Lake Granbury: 99.0% full as of 2024-12-21

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 2024-12-21 99.0 692.54 132,556 131,647 132,949 8,114
Yesterday 2024-12-20 99.0 692.54 132,556 131,647 132,949 8,114
2 days ago 2024-12-19 99.0 692.53 132,474 131,565 132,949 8,110
1 week ago 2024-12-14 99.5 692.62 133,206 132,297 132,949 8,143
1 month ago 2024-11-21 100.0 692.72 134,022 132,949 132,949 8,179
3 months ago 2024-09-21 97.7 692.32 130,779 129,870 132,949 8,034
6 months ago 2024-06-21 99.4 692.61 133,124 132,215 132,949 8,139
1 year ago 2023-12-21 96.9 692.19 129,738 128,829 132,949 7,986
*

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 2024-12-21 05:30 692.53 692.70 -0.17 below operating pool
1 hour prior 2024-12-21 04:30 692.53 692.70 -0.17 below operating pool
2 hours prior 2024-12-21 03:30 692.53 692.70 -0.17 below operating pool
6 hours prior 2024-12-20 23:30 692.53 692.70 -0.17 below operating pool
12 hours prior 2024-12-20 17:30 692.53 692.70 -0.17 below operating pool
24 hours prior 2024-12-20 05:30 692.54 692.70 -0.16 below operating pool
48 hours prior 2024-12-19 05:30 692.53 692.70 -0.17 below operating pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1969-01-01
Vertical datum NGVD29 -1.11
Dead pool elevation 640.00 ft above NGVD29 -1.11
Service spillway crest elevation 658.00 ft above NGVD29 -1.11
Top of flood gate elevation 693.00 ft above NGVD29 -1.11
Emergency spillway crest elevation 693.00 ft above NGVD29 -1.11
Top of dam elevation 706.50 ft above NGVD29 -1.11
Conservation pool elevation 692.70 ft above NGVD29 -1.11
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1969-01-01 (source: TWDB)
1993-10-01 (source: TWDB) : GIS Data
2003-07-01 (source: TWDB) : GIS Data
2015-06-01 (source: TWDB) : GIS Data
Data Source USGS:08090900

Lake Location