Lewisville Lake: 81.2% full as of 2026-11-08
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 | 2026-11-08 | 81.2 | 517.87 | 492,849 | 457,175 | 563,228 | 24,264 |
| Yesterday | 2026-11-07 | 81.2 | 517.88 | 493,092 | 457,418 | 563,228 | 24,272 |
| 2 days ago | 2026-11-06 | 81.4 | 517.92 | 494,063 | 458,389 | 563,228 | 24,302 |
| 1 week ago | 2026-11-01 | 81.0 | 517.82 | 491,636 | 455,962 | 563,228 | 24,226 |
| 1 month ago | 2026-10-08 | 84.0 | 518.53 | 509,029 | 473,355 | 563,228 | 24,763 |
| 3 months ago | 2026-08-08 | 95.2 | 520.99 | 571,973 | 536,299 | 563,228 | 26,335 |
| 6 months ago | 2026-05-08 | 100.0 | 522.09 | 601,335 | 563,228 | 563,228 | - n.a. - |
| 1 year ago | 2025-11-08 | 95.2 | 520.98 | 571,709 | 536,035 | 563,228 | 26,329 |
*
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 | 2026-11-08 09:15 | 517.90 | 522.00 | -4.10 |
| 1 hour prior | 2026-11-08 08:15 | 517.86 | 522.00 | -4.14 |
| 2 hours prior | 2026-11-08 07:15 | 517.87 | 522.00 | -4.13 |
| 6 hours prior | 2026-11-08 03:15 | 517.85 | 522.00 | -4.15 |
| 12 hours prior | 2026-11-07 21:15 | 517.91 | 522.00 | -4.09 |
| 24 hours prior | 2026-11-07 09:15 | 517.87 | 522.00 | -4.13 |
| 48 hours prior | 2026-11-06 09:15 | 517.92 | 522.00 | -4.08 |
*
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
