Benbrook Lake: 91.8% full as of 2026-05-14

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 2026-05-14 91.8 692.04 78,665 78,665 85,648 3,471
1 day prior 2026-05-13 92.0 692.08 78,804 78,804 85,648 3,474
2 days prior 2026-05-12 92.0 692.08 78,804 78,804 85,648 3,474
1 week prior 2026-05-07 91.2 691.87 78,076 78,076 85,648 3,456
1 month prior 2026-04-14 84.5 690.19 72,398 72,398 85,648 3,294
3 months prior 2026-02-14 86.9 690.79 74,393 74,393 85,648 3,358
6 months prior 2025-11-14 86.7 690.76 74,293 74,293 85,648 3,355
1 year prior 2025-05-14 100.0 695.80 92,532 85,648 85,648 - n.a. -
*

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 2026-05-14 23:00 692.05 694.00 -1.95 below flood pool
1 hour prior 2026-05-14 22:00 692.07 694.00 -1.93 below flood pool
2 hours prior 2026-05-14 21:00 692.04 694.00 -1.96 below flood pool
6 hours prior 2026-05-14 17:00 692.04 694.00 -1.96 below flood pool
12 hours prior 2026-05-14 11:00 692.05 694.00 -1.95 below flood pool
24 hours prior 2026-05-13 23:00 692.08 694.00 -1.92 below flood pool
48 hours prior 2026-05-12 23:00 692.04 694.00 -1.96 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

Lake Location