Possum Kingdom Lake: 91.9% full as of 2026-08-09

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 2026-08-09 91.9 996.50 494,789 494,789 538,139 16,760
1 day prior 2026-08-08 92.1 996.55 495,628 495,628 538,139 16,783
2 days prior 2026-08-07 92.3 996.61 496,635 496,635 538,139 16,812
1 week prior 2026-08-02 93.2 996.90 501,531 501,531 538,139 16,945
1 month prior 2026-07-09 92.9 996.82 500,176 500,176 538,139 16,908
3 months prior 2026-05-09 93.5 997.01 503,397 503,397 538,139 16,996
6 months prior 2026-02-09 91.0 996.20 489,783 489,783 538,139 16,610
1 year prior 2025-08-09 99.2 998.77 534,031 534,031 538,139 17,805
*

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 2026-08-09 23:15 996.46 999.00 -2.54 below operating pool
1 hour prior 2026-08-09 22:15 996.44 999.00 -2.56 below operating pool
2 hours prior 2026-08-09 21:15 996.48 999.00 -2.52 below operating pool
6 hours prior 2026-08-09 17:15 996.47 999.00 -2.53 below operating pool
12 hours prior 2026-08-09 11:15 996.50 999.00 -2.50 below operating pool
24 hours prior 2026-08-08 23:15 996.52 999.00 -2.48 below operating pool
48 hours prior 2026-08-07 23:15 996.58 999.00 -2.42 below operating pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1941-01-01
Vertical datum NGVD29
Dead pool elevation 874.80 ft above NGVD29
Service spillway crest elevation 987.00 ft above NGVD29
Emergency spillway crest elevation 1,000.00 ft above NGVD29
Top of dam elevation 1,024.00 ft above NGVD29
Conservation pool elevation 999.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1939-01-01 (source: BRA)
1944-01-01 (source: TWDB)
1962-01-01 (source: BRA)
1974-01-01 (source: BRA)
1994-06-01 (source: TWDB) : GIS Data
2005-01-01 (source: TWDB) : GIS Data
2016-12-01 (source: TWDB) : GIS Data
Data Source USGS:08088500
USGS Monitoring Location USGS:08088500

Lake Location