Mountain Creek Lake: 98.3% full as of 2026-09-18

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 2026-09-18 98.3 456.83 22,462 22,462 22,850 2,656
Yesterday 2026-09-17 98.4 456.84 22,485 22,485 22,850 2,659
2 days ago 2026-09-16 98.4 456.84 22,485 22,485 22,850 2,659
1 week ago 2026-09-11 98.7 456.87 22,554 22,554 22,850 2,666
1 month ago 2026-08-18 100.0 457.16 23,218 22,850 22,850 2,733
3 months ago 2026-06-18 100.0 457.73 24,825 22,850 22,850 2,908
6 months ago 2026-03-18 100.0 457.74 24,858 22,850 22,850 2,912
1 year ago 2025-09-18 100.0 457.41 23,853 22,850 22,850 2,796
*

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 2026-09-18 06:45 456.83 457.00 -0.17
1 hour prior 2026-09-18 05:45 456.83 457.00 -0.17
2 hours prior 2026-09-18 04:45 456.83 457.00 -0.17
6 hours prior 2026-09-18 00:45 456.84 457.00 -0.16
12 hours prior 2026-09-17 18:45 456.84 457.00 -0.16
24 hours prior 2026-09-17 06:45 456.84 457.00 -0.16
48 hours prior 2026-09-16 06:45 456.84 457.00 -0.16
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1936-01-01
Vertical datum NGVD29
Service spillway crest elevation 431.00 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)
Data Source USGS:08050050
USGS Monitoring Location USGS:08050050

Lake Location