Lake Nacogdoches: 84.9% full as of 2026-09-30
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 | 2026-09-30 | 84.9 | 276.10 | 33,564 | 33,562 | 39,522 | 1,937 |
| 1 day prior | 2026-09-29 | 85.1 | 276.13 | 33,623 | 33,621 | 39,522 | 1,939 |
| 2 days prior | 2026-09-28 | 85.2 | 276.16 | 33,681 | 33,679 | 39,522 | 1,941 |
| 1 week prior | 2026-09-23 | 86.0 | 276.31 | 33,973 | 33,971 | 39,522 | 1,953 |
| 1 month prior | 2026-08-30 | 88.1 | 276.75 | 34,839 | 34,837 | 39,522 | 1,985 |
| 3 months prior | 2026-06-30 | 96.7 | 278.39 | 38,208 | 38,206 | 39,522 | 2,126 |
| 6 months prior | 2026-03-30 | 97.2 | 278.48 | 38,400 | 38,398 | 39,522 | 2,135 |
| 1 year prior | 2025-09-30 | 94.1 | 277.91 | 37,198 | 37,196 | 39,522 | 2,083 |
*
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 | 2026-09-30 23:45 | 276.08 | 279.00 | -2.92 |
| 1 hour prior | 2026-09-30 22:45 | 276.08 | 279.00 | -2.92 |
| 2 hours prior | 2026-09-30 21:45 | 276.08 | 279.00 | -2.92 |
| 6 hours prior | 2026-09-30 17:45 | 276.08 | 279.00 | -2.92 |
| 12 hours prior | 2026-09-30 11:45 | 276.10 | 279.00 | -2.90 |
| 24 hours prior | 2026-09-29 23:45 | 276.11 | 279.00 | -2.89 |
| 48 hours prior | 2026-09-28 23:45 | 276.14 | 279.00 | -2.86 |
*
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
