Canyon Lake: 99.6% full as of 2026-09-11
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 | 2026-09-11 | 99.6 | 908.80 | 377,207 | 377,136 | 378,781 | 8,213 |
| Yesterday | 2026-09-10 | 99.6 | 908.83 | 377,454 | 377,383 | 378,781 | 8,217 |
| 2 days ago | 2026-09-09 | 99.7 | 908.88 | 377,865 | 377,794 | 378,781 | 8,223 |
| 1 week ago | 2026-09-04 | 100.0 | 909.09 | 379,594 | 378,781 | 378,781 | - n.a. - |
| 1 month ago | 2026-08-11 | 100.0 | 910.04 | 387,481 | 378,781 | 378,781 | - n.a. - |
| 3 months ago | 2026-06-11 | 58.9 | 886.73 | 223,306 | 223,235 | 378,781 | 5,820 |
| 6 months ago | 2026-03-11 | 59.9 | 887.37 | 227,051 | 226,980 | 378,781 | 5,884 |
| 1 year ago | 2025-09-11 | 67.5 | 892.08 | 255,879 | 255,808 | 378,781 | 6,359 |
*
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 | 2026-09-11 22:15 | 908.77 | 909.00 | -0.23 |
| 1 hour prior | 2026-09-11 21:15 | 908.77 | 909.00 | -0.23 |
| 2 hours prior | 2026-09-11 20:15 | 908.79 | 909.00 | -0.21 |
| 6 hours prior | 2026-09-11 16:15 | 908.79 | 909.00 | -0.21 |
| 12 hours prior | 2026-09-11 10:15 | 908.80 | 909.00 | -0.20 |
| 24 hours prior | 2026-09-10 22:15 | 908.80 | 909.00 | -0.20 |
| 48 hours prior | 2026-09-09 22:15 | 908.84 | 909.00 | -0.16 |
*
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
