Lake Tawakoni: 95.4% 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 | 95.4 | 436.40 | 831,656 | 831,648 | 871,685 | 35,856 |
| Yesterday | 2026-08-20 | 95.5 | 436.42 | 832,374 | 832,366 | 871,685 | 35,874 |
| 2 days ago | 2026-08-19 | 95.7 | 436.46 | 833,810 | 833,802 | 871,685 | 35,910 |
| 1 week ago | 2026-08-14 | 96.3 | 436.62 | 839,567 | 839,559 | 871,685 | 36,056 |
| 1 month ago | 2026-07-21 | 99.4 | 437.37 | 866,891 | 866,883 | 871,685 | 36,851 |
| 3 months ago | 2026-05-21 | 100.0 | 437.60 | 875,393 | 871,685 | 871,685 | - n.a. - |
| 6 months ago | 2026-02-21 | 94.8 | 436.26 | 826,646 | 826,638 | 871,685 | 35,734 |
| 1 year ago | 2025-08-21 | 97.9 | 437.01 | 853,702 | 853,694 | 871,685 | 36,438 |
*
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 20:15 | 436.39 | 437.50 | -1.11 |
| 1 hour prior | 2026-08-21 19:15 | 436.38 | 437.50 | -1.12 |
| 2 hours prior | 2026-08-21 18:15 | 436.39 | 437.50 | -1.11 |
| 6 hours prior | 2026-08-21 14:15 | 436.39 | 437.50 | -1.11 |
| 12 hours prior | 2026-08-21 08:15 | 436.39 | 437.50 | -1.11 |
| 24 hours prior | 2026-08-20 20:15 | 436.41 | 437.50 | -1.09 |
| 48 hours prior | 2026-08-19 20:15 | 436.44 | 437.50 | -1.06 |
*
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
