Lake Nacogdoches: 100.0% full as of 2020-02-22

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 2020-02-22 100.0 280.85 43,731 39,522 39,522 - n.a. -
Yesterday 2020-02-21 100.0 281.30 44,804 39,522 39,522 - n.a. -
2 days ago 2020-02-20 100.0 280.76 43,519 39,522 39,522 - n.a. -
1 week ago 2020-02-15 100.0 279.48 40,583 39,522 39,522 - n.a. -
1 month ago 2020-01-22 91.5 277.40 36,147 36,145 39,522 2,040
3 months ago 2019-11-22 89.0 276.91 35,158 35,156 39,522 1,997
6 months ago 2019-08-22 91.6 277.42 36,188 36,186 39,522 2,042
1 year ago 2019-02-22 99.8 278.96 39,436 39,434 39,522 2,198
*

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 2020-02-22 09:45 280.68 279.00 1.68 into flood pool
1 hour prior 2020-02-22 08:45 280.70 279.00 1.70 into flood pool
2 hours prior 2020-02-22 07:45 280.73 279.00 1.73 into flood pool
6 hours prior 2020-02-22 03:45 280.83 279.00 1.83 into flood pool
12 hours prior 2020-02-21 21:45 281.00 279.00 2.00 into flood pool
24 hours prior 2020-02-21 09:45 281.37 279.00 2.37 into flood pool
48 hours prior 2020-02-20 09:45 280.57 279.00 1.57 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1977-01-01
Vertical datum NGVD29
Gauge USGS:08036700
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

Lake Location