Lake Corpus Christi: 67.2% full as of 2017-09-21

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 2017-09-21 67.2 89.41 172,339 172,061 256,062 16,576
Yesterday 2017-09-20 67.2 89.41 172,339 172,061 256,062 16,576
2 days ago 2017-09-19 67.6 89.48 173,501 173,223 256,062 16,635
1 week ago 2017-09-14 68.4 89.59 175,336 175,058 256,062 16,728
1 month ago 2017-08-21 71.0 89.99 182,095 181,817 256,062 17,067
3 months ago 2017-06-21 83.5 91.79 214,142 213,864 256,062 18,440
6 months ago 2017-03-21 95.8 93.45 245,567 245,289 256,062 19,423
1 year ago 2016-09-21 79.9 91.28 204,815 204,537 256,062 18,138
*

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 2017-09-21 16:00 89.33 94.0 -4.7 below flood pool
1 hour prior 2017-09-21 15:00 89.38 94.0 -4.6 below flood pool
2 hours prior 2017-09-21 14:00 89.40 94.0 -4.6 below flood pool
6 hours prior 2017-09-21 10:00 89.37 94.0 -4.6 below flood pool
12 hours prior 2017-09-21 04:00 89.42 94.0 -4.6 below flood pool
24 hours prior 2017-09-20 16:00 89.42 94.0 -4.6 below flood pool
48 hours prior 2017-09-19 16:00 89.44 94.0 -4.6 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1958-01-01
Vertical datum NGVD29
Gauge USGS:08210500
Dead pool elevation 55.5 ft above NGVD29
Service spillway crest elevation 93.8 ft above NGVD29
Top of flood gate elevation 93.8 ft above NGVD29
Top of flood gate elevation 94.3 ft above NGVD29
Emergency spillway crest elevation 88.0 ft above NGVD29
Top of dam elevation 106.0 ft above NGVD29
Conservation pool elevation 94.0 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1958-01-01 (source: usgs)
2002-01-01 (source: twdb) : GIS Data
2012-05-01 (source: twdb) : GIS Data
2016-02-01 (source: twdb) : GIS Data

Lake Location