Lavon Lake: 90.3% full as of 2026-08-17
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 | 2026-08-17 | 90.3 | 490.03 | 372,718 | 369,877 | 409,757 | 19,815 |
| Yesterday | 2026-08-16 | 90.5 | 490.08 | 373,710 | 370,869 | 409,757 | 19,834 |
| 2 days ago | 2026-08-15 | 90.8 | 490.13 | 374,702 | 371,861 | 409,757 | 19,854 |
| 1 week ago | 2026-08-10 | 92.5 | 490.49 | 381,940 | 379,099 | 409,757 | 20,011 |
| 1 month ago | 2026-07-17 | 100.0 | 492.06 | 413,836 | 409,757 | 409,757 | 20,653 |
| 3 months ago | 2026-05-17 | 100.0 | 492.54 | 423,829 | 409,757 | 409,757 | 20,943 |
| 6 months ago | 2026-02-17 | 93.7 | 490.74 | 386,954 | 384,113 | 409,757 | 20,106 |
| 1 year ago | 2025-08-17 | 92.7 | 490.53 | 382,741 | 379,900 | 409,757 | 20,027 |
*
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 | 2026-08-17 22:00 | 490.01 | 492.00 | -1.99 |
| 1 hour prior | 2026-08-17 21:00 | 490.01 | 492.00 | -1.99 |
| 2 hours prior | 2026-08-17 20:00 | 490.01 | 492.00 | -1.99 |
| 6 hours prior | 2026-08-17 16:00 | 490.02 | 492.00 | -1.98 |
| 12 hours prior | 2026-08-17 10:00 | 490.03 | 492.00 | -1.97 |
| 24 hours prior | 2026-08-16 22:00 | 490.06 | 492.00 | -1.94 |
| 48 hours prior | 2026-08-15 22:00 | 490.11 | 492.00 | -1.89 |
*
Data is provisional and subject to revision.
Additional Information
| Impoundment date | 1953-01-01 |
| Vertical datum | NGVD29 |
| Dead pool elevation | 453.00 ft above NGVD29 |
| Service spillway crest elevation | 475.50 ft above NGVD29 |
| Top of flood gate elevation | 503.50 ft above NGVD29 |
| Emergency spillway crest elevation | 503.50 ft above NGVD29 |
| Flood pool elevation | 503.50 ft above NGVD29 |
| Maximum design elevation | 509.00 ft above NGVD29 |
| Top of dam elevation | 514.00 ft above NGVD29 |
|
Conservation pool elevation |
492.00 ft above NGVD29 |
|
Conservation pool elevation |
472.00 ft above NGVD29 |
| Data download (CSV) | period of record, last one year, last 30 days |
Elevation-Area-Capacity Curves
2011-07-01 (source: TWDB)
: GIS Data
2021-07-01 (source: TWDB)
: GIS Data
|
|
| Data Source | USGS:08060500 |
| USGS Monitoring Location | USGS:08060500 |
Lake Location
