Lake Bonham: 73.0% full as of 2025-01-20

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 2025-01-20 73.0 561.96 8,058 8,046 11,027 876
Yesterday 2025-01-19 73.1 561.98 8,075 8,063 11,027 888
2 days ago 2025-01-18 73.4 562.02 8,110 8,098 11,027 901
1 week ago 2025-01-13 73.4 562.02 8,110 8,098 11,027 901
1 month ago 2024-12-20 69.8 561.53 7,704 7,692 11,027 800
3 months ago 2024-10-20 72.6 561.91 8,016 8,004 11,027 846
6 months ago 2024-07-20 91.4 564.08 10,090 10,078 11,027 1,010
1 year ago 2024-01-20 93.0 564.25 10,263 10,251 11,027 1,017
*

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 2025-01-20 15:00 561.98 565.00 -3.02
1 hour prior 2025-01-20 14:00 561.98 565.00 -3.02
2 hours prior 2025-01-20 13:00 561.98 565.00 -3.02
6 hours prior 2025-01-20 09:00 561.96 565.00 -3.04
12 hours prior 2025-01-20 03:00 561.96 565.00 -3.04
24 hours prior 2025-01-19 15:00 561.98 565.00 -3.02
48 hours prior 2025-01-18 15:00 562.03 565.00 -2.97
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1969-01-01
Vertical datum NGVD29
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
Data Source USGS:07332610

Lake Location