Lavon Lake water level — Texas
Lavon Lake in Texas was last measured at 489.15 ft (datum NGVD29), as of Aug 31, 2026, 3:00 AM (UTC-05:00) (USGS Water Services). That is 86% of conservation-pool capacity. Over its recent trend window the level has been falling (−2.0 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- 86%
- Storage
- 352,431 acre-ft
- Recent trend
- ↓Falling
−2.0 ft over the trend window
Recent trend
Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Source: USGS site 08060500 · USACE SWF/LVNT2, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →
About this gauge's record
This site's drainage basin covers approximately 770 sq mi of contributing watershed. USACE's continuous elevation record for this project begins in 1953 (3 tracked series for this project).
The dam behind Lavon Lake
Lavon Lake is held back by Lavon Dam (also recorded as Lavon Lake) , an earthfill embankment, holding the pool back by sheer mass and an impervious core rather than by the strength of concrete , standing 81 ft high and running 19,493 ft along its crest , built across EAST FORK OF TRINITY RIVER in Collin County , near ROCKWALL . It was completed in 1952 , and is owned by USACE - Fort Worth District (a federal owner) , to a design credited to CESWF.
Its recorded primary purpose is flood risk reduction — the pool is drawn down between storms so there is empty space waiting for the next flood, which is why this level can fall in dry weather and climb sharply after rain . It also serves flood risk reduction;fish and wildlife pond;recreation;water supply.
It is founded on rock;soil, with a earth core. Its spillway is gated, so the operator can hold the pool above the spillway crest and meter what leaves. The spillway opening is 480 ft wide.
NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in.
At its normal pool the reservoir covers about 21,400 acres. NID records a maximum storage of 1,020,500 acre-ft against a normal storage of 456,500 acre-ft. Its maximum discharge capacity is 357,700 cubic feet per second.
Dam facts: National Inventory of Dams record TX00007 , filed by US Army Corps of Engineers — U.S. Army Corps of Engineers, public domain. Water levels above come from USGS Water Services and are a separate source. (How this dam was matched to this gauge →)
How Lavon Lake compares nearby
Lavon Lake is at 86% of conservation-pool capacity. Of the 4 nearest lakes reporting a comparable figure, 4 are fuller. The fullest nearby is Mountain Creek Lake at 100% and the lowest is Lake Ray Hubbard at 89%. 5 of 6 nearby lakes with a current trend are also falling right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Lake Ray Hubbard | TX | 433.10 ft | 26 km |
| Efft2 | TX | 408.51 ft | 44 km |
| New Terrell City Lake | TX | 493.87 ft | 44 km |
| Lewisville Lake | TX | 519.69 ft | 45 km |
| Grapevine Lake | TX | 533.49 ft | 54 km |
| Mountain Creek Lake | TX | 456.98 ft | 54 km |
Frequently asked questions
- What is the current water level of Lavon Lake?
- As of Aug 31, 2026, 3:00 AM (UTC-05:00), the pool elevation was 489.15 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Lavon Lake full right now?
- The source reports it at 86% of conservation-pool capacity as of Aug 31, 2026, 3:00 AM (UTC-05:00).
- Where does this data come from?
- From USGS site 08060500 · USACE SWF/LVNT2, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in Texas
See every lake tracked in Texas, or read the methodology behind these figures.