Choke Canyon Reservoir: 24.5% full as of 2026-08-12
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 | 2026-08-12 | 24.5 | 192.62 | 162,324 | 162,323 | 662,820 | 10,979 |
| Yesterday | 2026-08-11 | 24.5 | 192.65 | 162,653 | 162,652 | 662,820 | 10,992 |
| 2 days ago | 2026-08-10 | 24.6 | 192.68 | 162,983 | 162,982 | 662,820 | 11,004 |
| 1 week ago | 2026-08-05 | 24.8 | 192.81 | 164,417 | 164,416 | 662,820 | 11,062 |
| 1 month ago | 2026-07-12 | 8.2 | 179.52 | 54,052 | 54,051 | 662,820 | 5,522 |
| 3 months ago | 2026-05-12 | 7.3 | 178.51 | 48,683 | 48,682 | 662,820 | 5,112 |
| 6 months ago | 2026-02-12 | 8.7 | 180.20 | 57,905 | 57,904 | 662,820 | 5,807 |
| 1 year ago | 2025-08-12 | 12.6 | 184.05 | 83,305 | 83,304 | 662,820 | 7,380 |
*
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 | 2026-08-12 06:15 | 192.63 | 220.50 | -27.87 |
| 1 hour prior | 2026-08-12 05:15 | 192.62 | 220.50 | -27.88 |
| 2 hours prior | 2026-08-12 04:15 | 192.63 | 220.50 | -27.87 |
| 6 hours prior | 2026-08-12 00:15 | 192.62 | 220.50 | -27.88 |
| 12 hours prior | 2026-08-11 18:15 | 192.62 | 220.50 | -27.88 |
| 24 hours prior | 2026-08-11 06:15 | 192.67 | 220.50 | -27.83 |
| 48 hours prior | 2026-08-10 06:15 | 192.68 | 220.50 | -27.82 |
*
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
