Benbrook Lake: 75.0% full as of 2026-09-13

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 2026-09-13 75.0 687.61 64,227 64,227 85,648 3,054
Yesterday 2026-09-12 75.3 687.70 64,502 64,502 85,648 3,061
2 days ago 2026-09-11 75.8 687.84 64,931 64,931 85,648 3,073
1 week ago 2026-09-06 77.8 688.40 66,665 66,665 85,648 3,120
1 month ago 2026-08-13 89.0 691.32 76,187 76,187 85,648 3,410
3 months ago 2026-06-13 100.0 694.52 87,589 85,648 85,648 - n.a. -
6 months ago 2026-03-13 84.7 690.24 72,563 72,563 85,648 3,299
1 year ago 2025-09-13 90.5 691.71 77,524 77,524 85,648 3,444
*

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 2026-09-13 19:00 687.59 694.00 -6.41 below flood pool
1 hour prior 2026-09-13 18:00 687.59 694.00 -6.41 below flood pool
2 hours prior 2026-09-13 17:00 687.56 694.00 -6.44 below flood pool
6 hours prior 2026-09-13 13:00 687.62 694.00 -6.38 below flood pool
12 hours prior 2026-09-13 07:00 687.62 694.00 -6.38 below flood pool
24 hours prior 2026-09-12 19:00 687.66 694.00 -6.34 below flood pool
48 hours prior 2026-09-11 19:00 687.76 694.00 -6.24 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1950-01-01
Vertical datum NGVD29
Dead pool elevation 622.00 ft above NGVD29
Service spillway crest elevation 710.00 ft above NGVD29
Emergency spillway crest elevation 724.00 ft above NGVD29
Flood pool elevation 710.00 ft above NGVD29
Maximum design elevation 741.00 ft above NGVD29
Top of dam elevation 747.00 ft above NGVD29
Conservation pool elevation 694.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1950-01-01 (source: USGS)
1998-01-01 (source: TWDB) : GIS Data
Data Source USGS:08046500
USGS Monitoring Location USGS:08046500

Lake Location