Lake Brownwood: 97.9% full as of 2025-03-12

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)
Most recent 2025-03-12 97.9 1,424.50 128,148 128,148 130,868 6,711
1 day prior 2025-03-11 98.0 1,424.51 128,215 128,215 130,868 6,713
2 days prior 2025-03-10 98.0 1,424.52 128,283 128,283 130,868 6,715
1 week prior 2025-03-05 98.3 1,424.58 128,686 128,686 130,868 6,728
1 month prior 2025-02-12 98.8 1,424.67 129,292 129,292 130,868 6,746
3 months prior 2024-12-12 100.0 1,424.92 130,985 130,868 130,868 6,798
6 months prior 2024-09-12 96.8 1,424.28 126,677 126,677 130,868 6,666
1 year prior 2024-03-12 59.7 1,415.91 78,089 78,089 130,868 4,944
*

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 2025-03-12 23:30 1,424.49 1,424.90 -0.41
1 hour prior 2025-03-12 22:30 1,424.49 1,424.90 -0.41
2 hours prior 2025-03-12 21:30 1,424.49 1,424.90 -0.41
6 hours prior 2025-03-12 17:30 1,424.52 1,424.90 -0.38
12 hours prior 2025-03-12 11:30 1,424.51 1,424.90 -0.39
24 hours prior 2025-03-11 23:30 1,424.50 1,424.90 -0.40
48 hours prior 2025-03-10 23:30 1,424.51 1,424.90 -0.39
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1933-01-01
Vertical datum
Start date: 2022-05-21 		NAVD88
Vertical datum
Start date to end date: 1999-02-24 to 2022-05-20 		NGVD29
Dead pool elevation
Start date: 1959-01-01 		1,329.50 ft above NGVD29
Dead pool elevation
End date: 1959-01-01 		1,405.50 ft above NGVD29
Emergency spillway crest elevation 1,425.00 ft above NAVD88
Top of dam elevation 1,470.00 ft above NAVD88
Conservation pool elevation 1,424.60 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1997-04-01 (source: TWDB) : GIS Data
2013-06-01 (source: TWDB) : GIS Data
Data Source USGS:08143000

Lake Location