Lewisville Lake: 84.1% 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 | 84.1 | 518.55 | 509,524 | 473,850 | 563,228 | 24,778 |
| Yesterday | 2026-10-08 | 84.0 | 518.53 | 509,029 | 473,355 | 563,228 | 24,763 |
| 2 days ago | 2026-10-07 | 84.2 | 518.56 | 509,772 | 474,098 | 563,228 | 24,786 |
| 1 week ago | 2026-10-02 | 84.1 | 518.54 | 509,277 | 473,603 | 563,228 | 24,771 |
| 1 month ago | 2026-09-09 | 87.0 | 519.19 | 525,531 | 489,857 | 563,228 | 25,237 |
| 3 months ago | 2026-07-09 | 100.0 | 522.46 | 611,400 | 563,228 | 563,228 | - n.a. - |
| 6 months ago | 2026-04-09 | 100.0 | 522.70 | 617,978 | 563,228 | 563,228 | - n.a. - |
| 1 year ago | 2025-10-09 | 94.6 | 520.85 | 568,292 | 532,618 | 563,228 | 26,252 |
*
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 03:15 | 518.52 | 522.00 | -3.48 |
| 1 hour prior | 2026-10-09 02:15 | 518.56 | 522.00 | -3.44 |
| 2 hours prior | 2026-10-09 01:15 | 518.56 | 522.00 | -3.44 |
| 6 hours prior | 2026-10-08 21:15 | 518.54 | 522.00 | -3.46 |
| 12 hours prior | 2026-10-08 15:15 | 518.50 | 522.00 | -3.50 |
| 24 hours prior | 2026-10-08 03:15 | 518.56 | 522.00 | -3.44 |
| 48 hours prior | 2026-10-07 03:15 | 518.58 | 522.00 | -3.42 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1955-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 481.00 ft above NGVD29 |
| Emergency spillway crest elevation | 532.00 ft above NGVD29 |
| Flood pool elevation | 532.00 ft above NGVD29 |
| Maximum design elevation | 552.14 ft above NGVD29 |
| Maximum design elevation | 553.00 ft above NGVD29 |
| Top of dam elevation | 560.00 ft above NGVD29 |
| Conservation pool elevation | 522.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2007-09-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08052800 |
| USGS Monitoring Location | USGS:08052800 |
Lake Location
