Lake Tawakoni: 91.7% full as of 2026-10-04
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 | 2026-10-04 | 91.7 | 435.49 | 799,374 | 799,366 | 871,685 | 35,114 |
| Yesterday | 2026-10-03 | 91.4 | 435.41 | 796,567 | 796,559 | 871,685 | 35,054 |
| 2 days ago | 2026-10-02 | 91.0 | 435.32 | 793,415 | 793,407 | 871,685 | 34,988 |
| 1 week ago | 2026-09-27 | 90.8 | 435.26 | 791,318 | 791,310 | 871,685 | 34,944 |
| 1 month ago | 2026-09-04 | 93.8 | 436.01 | 817,738 | 817,730 | 871,685 | 35,523 |
| 3 months ago | 2026-07-04 | 100.0 | 437.57 | 874,283 | 871,685 | 871,685 | - n.a. - |
| 6 months ago | 2026-04-04 | 97.0 | 436.78 | 845,348 | 845,340 | 871,685 | 36,208 |
| 1 year ago | 2025-10-04 | 95.9 | 436.52 | 835,966 | 835,958 | 871,685 | 35,964 |
*
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 | 2026-10-04 04:15 | 435.49 | 437.50 | -2.01 |
| 1 hour prior | 2026-10-04 03:15 | 435.48 | 437.50 | -2.02 |
| 2 hours prior | 2026-10-04 02:15 | 435.49 | 437.50 | -2.01 |
| 6 hours prior | 2026-10-03 22:15 | 435.49 | 437.50 | -2.01 |
| 12 hours prior | 2026-10-03 16:15 | 435.48 | 437.50 | -2.02 |
| 24 hours prior | 2026-10-03 04:15 | 435.32 | 437.50 | -2.18 |
| 48 hours prior | 2026-10-02 04:15 | 435.31 | 437.50 | -2.19 |
*
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
