518.42 ft NGVD29
84% full share of conservation capacity, per Water Data for Texas as of September 23, 2026
level 3.6 ft below full pool — typical for late September
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 08052800) and updates live when you load this page.
Is Lewisville Lake full?
Not quite — 3.6 ft below full pool as of September 24, 2026
How full is Lewisville Lake? Lewisville Lake was holding 84% of its conservation capacity on September 23, 2026, per Water Data for Texas.
Lewisville Lake through the year
The band is the lake's own normal: where the level has run on each calendar day, 1988–2026. The summer drawdown — and how this year sits in it — shows up without reading a single number.
This year vs the years that matter
This year's trace against last year and the driest and wettest years on record — the drought-context question every lake regular asks.
- 2026 (this year)
- 2025 (last year)
- 2015 (wettest on record)
- 2000 (driest on record)
Full pool, datum, and the gauge
"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.
| Full pool | 522.00 ft NGVD29 · per USACE Fort Worth District full-pool reference |
|---|---|
| Conservation capacity | 563,228 acre-feet · per USACE Fort Worth District capacity reference |
| Gauge | USGS gauge 08052800 · U.S. Geological Survey National Water Information System |
| Datum | NGVD29 |
| Last verified | August 15, 2026 |
LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.
Quick answers
What is the lake level for Lewisville Lake today?
Lewisville Lake is at 518.42 ft (NGVD29) as of September 24, 2026 — 3.6 ft below full pool — typical for late September.
Is Lewisville Lake full?
Not quite — at 518.42 ft on September 24, 2026, Lewisville Lake is 3.6 ft below its full pool of 522.00 ft (NGVD29).
How full is Lewisville Lake?
Lewisville Lake was holding 84% of its conservation capacity on September 23, 2026, per Water Data for Texas.
What is full pool for Lewisville Lake?
Full pool (the conservation pool) for Lewisville Lake is 522.00 ft NGVD29, per USACE Fort Worth District full-pool reference. Levels above it use flood storage; levels below it are drawdown.