Lake Austin water level
Lake Austin is at 492.06 ft above mean sea level — 0.74 ft below its full level of 492.8 ft.
492.8 ft
1,830 acres
23,972 ac-ft
How steady it really is — since 2016
Last 365 days: median 492.2 ft, range 491.9–492.6 ft.
Why Lake Austin stays put
Lake Austin is a pass-through lake: Tom Miller Dam passes inflow on downstream rather than holding it, and LCRA keeps the level within about a foot of full. A lakeside dock here rarely sees the swings Lake Travis is known for.
The exceptions are deliberate: pass-through lakes are occasionally drawn down several feet for dock maintenance and invasive-plant control, announced by LCRA in advance. The chart above shows exactly how often that has actually happened here.
Lake Travis water level — common questions
What is the water level of Lake Austin today?
Lake Austin is at 492.06 feet above mean sea level, 0.74 ft below its full level of 492.8 ft.
Does the water level of Lake Austin change?
Lake Austin is a pass-through lake that LCRA holds near a constant level — over the last 365 days of record it sat around 492.2 ft and stayed within 0.7 ft top to bottom. Flood-control storage for the chain is handled by Lake Buchanan and Lake Travis instead.
How big is Lake Austin?
Lake Austin covers about 1,830 acres when full and holds 23,972 acre-feet at its conservation pool of 492.8 ft. It is formed by Tom Miller Dam, completed in 1940.
The lake that does move: Lake Travis — level & 10-day forecast · all six Highland Lakes. Source: Texas Water Development Board (Water Data For Texas), daily record · daily record since January 1, 1966.