Texas · Trinity basin

Mountain Creek Lake water levelToday and the 30-day outlook

457.7 ft139.51 mabove sea level, reading of Oct 26100% of conservation storage

Likely to hold about steady through Nov 9. It is 0.7 ft above full pool.Likely to hold about steady through Nov 9. It is 0.21 m above full pool.

Updated Oct 27, 3:53 PM CT · Level data: Texas Water Development Board

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 2457.6 ft139.49 m−0.1 ft−0.02 m from todayLikely 457.5139.44 to 457.8 ft139.55 mChance of ending 1 ft0.3 m or more higher: under 5%
In 2 weeks · by Nov 9457.6 ft139.49 m−0.1 ft−0.02 m from todayLikely 457.5139.44 to 457.9 ft139.58 mChance of ending 1 ft0.3 m or more higher: under 5%
In a month · by Nov 25457.6 ft139.46 m−0.1 ft−0.04 m from todayLikely 457.4139.42 to 457.8 ft139.55 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
0.0 in0 mm watershed average
Rain forecast, next 7 days
0.5 in13 mm normal 1.0 in25 mm

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

Map

Map of Mountain Creek Lake 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
Show outlook as a table
DateLow endMiddleHigh end
Nov 2457.5139.44457.6139.49457.8139.55
Nov 9457.5139.44457.6139.49457.9139.58
Nov 25457.4139.42457.6139.46457.8139.55

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
0.15 ft0.05 m Assuming the level stays the same was off by 0.17 ft0.05 m
Actual level inside our range
82% 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.

Nearby lakes

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

About Mountain Creek Lake

Mountain Creek Lake is a reservoir in southwest Dallas, about 8 miles from downtown, built in 1936 and owned by a power company. Joe Pool Lake is upstream on Mountain Creek, and the creek continues to the Trinity River.

More: Wikipedia · Texas Water Development Board

Full pool (conservation)
457.0 ft139.29 m
Highest level since 1987
458.7 ft139.82 m, Oct 2023
Lowest level since 1987
454.4 ft138.51 m, Sep 1998
Surface area at normal pool
2,880 acres1,165 ha
Conservation storage
22,850 acre-feet28 million m³
Dam
Mountain Creek Dam, 1936
River or creek
Mountain Creek
County
Dallas
Owner
Constellation Texas Power Services LLC

Elevations are feetmeters above sea level (NGVD29).

Common questions

Is Mountain Creek Lake full right now?

On Oct 26 it was 457.7 ft, 0.7 ft above full pool (457.0 ft), holding 100% of its conservation storage.On Oct 26 it was 139.51 m, 0.21 m above full pool (139.29 m), holding 100% of its conservation storage.

Is Mountain Creek Lake going up or down?

The middle estimate for Nov 9 is about steady, with an 8 in 10 chance it ends between 457.5 ft and 457.9 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 139.44 m and 139.58 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.