Choke Canyon Reservoir: 22.6% full as of 2026-09-16
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 | 2026-09-16 | 22.6 | 191.43 | 149,549 | 149,548 | 662,820 | 10,498 |
| Yesterday | 2026-09-15 | 22.6 | 191.45 | 149,759 | 149,758 | 662,820 | 10,506 |
| 2 days ago | 2026-09-14 | 22.6 | 191.48 | 150,074 | 150,073 | 662,820 | 10,517 |
| 1 week ago | 2026-09-09 | 22.9 | 191.65 | 151,868 | 151,867 | 662,820 | 10,584 |
| 1 month ago | 2026-08-16 | 24.2 | 192.44 | 160,355 | 160,354 | 662,820 | 10,902 |
| 3 months ago | 2026-06-16 | 8.4 | 179.76 | 55,390 | 55,389 | 662,820 | 5,624 |
| 6 months ago | 2026-03-16 | 8.1 | 179.46 | 53,722 | 53,721 | 662,820 | 5,497 |
| 1 year ago | 2025-09-16 | 11.5 | 183.04 | 76,054 | 76,053 | 662,820 | 6,977 |
*
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 | 2026-09-16 03:15 | 191.43 | 220.50 | -29.07 |
| 1 hour prior | 2026-09-16 02:15 | 191.44 | 220.50 | -29.06 |
| 2 hours prior | 2026-09-16 01:15 | 191.43 | 220.50 | -29.07 |
| 6 hours prior | 2026-09-15 21:15 | 191.41 | 220.50 | -29.09 |
| 12 hours prior | 2026-09-15 15:15 | 191.45 | 220.50 | -29.05 |
| 24 hours prior | 2026-09-15 03:15 | 191.47 | 220.50 | -29.03 |
| 48 hours prior | 2026-09-14 03:15 | 191.50 | 220.50 | -29.00 |
*
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
