Martin Lake: 89.5% full as of 2026-08-11

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 2026-08-11 89.5 304.34 67,753 67,753 75,726 4,652
Yesterday 2026-08-10 89.7 304.38 67,939 67,939 75,726 4,659
2 days ago 2026-08-09 89.9 304.41 68,079 68,079 75,726 4,665
1 week ago 2026-08-04 91.1 304.60 68,968 68,968 75,726 4,699
1 month ago 2026-07-11 95.1 305.24 72,014 72,014 75,726 4,816
3 months ago 2026-05-11 95.4 305.29 72,254 72,254 75,726 4,825
6 months ago 2026-02-11 87.7 304.05 66,412 66,412 75,726 4,599
1 year ago 2025-08-11 96.5 305.46 73,078 73,078 75,726 4,856
*

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 2026-08-11 18:30 304.32 306.00 -1.68
1 hour prior 2026-08-11 17:30 304.32 306.00 -1.68
2 hours prior 2026-08-11 16:30 304.33 306.00 -1.67
6 hours prior 2026-08-11 12:30 304.33 306.00 -1.67
12 hours prior 2026-08-11 06:30 304.34 306.00 -1.66
24 hours prior 2026-08-10 18:30 304.39 306.00 -1.61
48 hours prior 2026-08-09 18:30 304.41 306.00 -1.59
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1974-01-01
Vertical datum NGVD29
Service spillway crest elevation 294.00 ft above NGVD29
Emergency spillway crest elevation 312.00 ft above NGVD29
Top of dam elevation 321.50 ft above NGVD29
Conservation pool elevation 306.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1999-05-01 (source: TWDB) : GIS Data
2014-08-01 (source: TWDB) : GIS Data
Data Source USGS:08022060
USGS Monitoring Location USGS:08022060

Lake Location