Lake Nacogdoches: 91.8% full as of 2026-08-06

Historical Data

Date Percent Full Mean Water Level
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Most recent 2026-08-06 91.8 277.47 36,290 36,288 39,522 2,046
1 day prior 2026-08-05 91.9 277.49 36,331 36,329 39,522 2,047
2 days prior 2026-08-04 92.1 277.53 36,413 36,411 39,522 2,051
1 week prior 2026-07-30 93.1 277.71 36,784 36,782 39,522 2,065
1 month prior 2026-07-06 96.0 278.27 37,954 37,952 39,522 2,115
3 months prior 2026-05-06 97.8 278.60 38,657 38,655 39,522 2,146
6 months prior 2026-02-06 92.9 277.68 36,722 36,720 39,522 2,063
1 year prior 2025-08-06 96.5 278.35 38,123 38,121 39,522 2,122
*

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 2026-08-06 23:45 277.44 279.00 -1.56
1 hour prior 2026-08-06 22:45 277.44 279.00 -1.56
2 hours prior 2026-08-06 21:45 277.45 279.00 -1.55
6 hours prior 2026-08-06 17:45 277.46 279.00 -1.54
12 hours prior 2026-08-06 11:45 277.47 279.00 -1.53
24 hours prior 2026-08-05 23:45 277.47 279.00 -1.53
48 hours prior 2026-08-04 23:45 277.51 279.00 -1.49
*

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
USGS Monitoring Location USGS:08036700

Lake Location