Lake Nacogdoches: 100.0% full as of 2024-05-21

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 2024-05-21 100.0 279.62 40,897 39,522 39,522 - n.a. -
Yesterday 2024-05-20 100.0 279.77 41,234 39,522 39,522 - n.a. -
2 days ago 2024-05-19 100.0 280.07 41,917 39,522 39,522 - n.a. -
1 week ago 2024-05-14 100.0 282.96 48,934 39,522 39,522 - n.a. -
1 month ago 2024-04-21 100.0 279.12 39,786 39,522 39,522 - n.a. -
3 months ago 2024-02-21 100.0 279.07 39,676 39,522 39,522 - n.a. -
6 months ago 2023-11-21 82.4 275.58 32,571 32,569 39,522 1,885
1 year ago 2023-05-21 100.0 279.09 39,720 39,522 39,522 - 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 2024-05-21 08:45 279.57 279.00 0.57
1 hour prior 2024-05-21 07:45 279.58 279.00 0.58
2 hours prior 2024-05-21 06:45 279.59 279.00 0.59
6 hours prior 2024-05-21 02:45 279.62 279.00 0.62
12 hours prior 2024-05-20 20:45 279.68 279.00 0.68
24 hours prior 2024-05-20 08:45 279.81 279.00 0.81
48 hours prior 2024-05-19 08:45 280.11 279.00 1.11
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1977-01-01
Vertical datum NGVD29
Dead pool elevation 235.90 ft above NGVD29
Service spillway crest elevation 279.00 ft above NGVD29
Emergency spillway crest elevation 286.10 ft above NGVD29
Maximum design elevation 298.50 ft above NGVD29
Top of dam elevation 303.00 ft above NGVD29
Conservation pool elevation 279.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1977-01-01 (source: USGS)
1994-03-01 (source: TWDB) : GIS Data
Data Source USGS:08036700

Lake Location