Lake Granbury: 87.9% full as of 2026-10-28

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 2026-10-28 87.9 690.64 117,798 116,889 132,949 7,421
1 day prior 2026-10-27 87.9 690.64 117,798 116,889 132,949 7,421
2 days prior 2026-10-26 87.9 690.64 117,798 116,889 132,949 7,421
1 week prior 2026-10-21 88.3 690.70 118,243 117,334 132,949 7,443
1 month prior 2026-09-28 84.4 690.00 113,123 112,214 132,949 7,187
3 months prior 2026-07-28 93.7 691.65 125,479 124,570 132,949 7,789
6 months prior 2026-04-28 99.1 692.55 132,637 131,728 132,949 8,117
1 year prior 2025-10-28 95.3 691.92 127,595 126,686 132,949 7,888
*

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 2026-10-28 23:45 690.65 692.70 -2.05 below operating pool
1 hour prior 2026-10-28 22:45 690.65 692.70 -2.05 below operating pool
2 hours prior 2026-10-28 21:45 690.65 692.70 -2.05 below operating pool
6 hours prior 2026-10-28 17:45 690.63 692.70 -2.07 below operating pool
12 hours prior 2026-10-28 11:45 690.63 692.70 -2.07 below operating pool
24 hours prior 2026-10-27 23:45 690.64 692.70 -2.06 below operating pool
48 hours prior 2026-10-26 23:45 690.63 692.70 -2.07 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
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
USGS Monitoring Location USGS:08090900

Lake Location