Lake Nacogdoches: 89.6% full as of 2026-08-21
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 | 2026-08-21 | 89.6 | 277.03 | 35,398 | 35,396 | 39,522 | 2,008 |
| Yesterday | 2026-08-20 | 89.7 | 277.06 | 35,459 | 35,457 | 39,522 | 2,010 |
| 2 days ago | 2026-08-19 | 89.9 | 277.09 | 35,519 | 35,517 | 39,522 | 2,013 |
| 1 week ago | 2026-08-14 | 90.7 | 277.26 | 35,862 | 35,860 | 39,522 | 2,029 |
| 1 month ago | 2026-07-21 | 94.6 | 278.01 | 37,407 | 37,405 | 39,522 | 2,091 |
| 3 months ago | 2026-05-21 | 96.5 | 278.36 | 38,145 | 38,143 | 39,522 | 2,123 |
| 6 months ago | 2026-02-21 | 94.0 | 277.89 | 37,157 | 37,155 | 39,522 | 2,081 |
| 1 year ago | 2025-08-21 | 95.4 | 278.15 | 37,701 | 37,699 | 39,522 | 2,104 |
*
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 | 2026-08-21 10:45 | 277.03 | 279.00 | -1.97 |
| 1 hour prior | 2026-08-21 09:45 | 277.02 | 279.00 | -1.98 |
| 2 hours prior | 2026-08-21 08:45 | 277.03 | 279.00 | -1.97 |
| 6 hours prior | 2026-08-21 04:45 | 277.03 | 279.00 | -1.97 |
| 12 hours prior | 2026-08-20 22:45 | 277.04 | 279.00 | -1.96 |
| 24 hours prior | 2026-08-20 10:45 | 277.06 | 279.00 | -1.94 |
| 48 hours prior | 2026-08-19 10:45 | 277.10 | 279.00 | -1.90 |
*
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
