Lake Bonham: 96.1% full as of 2019-07-23

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)
Today 2019-07-23 96.1 564.59 10,611 10,599 11,027 1,033
Yesterday 2019-07-22 96.3 564.61 10,632 10,620 11,027 1,034
2 days ago 2019-07-21 96.5 564.63 10,652 10,640 11,027 1,035
1 week ago 2019-07-16 97.9 564.78 10,808 10,796 11,027 1,041
1 month ago 2019-06-23 100.0 565.07 11,113 11,027 11,027 1,074
3 months ago 2019-04-23 100.0 565.14 11,189 11,027 11,027 1,077
6 months ago 2019-01-23 99.6 564.96 10,996 10,984 11,027 1,061
1 year ago 2018-07-23 86.8 563.57 9,581 9,569 11,027 987
*

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 2019-07-23 08:00 564.58 565.00 -0.42 below flood pool
1 hour prior 2019-07-23 07:00 564.58 565.00 -0.42 below flood pool
2 hours prior 2019-07-23 06:00 564.58 565.00 -0.42 below flood pool
6 hours prior 2019-07-23 02:00 564.59 565.00 -0.41 below flood pool
12 hours prior 2019-07-22 20:00 564.60 565.00 -0.40 below flood pool
24 hours prior 2019-07-22 08:00 564.61 565.00 -0.39 below flood pool
48 hours prior 2019-07-21 08:00 564.63 565.00 -0.37 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1969-01-01
Vertical datum NGVD29
Gauge USGS:07332610
Dead pool elevation 538.00 ft above NGVD29
Service spillway crest elevation 565.00 ft above NGVD29
Emergency spillway crest elevation 571.00 ft above NGVD29
Top of dam elevation 584.00 ft above NGVD29
Conservation pool elevation 565.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1969-01-01 (source: usgs)
2004-03-01 (source: twdb) : GIS Data

Lake Location