Canyon Lake: 100.0% full as of 2026-08-23
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 | 2026-08-23 | 100.0 | 909.47 | 382,736 | 378,781 | 378,781 | - n.a. - |
| Yesterday | 2026-08-22 | 100.0 | 909.49 | 382,902 | 378,781 | 378,781 | - n.a. - |
| 2 days ago | 2026-08-21 | 100.0 | 909.53 | 383,234 | 378,781 | 378,781 | - n.a. - |
| 1 week ago | 2026-08-16 | 100.0 | 909.76 | 385,146 | 378,781 | 378,781 | - n.a. - |
| 1 month ago | 2026-07-23 | 100.0 | 909.46 | 382,653 | 378,781 | 378,781 | - n.a. - |
| 3 months ago | 2026-05-23 | 58.8 | 886.61 | 222,608 | 222,537 | 378,781 | 5,808 |
| 6 months ago | 2026-02-23 | 60.4 | 887.68 | 228,880 | 228,809 | 378,781 | 5,915 |
| 1 year ago | 2025-08-23 | 68.0 | 892.38 | 257,792 | 257,721 | 378,781 | 6,389 |
*
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 | 2026-08-23 17:15 | 909.46 | 909.00 | 0.46 |
| 1 hour prior | 2026-08-23 16:15 | 909.46 | 909.00 | 0.46 |
| 2 hours prior | 2026-08-23 15:15 | 909.46 | 909.00 | 0.46 |
| 6 hours prior | 2026-08-23 11:15 | 909.46 | 909.00 | 0.46 |
| 12 hours prior | 2026-08-23 05:15 | 909.47 | 909.00 | 0.47 |
| 24 hours prior | 2026-08-22 17:15 | 909.48 | 909.00 | 0.48 |
| 48 hours prior | 2026-08-21 17:15 | 909.53 | 909.00 | 0.53 |
*
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
