191.29 | 148,083 | 148,082 | 662,820 | 10,441 |
| 1 week ago | 2026-09-17 | 22.5 | 191.40 | 149,234 | 149,233 | 662,820 | 10,486 |
| 1 month ago | 2026-08-24 | 23.7 | 192.16 | 157,318 | 157,317 | 662,820 | 10,788 |
| 3 months ago | 2026-06-24 | 8.7 | 180.12 | 57,442 | 57,441 | 662,820 | 5,774 |
| 6 months ago | 2026-03-24 | 7.9 | 179.20 | 52,306 | 52,305 | 662,820 | 5,391 |
| 1 year ago | 2025-09-24 | 11.3 | 182.91 | 75,150 | 75,149 | 662,820 | 6,926 |
*
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 | 2026-09-24 10:15 | 191.21 | 220.50 | -29.29 |
| 1 hour prior | 2026-09-24 09:15 | 191.22 | 220.50 | -29.28 |
| 2 hours prior | 2026-09-24 08:15 | - n.a. - | - n.a. - | - n.a. - |
| 6 hours prior | 2026-09-24 04:15 | 191.21 | 220.50 | -29.29 |
| 12 hours prior | 2026-09-23 22:15 | 191.24 | 220.50 | -29.26 |
| 24 hours prior | 2026-09-23 10:15 | 191.28 | 220.50 | -29.22 |
| 48 hours prior | 2026-09-22 10:15 | 191.30 | 220.50 | -29.20 |
*
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
