Choke Canyon Reservoir: 21.7% full as of 2026-10-10
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 | 2026-10-10 | 21.7 | 190.91 | 144,144 | 144,143 | 662,820 | 10,289 |
| Yesterday | 2026-10-09 | 21.8 | 190.94 | 144,453 | 144,452 | 662,820 | 10,301 |
| 2 days ago | 2026-10-08 | 21.8 | 190.96 | 144,659 | 144,658 | 662,820 | 10,309 |
| 1 week ago | 2026-10-03 | 22.0 | 191.08 | 145,899 | 145,898 | 662,820 | 10,358 |
| 1 month ago | 2026-09-10 | 22.9 | 191.63 | 151,656 | 151,655 | 662,820 | 10,576 |
| 3 months ago | 2026-07-10 | 8.2 | 179.58 | 54,384 | 54,383 | 662,820 | 5,547 |
| 6 months ago | 2026-04-10 | 7.5 | 178.72 | 49,766 | 49,765 | 662,820 | 5,194 |
| 1 year ago | 2025-10-10 | 11.2 | 182.81 | 74,459 | 74,458 | 662,820 | 6,888 |
*
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 | 2026-10-10 10:15 | 190.92 | 220.50 | -29.58 |
| 1 hour prior | 2026-10-10 09:15 | 190.91 | 220.50 | -29.59 |
| 2 hours prior | 2026-10-10 08:15 | 190.91 | 220.50 | -29.59 |
| 6 hours prior | 2026-10-10 04:15 | 190.91 | 220.50 | -29.59 |
| 12 hours prior | 2026-10-09 22:15 | 190.92 | 220.50 | -29.58 |
| 24 hours prior | 2026-10-09 10:15 | 190.94 | 220.50 | -29.56 |
| 48 hours prior | 2026-10-08 10:15 | 190.96 | 220.50 | -29.54 |
*
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
