Lake Tyler: 92.9% full as of 2026-08-18
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 | 2026-08-18 | 92.9 | 374.27 | 72,187 | 66,976 | 72,073 | 4,477 |
| 1 day prior | 2026-08-17 | 93.2 | 374.31 | 72,366 | 67,155 | 72,073 | 4,485 |
| 2 days prior | 2026-08-16 | 93.4 | 374.34 | 72,501 | 67,290 | 72,073 | 4,491 |
| 1 week prior | 2026-08-11 | 94.5 | 374.52 | 73,312 | 68,101 | 72,073 | 4,527 |
| 1 month prior | 2026-07-18 | 98.9 | 375.21 | 76,486 | 71,275 | 72,073 | 4,674 |
| 3 months prior | 2026-05-18 | 97.4 | 374.98 | 75,417 | 70,206 | 72,073 | 4,623 |
| 6 months prior | 2026-02-18 | 96.2 | 374.79 | 74,542 | 69,331 | 72,073 | 4,582 |
| 1 year prior | 2025-08-18 | 97.6 | 375.01 | 75,555 | 70,344 | 72,073 | 4,629 |
*
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 | 2026-08-18 23:30 | 374.28 | 375.38 | -1.10 |
| 1 hour prior | 2026-08-18 22:30 | 374.25 | 375.38 | -1.13 |
| 2 hours prior | 2026-08-18 21:30 | 374.27 | 375.38 | -1.11 |
| 6 hours prior | 2026-08-18 17:30 | 374.24 | 375.38 | -1.14 |
| 12 hours prior | 2026-08-18 11:30 | 374.28 | 375.38 | -1.10 |
| 24 hours prior | 2026-08-17 23:30 | 374.30 | 375.38 | -1.08 |
| 48 hours prior | 2026-08-16 23:30 | 374.34 | 375.38 | -1.04 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1967-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 350.00 ft above NGVD29 |
| Service spillway crest elevation | 375.38 ft above NGVD29 |
| Top of dam elevation | 390.00 ft above NGVD29 |
| Conservation pool elevation | 375.38 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1967-01-01 (source: USGS)
1997-06-01 (source: TWDB)
: GIS Data
2013-01-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08034000 |
| USGS Monitoring Location | USGS:08034000 |
Lake Location
