Outlook

Middle estimate, with the range the level has an 8 in 10 chance of landing in. The bars share one scale: change from today.

Next week · by Nov 2736.6 ft224.52 m0.0 ft−0.01 m from todayLikely 736.4224.46 to 736.7 ft224.56 mChance of ending 1 ft0.3 m or more higher: under 5%

In 2 weeks · by Nov 9736.6 ft224.52 m0.0 ft−0.01 m from todayLikely 736.4224.46 to 736.8 ft224.56 mChance of ending 1 ft0.3 m or more higher: under 5%

In a month · by Nov 25736.6 ft224.51 m−0.1 ft−0.02 m from todayLikely 736.4224.46 to 736.9 ft224.61 mChance of ending 1 ft0.3 m or more higher: under 5%

Rises are harder to call. Heavy rain in the watershed can push the lake above these ranges within days.

Rain, past 7 days: 0.3 in9 mm watershed average
Rain forecast, next 7 days: 1.2 in30 mm normal 0.4 in11 mm

Statistical estimate, not safety, boating, or water-quality advice. For ramps, closures and advisories, check the lake operator.

Map

Map of Lake Marble Falls with the dam, level gauge and 1 public boat ramp.

Dam
Level gauge
Public boat ramp

Ramp locations from Texas Parks and Wildlife. Whether a ramp is open depends on the lake level; check the operator.

Level and outlook

FeetMeters above sea level

Measured
Middle estimate
8 in 10 range
Full pool

Show outlook as a table

Date	Low end	Middle	High end
Nov 2	736.4224.46	736.6224.52	736.7224.56
Nov 9	736.4224.46	736.6224.52	736.8224.56
Nov 25	736.4224.46	736.6224.51	736.9224.61

How well this outlook has done here

We tested the 2-week outlook on past years at this lake, as if made once a week with only what was known that day.

On average it was off by: 0.18 ft0.05 m Assuming the level stays the same was off by 0.18 ft0.05 m
Actual level inside our range: 90% of 432 tests; the range is built to catch 8 in 10

The rise chance uses the same threshold for every lake: 1 ft (0.3048 m).

Connected lakes

Water from upstream lakes flows into this one; water released here flows on downstream.

Upstream

Lake LBJ824.8 ft251.39 m · 99%

Downstream

Lake Travis677.2 ft206.42 m · 94%

Nearby lakes

Closest lakes in a straight line, with today's level.

About Lake Marble Falls

Lake Marble Falls is the smallest of the Highland Lakes, on the Colorado River at the city of Marble Falls. Max Starcke Dam was completed in 1951 by the Lower Colorado River Authority and is used mainly for hydropower and recreation. It sits between Lake LBJ upstream and Lake Travis downstream.

More: Wikipedia · Texas Water Development Board

Full pool (conservation): 737.0 ft224.64 m
Highest level since 1966: 821.0 ft250.23 m, Oct 1995
Lowest level since 1966: 682.8 ft208.11 m, Apr 1999
Surface area at normal pool: 780 acres316 ha
Conservation storage: 7,597 acre-feet9.37 million m³
Dam: Max Starcke Dam, 1951
River or creek: Colorado River
County: Burnet
Owner: Lower Colorado River Authority

Elevations are feetmeters above sea level (NAVD88).

Common questions

Is Lake Marble Falls full right now?

On Oct 26 it was 736.7 ft, 0.3 ft below full pool (737.0 ft), holding 97% of its conservation storage.On Oct 26 it was 224.53 m, 0.10 m below full pool (224.64 m), holding 97% of its conservation storage.

Is Lake Marble Falls going up or down?

The middle estimate for Nov 9 is about steady, with an 8 in 10 chance it ends between 736.4 ft and 736.8 ft. The chance it ends 1 ft or more higher than today is under 5%. Heavy rain can change that quickly.The middle estimate for Nov 9 is about steady, with an 8 in 10 chance it ends between 224.46 m and 224.56 m. The chance it ends 0.3 m or more higher than today is under 5%. Heavy rain can change that quickly.

Where does this data come from?

Daily levels come from the Texas Water Development Board and lake operators. The outlook is our own statistical model, using recent levels and forecast rain over the watershed.