Lewisville Lake, TX

Lewisville Lake is at 83.5% of conservation capacity as of 2026-10-13, which we classify as below full. That is 3.60 ft below full pool of 522.00 ft. Over the past 30 days the level has fallen 0.59 ft.

The most recent reading at Lewisville Lake is 518.40 ft (2026-10-13), sourced from the Texas Water Development Board. Readings on this page refresh automatically as the agency publishes new data.

The highest level for Lewisville Lake in our records is 536.79 ft on 2015-05-31. The lowest is 507.05 ft on 2000-10-15. Our record covers about 38 years of readings.

Compared with every October in our records, the current level is higher than 43% of them, which we classify as below full. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.

Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. Lewisville Lake has fallen 0.59 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.

Lewisville Lake is -2.33 ft compared with this date last year (518.40 ft today). The full-history chart above covers 38 years, with a record high of 536.79 ft and a record low of 507.05 ft.