Canyon Lake: 97.1% full as of 2026-10-18
Historical Data
| Date | Percent Full |
Mean Water Level (ft) |
Reservoir Storage (acre-ft) |
Conservation Storage (acre-ft) |
Conservation Capacity (acre-ft) |
Surface Area (acres) |
|
|---|---|---|---|---|---|---|---|
| Most recent | 2026-10-18 | 97.1 | 907.66 | 367,919 | 367,848 | 378,781 | 8,082 |
| 1 day prior | 2026-10-17 | 97.2 | 907.70 | 368,242 | 368,171 | 378,781 | 8,087 |
| 2 days prior | 2026-10-16 | 97.3 | 907.77 | 368,809 | 368,738 | 378,781 | 8,095 |
| 1 week prior | 2026-10-11 | 97.7 | 907.92 | 370,024 | 369,953 | 378,781 | 8,112 |
| 1 month prior | 2026-09-18 | 98.8 | 908.45 | 374,340 | 374,269 | 378,781 | 8,173 |
| 3 months prior | 2026-07-18 | 96.8 | 907.51 | 366,708 | 366,637 | 378,781 | 8,065 |
| 6 months prior | 2026-04-18 | 58.3 | 886.34 | 221,044 | 220,973 | 378,781 | 5,781 |
| 1 year prior | 2025-10-18 | 65.3 | 890.74 | 247,449 | 247,378 | 378,781 | 6,223 |
*
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 | 2026-10-18 23:15 | 907.63 | 909.00 | -1.37 |
| 1 hour prior | 2026-10-18 22:15 | 907.65 | 909.00 | -1.35 |
| 2 hours prior | 2026-10-18 21:15 | 907.65 | 909.00 | -1.35 |
| 6 hours prior | 2026-10-18 17:15 | 907.65 | 909.00 | -1.35 |
| 12 hours prior | 2026-10-18 11:15 | 907.67 | 909.00 | -1.33 |
| 24 hours prior | 2026-10-17 23:15 | 907.67 | 909.00 | -1.33 |
| 48 hours prior | 2026-10-16 23:15 | 907.72 | 909.00 | -1.28 |
*
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
