Lake Nacogdoches: 87.1% full as of 2026-09-14
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 | 2026-09-14 | 87.1 | 276.55 | 34,444 | 34,442 | 39,522 | 1,971 |
| 1 day prior | 2026-09-13 | 87.3 | 276.58 | 34,503 | 34,501 | 39,522 | 1,973 |
| 2 days prior | 2026-09-12 | 87.4 | 276.61 | 34,562 | 34,560 | 39,522 | 1,975 |
| 1 week prior | 2026-09-07 | 88.1 | 276.75 | 34,839 | 34,837 | 39,522 | 1,985 |
| 1 month prior | 2026-08-14 | 90.7 | 277.26 | 35,862 | 35,860 | 39,522 | 2,029 |
| 3 months prior | 2026-06-14 | 96.5 | 278.35 | 38,123 | 38,121 | 39,522 | 2,122 |
| 6 months prior | 2026-03-14 | 98.2 | 278.67 | 38,807 | 38,805 | 39,522 | 2,153 |
| 1 year prior | 2025-09-14 | 93.4 | 277.77 | 36,908 | 36,906 | 39,522 | 2,071 |
*
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 | 2026-09-15 03:45 | 276.53 | 279.00 | -2.47 |
| 1 hour prior | 2026-09-15 02:45 | 276.53 | 279.00 | -2.47 |
| 2 hours prior | 2026-09-15 01:45 | 276.53 | 279.00 | -2.47 |
| 6 hours prior | 2026-09-14 21:45 | 276.53 | 279.00 | -2.47 |
| 12 hours prior | 2026-09-14 15:45 | 276.55 | 279.00 | -2.45 |
| 24 hours prior | 2026-09-14 03:45 | 276.57 | 279.00 | -2.43 |
| 48 hours prior | 2026-09-13 03:45 | 276.59 | 279.00 | -2.41 |
*
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
