Lake Lbj water level — Texas
Lake Lbj in Texas was last measured at 825.41 ft (datum NAVD88), as of Aug 31, 2026, 3:10 AM (UTC-05:00) (USGS Water Services). Over its recent trend window the level has been steady (+0.1 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- →Steady
+0.1 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 08152500, 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 36,823 sq mi of contributing watershed.
The dam behind Lake Lbj
Lake Lbj is held back by Wirtz Dam (also recorded as Lcra Wirtz Dam) , an earthfill embankment, holding the pool back by sheer mass and an impervious core rather than by the strength of concrete , standing 118 ft high and running 5,687 ft along its crest , built across COLORADO RIVER in Burnet County , near MARBLE FALLS . It was completed in 1951 and modified in 1997H , and is owned by LOWER COLORADO RIVER AUTHORITY (a local government owner) , to a design credited to FARGO ENGINEERING CO AND LAN CHRISTENSON CO (MOD);FREESE & NICHOLS INC.
Its recorded primary purpose is irrigation — the pool is drawn down across the growing season to serve water rights downstream, then refilled over winter . It also serves irrigation;recreation;hydroelectric.
It is founded on rock;soil, with a concrete core. Its spillway is gated, so the operator can hold the pool above the spillway crest and meter what leaves. The spillway opening is 629 ft wide. Its outlet works use other controlled2.
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. Its most recent condition assessment was satisfactory — no deficiencies recognised for expected loading. That assessment is dated 09/29/2017.
At its normal pool the reservoir covers about 6,534 acres. NID records a maximum storage of 223,000 acre-ft against a normal storage of 134,353 acre-ft. Its maximum discharge capacity is 269,000 cubic feet per second. It is regulated by TCEQ.
Dam facts: National Inventory of Dams record TX00986 , filed by Texas — 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 Lake Lbj compares nearby
1 of 6 nearby lakes with a current trend are also steady right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Lake Marble Falls | TX | 737.31 ft | 8 km |
| Inks Lake | TX | 887.40 ft | 20 km |
| Lake Buchanan | TX | 1,019.32 ft | 23 km |
| Ubc Dam 1 | TX | 1,011.36 ft | 44 km |
| Lake Travis | TX | 679.16 ft | 45 km |
| Ubc Dam 2 at Leander | TX | 945.90 ft | 48 km |
Frequently asked questions
- What is the current water level of Lake Lbj?
- As of Aug 31, 2026, 3:10 AM (UTC-05:00), the pool elevation was 825.41 ft (datum NAVD88), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Lake Lbj full right now?
- Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
- Where does this data come from?
- From USGS site 08152500, 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.