Canyon Lake: 84.8% full as of 2022-10-02

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 2022-10-02 84.8 901.62 321,259 321,188 378,781 7,368
Yesterday 2022-10-01 84.9 901.65 321,480 321,409 378,781 7,371
2 days ago 2022-09-30 85.0 901.70 321,849 321,778 378,781 7,377
1 week ago 2022-09-25 85.5 901.96 323,771 323,700 378,781 7,406
1 month ago 2022-09-02 86.9 902.69 329,207 329,136 378,781 7,490
3 months ago 2022-07-02 92.6 905.50 350,731 350,660 378,781 7,830
6 months ago 2022-04-02 97.4 907.81 369,132 369,061 378,781 8,099
1 year ago 2021-10-02 93.7 906.06 355,135 355,064 378,781 7,896
*

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 2022-10-02 10:15 901.62 909.00 -7.38 below flood pool
1 hour prior 2022-10-02 09:15 901.62 909.00 -7.38 below flood pool
2 hours prior 2022-10-02 08:15 901.62 909.00 -7.38 below flood pool
6 hours prior 2022-10-02 04:15 901.62 909.00 -7.38 below flood pool
12 hours prior 2022-10-01 22:15 901.64 909.00 -7.36 below flood pool
24 hours prior 2022-10-01 10:15 901.66 909.00 -7.34 below flood pool
48 hours prior 2022-09-30 10:15 901.71 909.00 -7.29 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1964-01-01
Gauge USGS:08167700
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

Lake Location