Lewisville Lake
Source: Texas Water Development Board (Water Data for Texas)
SE 5 to 10 mph · rain 0%
SE 5 mph · rain 0%
Level history
Field notes
As of Oct 25, 2026, Lewisville Lake stood at 518.00 ft, which is 81.7% of its conservation capacity.
That is 4.00 ft below the conservation (full) pool elevation of 522.00 ft.
Over the past 7 days the lake has been falling (−0.20 ft), and it is −0.36 ft over 30 days.
Compared with a year ago (521.11 ft), the lake is 3.11 ft lower.
For this time of year, the median in TWDB's records (1996–2025, 30 years with data) is 84.2% full, so Lewisville is currently below normal by 2.5 percentage points.
In TWDB's dataset (since 1988), the highest level recorded is 536.79 ft (May 31, 2015) and the lowest is 507.05 ft (Oct 15, 2000). Older records may be monthly rather than daily.
Lake facts
| Conservation storage | 460,335 ac-ft |
|---|---|
| Total storage (latest) | 496,009 ac-ft |
| Surface area | 24,364 acres |
| Gauge location | 33.0693, -96.9644 |
| Groups | Trinity River Basin Region C Water Planning Area Water supply for Dallas |
Reference levels
| Level · source | Elevation | Today vs level |
|---|---|---|
| Conservation (full) pool TWDB | 522.00 ft | −4.00 ft |
| Dead pool TWDB | 481.00 ft | +37.00 ft |
| Highest in TWDB data (since 1988) TWDB series | 536.79 ft May 31, 2015 | −18.79 ft |
| Lowest in TWDB data (since 1988) TWDB series | 507.05 ft Oct 15, 2000 | +10.95 ft |
| Normal range for this date TWDB series, 30 years 1996–2025 | 70.7–97.5% full (median 84.2%) | — |
| Conservation capacity TWDB | 563,228 acre-feet | — |
Only levels the agency publishes, or that we compute directly from its own records, are listed. “Today vs level” = latest reading minus the reference level. A level the source does not publish is left out rather than estimated.
Nearby lakes
Common questions
How full is Lewisville Lake right now?
As of Oct 25, 2026, TWDB reports Lewisville Lake at 81.7% of its conservation capacity (460,335 of 563,228 acre-feet). For this date, the middle half of past years (1996–2025) ranged from 70.7% to 97.5% full, with a median of 84.2%.
What is the record high and low at Lewisville Lake?
In TWDB's records since 1988, the highest level is 536.79 ft (May 31, 2015) and the lowest is 507.05 ft (Oct 15, 2000).
What is full pool at Lewisville Lake?
The conservation (full) pool elevation used by TWDB is 522.00 ft. The lake is currently 4.00 ft below it.
Is Lewisville Lake rising or falling?
Over the last 7 days it changed −0.20 ft and over 30 days −0.36 ft.
How often is this page updated?
The page is rebuilt automatically every day from TWDB's published data. Values can be revised later by the source agency.
Where does the data come from?
Water Data for Texas, run by the Texas Water Development Board, which compiles gauge readings from USGS, USACE, river authorities and others. Forecasts come from the National Weather Service.
Values are TWDB daily estimates; elevations in feet above the vertical datum stated by TWDB. TWDB disclaimer: reservoir data are best estimates generated by the Texas Water Development Board from data collected by various providers; TWDB makes no warranties as to their fitness for any purpose. See data sources.