Choke Canyon Reservoir: 24.9% full as of 2026-08-01
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 | 2026-08-01 | 24.9 | 192.89 | 165,304 | 165,303 | 662,820 | 11,098 |
| Yesterday | 2026-07-31 | 24.9 | 192.89 | 165,304 | 165,303 | 662,820 | 11,098 |
| 2 days ago | 2026-07-30 | 24.9 | 192.87 | 165,082 | 165,081 | 662,820 | 11,088 |
| 1 week ago | 2026-07-25 | 21.2 | 190.55 | 140,467 | 140,466 | 662,820 | 10,142 |
| 1 month ago | 2026-07-01 | 8.5 | 179.88 | 56,068 | 56,067 | 662,820 | 5,676 |
| 3 months ago | 2026-05-01 | 7.3 | 178.41 | 48,174 | 48,173 | 662,820 | 5,072 |
| 6 months ago | 2026-02-01 | 9.0 | 180.45 | 59,370 | 59,369 | 662,820 | 5,910 |
| 1 year ago | 2025-08-01 | 13.0 | 184.40 | 85,915 | 85,914 | 662,820 | 7,537 |
*
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 | 2026-08-01 09:15 | 192.89 | 220.50 | -27.61 |
| 1 hour prior | 2026-08-01 08:15 | 192.90 | 220.50 | -27.60 |
| 2 hours prior | 2026-08-01 07:15 | 192.89 | 220.50 | -27.61 |
| 6 hours prior | 2026-08-01 03:15 | 192.89 | 220.50 | -27.61 |
| 12 hours prior | 2026-07-31 21:15 | 192.88 | 220.50 | -27.62 |
| 24 hours prior | 2026-07-31 09:15 | 192.90 | 220.50 | -27.60 |
| 48 hours prior | 2026-07-30 09:15 | 192.87 | 220.50 | -27.63 |
*
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
