Reservoir Storage Summary for River Basins on 2025-09-01

Definition Map for River Basins

Percent Full

Most recent 1 day prior 2 days prior 1 week prior 1 month prior 3 months prior 6 months prior 1 year prior
2025-09-01 2025-08-31 2025-08-30 2025-08-25 2025-08-01 2025-06-01 2025-03-01 2024-09-01
Brazos 91.9 91.9 91.8 92.2 93.4 92.1 88.9 88.5
Canadian 42.8 42.7 42.6 42.5 42.5 38.3 36.5 36.1
Colorado 66.9 66.9 66.9 67.3 68.9 43.7 44.4 42.5
Cypress 98.1 98.1 98.0 97.0 98.2 99.3 99.2 97.3
Guadalupe 69.4 69.4 69.5 69.8 70.6 48.7 51.4 58.7
Lavaca 87.9 88.2 88.4 89.6 96.0 83.3 68.5 94.9
Neches 78.9 78.6 78.2 78.6 81.0 99.8 99.8 99.3
Nueces 13.4 13.4 13.5 13.7 14.7 15.3 17.9 24.5
Red 94.3 94.3 94.3 94.4 95.2 96.0 84.4 88.9
Rio Grande 26.1 26.1 26.1 26.2 27.0 23.3 22.2 19.4
Sabine 93.1 93.1 92.9 93.3 96.1 99.1 99.1 90.3
San Antonio 6.1 6.1 6.1 6.2 6.4 2.1 2.4 3.3
San Jacinto 100.0 99.6 98.9 99.0 99.4 100.0 97.1 98.8
Sulphur 93.3 93.2 93.1 93.8 97.8 100.0 99.5 94.5
Trinity 96.5 96.2 95.9 96.3 98.2 99.8 96.6 94.2
*

Percent Full is based on Conservation Storage and Conservation Capacity.

Recent Conditions

Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Brazos 91.9 3,310,343 3,287,740 3,576,076
Canadian 42.8 278,452 240,038 561,066
Colorado 66.9 2,746,787 2,689,652 4,019,576
Cypress 98.1 694,227 554,498 565,174
Guadalupe 69.4 284,335 284,264 409,821
Lavaca 87.9 145,019 139,806 158,975
Neches 78.9 2,772,317 2,742,192 3,477,212
Nueces 13.4 123,628 123,349 918,882
Red 94.3 3,633,705 2,333,838 2,474,646
Rio Grande 26.1 1,126,663 920,486 3,520,940
Sabine 93.1 5,651,421 3,600,083 3,867,301
San Antonio 6.1 15,483 15,483 254,823
San Jacinto 100.0 558,722 549,895 549,895
Sulphur 93.3 539,824 372,407 399,063
Trinity 96.5 6,622,514 6,542,620 6,776,855
**

The grey areas represent coastal basins that have no contributing reservoirs present.