Notes

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

Toledo Bend Reservoir: 91.7% full as of 2023-03-28

Toledo Bend Reservoir straddles the border of Texas and Louisiana, Texas has rights to 50% of Toledo Bend Reservoir'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 2023-03-28 91.7 169.74 4,107,865 2,051,882 2,236,450 171,590
Yesterday 2023-03-27 91.6 169.71 4,102,761 2,049,330 2,236,450 171,448
2 days ago 2023-03-26 91.2 169.60 4,084,061 2,039,980 2,236,450 170,927
1 week ago 2023-03-21 92.1 169.84 4,124,817 2,060,358 2,236,450 172,067
1 month ago 2023-02-28 95.1 170.64 4,258,590 2,127,245 2,236,450 175,935
3 months ago 2022-12-28 85.3 167.99 3,817,750 1,906,825 2,236,450 163,448
6 months ago 2022-09-28 84.1 167.68 3,767,986 1,881,943 2,236,450 161,997
1 year ago 2022-03-28 95.0 170.61 4,253,369 2,124,634 2,236,450 175,787
*

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 2023-03-28 13:00 169.81 172.00 -2.19
1 hour prior 2023-03-28 12:00 169.80 172.00 -2.20
2 hours prior 2023-03-28 11:00 169.81 172.00 -2.19
6 hours prior 2023-03-28 07:00 169.79 172.00 -2.21
12 hours prior 2023-03-28 01:00 169.71 172.00 -2.29
24 hours prior 2023-03-27 13:00 169.71 172.00 -2.29
48 hours prior 2023-03-26 13:00 169.54 172.00 -2.46
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1969-01-01
Gauge USGS:08025350
Vertical datum NGVD29
Dead pool elevation 100.00 ft above NGVD29
Service spillway crest elevation 145.00 ft above NGVD29
Top of flood gate elevation 173.00 ft above NGVD29
Emergency spillway crest elevation 173.00 ft above NGVD29
Maximum design elevation 175.30 ft above NGVD29
Top of dam elevation 185.00 ft above NGVD29
Conservation pool elevation 172.00 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