Notes

2013-02-12: The rating curve for this reservoir has been updated and replaced with data from the Texas Water Development Board's Report 126.

Mountain Creek Lake: 100.0% full as of 2023-05-31

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

Historical Data

Date Percent Full Mean Water Level
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Today 2023-05-31 100.0 457.75 24,890 22,850 22,850 2,917
Yesterday 2023-05-30 100.0 457.71 24,760 22,850 22,850 2,899
2 days ago 2023-05-29 100.0 457.68 24,664 22,850 22,850 2,886
1 week ago 2023-05-24 100.0 457.58 24,351 22,850 22,850 2,848
1 month ago 2023-04-30 100.0 457.59 24,381 22,850 22,850 2,852
3 months ago 2023-02-28 100.0 457.95 25,569 22,850 22,850 - n.a. -
6 months ago 2022-11-30 100.0 457.63 24,506 22,850 22,850 2,867
1 year ago 2022-05-31 100.0 457.44 23,938 22,850 22,850 2,804
*

Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

**

   Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.

Most Recent Instantaneous Water Level

Date/time Water Level
(ft) 		Conservation Pool Elevation
(ft) 		Height Above Conservation Pool
(ft)
Most recent 2023-05-31 09:45 457.76 457.00 0.76
1 hour prior 2023-05-31 08:45 457.75 457.00 0.75
2 hours prior 2023-05-31 07:45 457.75 457.00 0.75
6 hours prior 2023-05-31 03:45 457.75 457.00 0.75
12 hours prior 2023-05-30 21:45 457.74 457.00 0.74
24 hours prior 2023-05-30 09:45 457.69 457.00 0.69
48 hours prior 2023-05-29 09:45 457.69 457.00 0.69
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1936-01-01
Gauge USGS:08050050
Vertical datum NGVD29
Service spillway crest elevation 431.00 ft above NGVD29
Top of flood gate elevation 458.00 ft above NGVD29
Emergency spillway crest elevation 458.00 ft above NGVD29
Top of dam elevation 467.00 ft above NGVD29
Conservation pool elevation 457.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1974-10-01 (source: TWDB)

Lake Location