Canyon Lake: 100.0% full as of 2016-12-06

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, while 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 2016-12-06 100.0 909.38 381,991 378,781 378,781 - n.a. -
Yesterday 2016-12-05 100.0 909.30 381,328 378,781 378,781 - n.a. -
2 days ago 2016-12-04 100.0 909.15 380,089 378,781 378,781 - n.a. -
1 week ago 2016-11-29 99.8 908.90 378,029 377,958 378,781 8,225
1 month ago 2016-11-06 99.9 908.94 378,358 378,287 378,781 8,258
3 months ago 2016-09-06 100.0 909.27 381,080 378,781 378,781 - n.a. -
6 months ago 2016-06-06 100.0 919.80 474,537 378,781 378,781 - n.a. -
1 year ago 2015-12-06 100.0 909.65 384,231 378,781 378,781 - n.a. -
*

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 2016-12-06 05:15 909.40 909.0 0.4 into flood pool
1 hour prior 2016-12-06 04:15 909.39 909.0 0.4 into flood pool
2 hours prior 2016-12-06 03:15 909.39 909.0 0.4 into flood pool
6 hours prior 2016-12-05 23:15 909.36 909.0 0.4 into flood pool
12 hours prior 2016-12-05 17:15 909.32 909.0 0.3 into flood pool
24 hours prior 2016-12-05 05:15 909.27 909.0 0.3 into flood pool
48 hours prior 2016-12-04 05:15 909.13 909.0 0.1 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1964-01-01
Vertical datum NGVD29
Gauge USGS:08167700
Dead pool elevation 775.0 ft above NGVD29
Service spillway crest elevation 943 ft above NGVD29
Conservation pool elevation 909.0 ft above NGVD29
Emergency spillway crest elevation 943 ft above NGVD29
Flood pool elevation 943 ft above NGVD29
Maximum design elevation 969.1 ft above NGVD29
Top of dam elevation 974 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