Lake Nacogdoches: 90.6% full as of 2026-08-15
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 | 2026-08-15 | 90.6 | 277.24 | 35,822 | 35,820 | 39,522 | 2,027 |
| Yesterday | 2026-08-14 | 90.7 | 277.26 | 35,862 | 35,860 | 39,522 | 2,029 |
| 2 days ago | 2026-08-13 | 90.9 | 277.30 | 35,944 | 35,942 | 39,522 | 2,032 |
| 1 week ago | 2026-08-08 | 91.5 | 277.41 | 36,168 | 36,166 | 39,522 | 2,041 |
| 1 month ago | 2026-07-15 | 95.2 | 278.12 | 37,638 | 37,636 | 39,522 | 2,101 |
| 3 months ago | 2026-05-15 | 96.8 | 278.42 | 38,272 | 38,270 | 39,522 | 2,129 |
| 6 months ago | 2026-02-15 | 93.6 | 277.82 | 37,011 | 37,009 | 39,522 | 2,075 |
| 1 year ago | 2025-08-15 | 95.6 | 278.19 | 37,785 | 37,783 | 39,522 | 2,108 |
*
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 | 2026-08-15 19:45 | 277.22 | 279.00 | -1.78 |
| 1 hour prior | 2026-08-15 18:45 | 277.22 | 279.00 | -1.78 |
| 2 hours prior | 2026-08-15 17:45 | 277.22 | 279.00 | -1.78 |
| 6 hours prior | 2026-08-15 13:45 | 277.23 | 279.00 | -1.77 |
| 12 hours prior | 2026-08-15 07:45 | 277.24 | 279.00 | -1.76 |
| 24 hours prior | 2026-08-14 19:45 | 277.25 | 279.00 | -1.75 |
| 48 hours prior | 2026-08-13 19:45 | 277.29 | 279.00 | -1.71 |
*
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 |
| Data Source | USGS:08036700 |
| USGS Monitoring Location | USGS:08036700 |
Lake Location
