Lewisville Lake Water Level
Texas · updated daily from the Texas Water Development Board
93.3% full
Lewisville Lake is near full at 520.57 ft and falling (-0.42 ft in the last 7 days).
1.43 ft below full pool of 522.00 ft · change since yesterday -0.03 ft
Reading as of 2026-08-15 · higher than 55% of August readings on record
Where Lewisville Lake sits historically
Today's level compared with every reading in our 38.6-year record for this lake.
Since yesterday
-0.03 ft
7-day change
-0.42 ft
30-day change
-1.64 ft
1-year change
-0.30 ft
Full pool
522.0 ft
Last 30 days
Last 12 months
Full history (38.6 years)
Lewisville Lake records and averages
| Current level | 520.57 ft |
|---|---|
| Percent full | 93.3% |
| Storage | 560,964 acre-feet |
| Record high | 536.79 ft (2015-05-31) |
| Record low | 507.05 ft (2000-10-15) |
| Average of all readings | 519.81 ft |
| Data span | 38.6 years (13,388 readings) |
Frequently asked questions
Is Lewisville Lake full right now?
Lewisville Lake is at 93.3% of conservation capacity as of 2026-08-15, which we classify as near full.Over the past 30 days the level has fallen 1.64 ft.
What is the water level at Lewisville Lake today?
The most recent reading is 520.57 ft (2026-08-15), sourced from the Texas Water Development Board. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Lewisville Lake has ever been?
The highest level 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 38.6 years of readings.
Is Lewisville Lake low for this time of year?
Compared with every August in our records, the current level is higher than 55% of them — near full. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Lewisville Lake low right now?
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 1.64 ft over the past 30 days. For the operational reason on any given week, check the Texas Water Development Board directly.
How much has Lewisville Lake changed over the past year?
The level is -0.30 ft compared with this date last year (520.57 ft today). The full-history chart above covers 38.6 years, with a record high of 536.79 ft and a record low of 507.05 ft.
Nearby lakes in Texas
Source: the Texas Water Development Board. Readings are provisional and subject to revision by the publishing agency. All Texas lake levels.