Lake Tawakoni: 93.0% full as of 2026-09-10
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 | 2026-09-10 | 93.0 | 435.82 | 811,003 | 810,995 | 871,685 | 35,369 |
| Yesterday | 2026-09-09 | 93.2 | 435.85 | 812,065 | 812,057 | 871,685 | 35,393 |
| 2 days ago | 2026-09-08 | 93.3 | 435.89 | 813,481 | 813,473 | 871,685 | 35,425 |
| 1 week ago | 2026-09-03 | 93.7 | 435.99 | 817,028 | 817,020 | 871,685 | 35,507 |
| 1 month ago | 2026-08-10 | 97.0 | 436.78 | 845,348 | 845,340 | 871,685 | 36,208 |
| 3 months ago | 2026-06-10 | 100.0 | 438.07 | 892,944 | 871,685 | 871,685 | - n.a. - |
| 6 months ago | 2026-03-10 | 96.0 | 436.55 | 837,046 | 837,038 | 871,685 | 35,992 |
| 1 year ago | 2025-09-10 | 97.9 | 436.99 | 852,973 | 852,965 | 871,685 | 36,417 |
*
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 | 2026-09-10 21:15 | 435.78 | 437.50 | -1.72 |
| 1 hour prior | 2026-09-10 20:15 | 435.82 | 437.50 | -1.68 |
| 2 hours prior | 2026-09-10 19:15 | 435.77 | 437.50 | -1.73 |
| 6 hours prior | 2026-09-10 15:15 | 435.82 | 437.50 | -1.68 |
| 12 hours prior | 2026-09-10 09:15 | 435.82 | 437.50 | -1.68 |
| 24 hours prior | 2026-09-09 21:15 | 435.84 | 437.50 | -1.66 |
| 48 hours prior | 2026-09-08 21:15 | 435.88 | 437.50 | -1.62 |
*
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
