Canyon Lake: 100.0% full as of 2026-08-11
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 | 2026-08-11 | 100.0 | 910.04 | 387,481 | 378,781 | 378,781 | - n.a. - |
| Yesterday | 2026-08-10 | 100.0 | 910.07 | 387,732 | 378,781 | 378,781 | - n.a. - |
| 2 days ago | 2026-08-09 | 100.0 | 910.11 | 388,066 | 378,781 | 378,781 | - n.a. - |
| 1 week ago | 2026-08-04 | 100.0 | 910.16 | 388,484 | 378,781 | 378,781 | - n.a. - |
| 1 month ago | 2026-07-11 | 60.9 | 887.98 | 230,659 | 230,588 | 378,781 | 5,945 |
| 3 months ago | 2026-05-11 | 58.9 | 886.72 | 223,248 | 223,177 | 378,781 | 5,819 |
| 6 months ago | 2026-02-11 | 60.7 | 887.85 | 229,887 | 229,816 | 378,781 | 5,932 |
| 1 year ago | 2025-08-11 | 68.5 | 892.64 | 259,456 | 259,385 | 378,781 | 6,415 |
*
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 | 2026-08-11 17:15 | 910.04 | 909.00 | 1.04 |
| 1 hour prior | 2026-08-11 16:15 | 910.04 | 909.00 | 1.04 |
| 2 hours prior | 2026-08-11 15:15 | 910.04 | 909.00 | 1.04 |
| 6 hours prior | 2026-08-11 11:15 | 910.04 | 909.00 | 1.04 |
| 12 hours prior | 2026-08-11 05:15 | 910.05 | 909.00 | 1.05 |
| 24 hours prior | 2026-08-10 17:15 | 910.05 | 909.00 | 1.05 |
| 48 hours prior | 2026-08-09 17:15 | 910.10 | 909.00 | 1.10 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1964-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 775.00 ft above NGVD29 |
| Service spillway crest elevation | 943.00 ft above NGVD29 |
| Emergency spillway crest elevation | 943.00 ft above NGVD29 |
| Flood pool elevation | 943.00 ft above NGVD29 |
| Maximum design elevation | 969.10 ft above NGVD29 |
| Top of dam elevation | 974.00 ft above NGVD29 |
| Conservation pool elevation | 909.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2000-11-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08167700 |
| USGS Monitoring Location | USGS:08167700 |
Lake Location
