Lake Bonham: 87.9% full as of 2017-11-18

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 2017-11-18 87.9 563.69 9,700 9,688 11,027 992
1 day prior 2017-11-17 87.9 563.70 9,710 9,698 11,027 993
2 days prior 2017-11-16 88.0 563.71 9,720 9,708 11,027 993
1 week prior 2017-11-11 88.4 563.75 9,760 9,748 11,027 995
1 month prior 2017-10-18 89.0 563.82 9,829 9,817 11,027 998
3 months prior 2017-08-18 100.0 565.74 11,844 11,027 11,027 1,108
6 months prior 2017-05-18 74.4 562.14 8,219 8,207 11,027 912
1 year prior 2016-11-18 75.7 562.29 8,357 8,345 11,027 922
*

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 2017-11-18 09:00 563.71 565.0 -1.3 below flood pool
1 hour prior 2017-11-18 08:00 563.69 565.0 -1.3 below flood pool
2 hours prior 2017-11-18 07:00 563.68 565.0 -1.3 below flood pool
6 hours prior 2017-11-18 03:00 563.69 565.0 -1.3 below flood pool
12 hours prior 2017-11-17 21:00 563.71 565.0 -1.3 below flood pool
24 hours prior 2017-11-17 09:00 563.70 565.0 -1.3 below flood pool
48 hours prior 2017-11-16 09:00 563.71 565.0 -1.3 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 538.0 ft above NGVD29
Service spillway crest elevation 565.0 ft above NGVD29
Emergency spillway crest elevation 571.0 ft above NGVD29
Top of dam elevation 584.0 ft above NGVD29
Conservation pool elevation 565.0 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