Benbrook Lake: 81.0% full as of 2018-09-23

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 2018-09-23 81.0 689.27 69,413 69,413 85,648 3,197
1 day prior 2018-09-22 79.7 688.91 68,268 68,268 85,648 3,165
2 days prior 2018-09-21 76.4 688.01 65,455 65,455 85,648 3,087
1 week prior 2018-09-16 75.6 687.77 64,716 64,716 85,648 3,067
1 month prior 2018-08-23 70.1 686.22 60,053 60,053 85,648 2,953
3 months prior 2018-06-23 83.2 689.84 71,252 71,252 85,648 3,257
6 months prior 2018-03-23 100.0 694.27 86,652 85,648 85,648 - n.a. -
1 year prior 2017-09-23 96.6 693.19 82,705 82,705 85,648 3,556
*

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 2018-09-23 13:00 689.33 694.0 -4.7 below flood pool
1 hour prior 2018-09-23 12:00 689.33 694.0 -4.7 below flood pool
2 hours prior 2018-09-23 11:00 689.34 694.0 -4.7 below flood pool
6 hours prior 2018-09-23 07:00 689.27 694.0 -4.7 below flood pool
12 hours prior 2018-09-23 01:00 689.24 694.0 -4.8 below flood pool
24 hours prior 2018-09-22 13:00 688.96 694.0 -5.0 below flood pool
48 hours prior 2018-09-21 13:00 687.98 694.0 -6.0 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1950-01-01
Vertical datum NGVD29
Gauge USGS:08046500
Dead pool elevation 622.0 ft above NGVD29
Service spillway crest elevation 710.0 ft above NGVD29
Emergency spillway crest elevation 724.0 ft above NGVD29
Flood pool elevation 710.0 ft above NGVD29
Maximum design elevation 741.0 ft above NGVD29
Top of dam elevation 747.0 ft above NGVD29
Conservation pool elevation 694.0 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

Lake Location