Canyon Lake: 58.1% full as of 2024-05-19

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

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 2024-05-19 58.1 886.17 220,062 219,991 378,781 5,764
Yesterday 2024-05-18 58.1 886.19 220,178 220,107 378,781 5,766
2 days ago 2024-05-17 58.2 886.23 220,408 220,337 378,781 5,770
1 week ago 2024-05-12 58.4 886.36 221,159 221,088 378,781 5,783
1 month ago 2024-04-19 59.0 886.80 223,713 223,642 378,781 5,827
3 months ago 2024-02-19 60.5 887.73 229,176 229,105 378,781 5,920
6 months ago 2023-11-19 62.4 888.95 236,472 236,401 378,781 6,042
1 year ago 2023-05-19 76.4 897.16 289,500 289,429 378,781 6,881
*

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 2024-05-19 18:15 886.14 909.00 -22.86 below flood pool
1 hour prior 2024-05-19 17:15 886.16 909.00 -22.84 below flood pool
2 hours prior 2024-05-19 16:15 886.16 909.00 -22.84 below flood pool
6 hours prior 2024-05-19 12:15 886.16 909.00 -22.84 below flood pool
12 hours prior 2024-05-19 06:15 886.17 909.00 -22.83 below flood pool
24 hours prior 2024-05-18 18:15 886.18 909.00 -22.82 below flood pool
48 hours prior 2024-05-17 18:15 886.22 909.00 -22.78 below flood pool
*

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

Lake Location