Lake Brownwood: 88.0% full as of 2026-08-21

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 2026-08-21 88.0 1,422.50 115,137 115,137 130,868 6,300
Yesterday 2026-08-20 88.1 1,422.53 115,327 115,327 130,868 6,306
2 days ago 2026-08-19 88.3 1,422.56 115,516 115,516 130,868 6,312
1 week ago 2026-08-14 89.1 1,422.73 116,592 116,592 130,868 6,347
1 month ago 2026-07-21 93.0 1,423.52 121,670 121,670 130,868 6,510
3 months ago 2026-05-21 81.6 1,421.14 106,760 106,760 130,868 6,020
6 months ago 2026-02-21 83.0 1,421.45 108,636 108,636 130,868 6,084
1 year ago 2025-08-21 95.1 1,423.94 124,422 124,422 130,868 6,596
*

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 2026-08-21 10:30 1,422.50 1,424.90 -2.40
1 hour prior 2026-08-21 09:30 1,422.50 1,424.90 -2.40
2 hours prior 2026-08-21 08:30 1,422.49 1,424.90 -2.41
6 hours prior 2026-08-21 04:30 1,422.50 1,424.90 -2.40
12 hours prior 2026-08-20 22:30 1,422.51 1,424.90 -2.39
24 hours prior 2026-08-20 10:30 1,422.53 1,424.90 -2.37
48 hours prior 2026-08-19 10:30 1,422.56 1,424.90 -2.34
*

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
USGS Monitoring Location USGS:08143000

Lake Location