Lake Tawakoni: 91.5% full as of 2026-10-09
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 | 2026-10-09 | 91.5 | 435.44 | 797,620 | 797,612 | 871,685 | 35,077 |
| Yesterday | 2026-10-08 | 91.5 | 435.45 | 797,971 | 797,963 | 871,685 | 35,084 |
| 2 days ago | 2026-10-07 | 91.7 | 435.48 | 799,023 | 799,015 | 871,685 | 35,107 |
| 1 week ago | 2026-10-02 | 91.0 | 435.32 | 793,415 | 793,407 | 871,685 | 34,988 |
| 1 month ago | 2026-09-09 | 93.2 | 435.85 | 812,065 | 812,057 | 871,685 | 35,393 |
| 3 months ago | 2026-07-09 | 99.8 | 437.46 | 870,214 | 870,206 | 871,685 | 37,151 |
| 6 months ago | 2026-04-09 | 98.7 | 437.19 | 860,278 | 860,270 | 871,685 | 36,631 |
| 1 year ago | 2025-10-09 | 95.5 | 436.42 | 832,374 | 832,366 | 871,685 | 35,874 |
*
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 | 2026-10-09 04:15 | 435.43 | 437.50 | -2.07 |
| 1 hour prior | 2026-10-09 03:15 | 435.44 | 437.50 | -2.06 |
| 2 hours prior | 2026-10-09 02:15 | 435.43 | 437.50 | -2.07 |
| 6 hours prior | 2026-10-08 22:15 | 435.44 | 437.50 | -2.06 |
| 12 hours prior | 2026-10-08 16:15 | 435.45 | 437.50 | -2.05 |
| 24 hours prior | 2026-10-08 04:15 | 435.45 | 437.50 | -2.05 |
| 48 hours prior | 2026-10-07 04:15 | 435.48 | 437.50 | -2.02 |
*
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
