Choke Canyon Reservoir: 21.0% full as of 2026-10-31
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 | 2026-10-31 | 21.0 | 190.41 | 139,051 | 139,050 | 662,820 | 10,087 |
| Yesterday | 2026-10-30 | 21.0 | 190.41 | 139,051 | 139,050 | 662,820 | 10,087 |
| 2 days ago | 2026-10-29 | 21.1 | 190.46 | 139,556 | 139,555 | 662,820 | 10,106 |
| 1 week ago | 2026-10-24 | 21.2 | 190.57 | 140,670 | 140,669 | 662,820 | 10,149 |
| 1 month ago | 2026-09-30 | 21.9 | 191.04 | 145,485 | 145,484 | 662,820 | 10,341 |
| 3 months ago | 2026-07-31 | 24.9 | 192.89 | 165,304 | 165,303 | 662,820 | 11,098 |
| 6 months ago | 2026-04-30 | 7.3 | 178.41 | 48,174 | 48,173 | 662,820 | 5,072 |
| 1 year ago | 2025-10-31 | 10.6 | 182.23 | 70,532 | 70,531 | 662,820 | 6,646 |
*
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 | 2026-10-31 04:15 | 190.41 | 220.50 | -30.09 |
| 1 hour prior | 2026-10-31 03:15 | 190.41 | 220.50 | -30.09 |
| 2 hours prior | 2026-10-31 02:15 | 190.41 | 220.50 | -30.09 |
| 6 hours prior | 2026-10-30 22:15 | 190.41 | 220.50 | -30.09 |
| 12 hours prior | 2026-10-30 16:15 | 190.40 | 220.50 | -30.10 |
| 24 hours prior | 2026-10-30 04:15 | 190.45 | 220.50 | -30.05 |
| 48 hours prior | 2026-10-29 04:15 | 190.48 | 220.50 | -30.02 |
*
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
