Recent changes

2013-02-12: The rating curve for Caddo Reservoir has been updated and replaced with data from the Texas Water Development Board's Report 126.

Caddo Lake: 100.0% full as of 2018-02-22

Caddo Lake straddles the border of Texas and Louisiana, Texas has rights to 50% of Lake Caddo's total conservation capacity. Percent full, conservation storage and conservation capacity are based on the Texas share. 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 2018-02-22 100.0 170.36 180,815 29,898 29,898 30,810
Yesterday 2018-02-21 100.0 169.94 167,018 29,898 29,898 29,950
2 days ago 2018-02-20 100.0 169.77 161,908 29,898 29,898 29,575
1 week ago 2018-02-15 - n.a. - - n.a. - - n.a. - - n.a. - - n.a. - - n.a. -
1 month ago 2018-01-22 100.0 169.19 145,352 29,898 29,898 28,259
3 months ago 2017-11-22 89.8 168.31 122,927 26,861 29,898 26,265
6 months ago 2017-08-22 100.0 168.92 138,293 29,898 29,898 27,648
1 year ago 2017-02-22 27.1 166.76 85,410 8,102 29,898 22,518
*

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 2018-02-22 06:00 170.43 168.5 1.9 into flood pool
1 hour prior 2018-02-22 05:00 170.42 168.5 1.9 into flood pool
2 hours prior 2018-02-22 04:00 170.40 168.5 1.9 into flood pool
6 hours prior 2018-02-22 00:00 170.23 168.5 1.7 into flood pool
12 hours prior 2018-02-21 18:00 170.24 168.5 1.7 into flood pool
24 hours prior 2018-02-21 06:00 169.76 168.5 1.3 into flood pool
48 hours prior 2018-02-20 06:00 169.79 168.5 1.3 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1971-01-01
Vertical datum NGVD29
Gauge USGS:07346310
Dead pool elevation 166.0 ft above NGVD29
Service spillway crest elevation 168.5 ft above NGVD29
Emergency spillway crest elevation 170.5 ft above NGVD29
Top of dam elevation 176.0 ft above NGVD29
Conservation pool elevation 168.5 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1974-10-01 (source: twdb)

Lake Location