Lake Tawakoni: 92.8% full as of 2026-09-13
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 | 2026-09-13 | 92.8 | 435.75 | 808,530 | 808,522 | 871,685 | 35,314 |
| Yesterday | 2026-09-12 | 92.9 | 435.78 | 809,589 | 809,581 | 871,685 | 35,338 |
| 2 days ago | 2026-09-11 | 92.9 | 435.79 | 809,942 | 809,934 | 871,685 | 35,345 |
| 1 week ago | 2026-09-06 | 93.6 | 435.96 | 815,964 | 815,956 | 871,685 | 35,482 |
| 1 month ago | 2026-08-13 | 96.5 | 436.66 | 841,011 | 841,003 | 871,685 | 36,094 |
| 3 months ago | 2026-06-13 | 100.0 | 437.97 | 889,190 | 871,685 | 871,685 | - n.a. - |
| 6 months ago | 2026-03-13 | 97.0 | 436.79 | 845,710 | 845,702 | 871,685 | 36,218 |
| 1 year ago | 2025-09-13 | 97.6 | 436.94 | 851,154 | 851,146 | 871,685 | 36,366 |
*
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 | 2026-09-13 19:15 | 435.73 | 437.50 | -1.77 |
| 1 hour prior | 2026-09-13 18:15 | 435.74 | 437.50 | -1.76 |
| 2 hours prior | 2026-09-13 17:15 | 435.74 | 437.50 | -1.76 |
| 6 hours prior | 2026-09-13 13:15 | 435.75 | 437.50 | -1.75 |
| 12 hours prior | 2026-09-13 07:15 | 435.76 | 437.50 | -1.74 |
| 24 hours prior | 2026-09-12 19:15 | 435.77 | 437.50 | -1.73 |
| 48 hours prior | 2026-09-11 19:15 | 435.78 | 437.50 | -1.72 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1960-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 378.00 ft above NGVD29 |
| Emergency spillway crest elevation | 437.50 ft above NGVD29 |
| Top of dam elevation | 454.00 ft above NGVD29 |
| Conservation pool elevation | 437.50 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
1960-01-01 (source: USGS)
2000-10-01 (source: USGS)
2009-08-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08017400 |
| USGS Monitoring Location | USGS:08017400 |
Lake Location
