Reservoir Storage Summary for River Basins on 2026-09-01

Definition Map for River Basins

Percent Full

Today Yesterday 2 days ago 1 week ago 1 month ago 3 months ago 6 months ago 1 year ago
2026-09-01 2026-08-31 2026-08-30 2026-08-25 2026-08-01 2026-06-01 2026-03-01 2025-09-01
Brazos 84.9 85.0 85.1 85.6 88.7 89.4 85.7 91.9
Canadian 36.8 36.9 36.9 37.1 38.2 39.5 41.4 42.8
Colorado 65.4 65.5 65.6 66.0 68.0 63.4 60.7 66.9
Cypress 88.1 88.2 88.4 89.1 93.4 93.6 93.4 98.2
Guadalupe 98.1 98.1 98.2 98.2 98.6 60.7 61.4 69.4
Lavaca 88.6 88.8 89.1 90.4 97.4 100.0 56.3 87.9
Neches 71.7 71.9 72.0 72.7 76.3 76.1 73.7 78.9
Nueces 41.6 41.7 41.8 42.2 30.2 12.5 8.8 13.4
Red 87.1 87.2 87.3 88.2 91.2 91.8 91.0 94.3
Rio Grande 31.6 31.7 31.7 32.0 33.7 27.6 28.4 26.9
Sabine 88.9 88.9 89.1 89.6 92.8 94.1 88.1 93.1
San Antonio 29.5 29.6 29.6 29.7 29.6 4.0 4.2 6.1
San Jacinto 95.4 96.5 96.6 96.5 98.4 99.5 96.0 100.0
Sulphur 83.7 83.8 84.0 85.0 89.7 90.1 84.7 93.4
Trinity 88.6 88.7 88.9 89.7 94.3 96.0 94.5 96.6
*

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 84.9 3,047,921 3,035,486 3,576,076
Canadian 36.8 245,087 206,673 561,066
Colorado 65.4 2,687,355 2,630,220 4,019,576
Cypress 88.1 625,129 522,137 592,377
Guadalupe 98.1 404,083 402,197 409,821
Lavaca 88.6 146,065 140,852 158,975
Neches 71.7 2,523,944 2,494,668 3,477,212
Nueces 41.6 382,960 382,681 918,882
Red 87.1 3,371,559 2,154,635 2,474,646
Rio Grande 31.6 1,337,610 1,112,631 3,520,940
Sabine 88.9 5,457,271 3,438,639 3,868,328
San Antonio 29.5 75,231 75,231 254,823
San Jacinto 95.4 528,546 524,718 549,895
Sulphur 83.7 508,788 333,974 399,063
Trinity 88.6 6,080,897 6,003,708 6,776,855
**

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