Reservoir Storage Summary for River Basins on 2026-08-11

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
2026-08-11 2026-08-10 2026-08-09 2026-08-04 2026-07-11 2026-05-11 2026-02-11 2025-08-11
Brazos 87.5 87.6 87.8 88.3 89.0 88.3 85.9 92.9
Canadian 37.7 37.7 37.8 38.0 39.1 39.8 41.6 42.8
Colorado 67.3 67.4 67.5 67.8 63.3 60.6 61.1 68.2
Cypress 91.7 91.8 92.0 92.6 94.9 93.2 95.0 97.0
Guadalupe 98.5 98.5 98.5 98.5 62.5 60.2 61.8 70.5
Lavaca 95.0 95.3 95.4 96.3 97.1 77.6 58.6 92.8
Neches 74.9 75.1 75.2 75.9 77.1 75.9 72.8 79.9
Nueces 43.2 43.1 42.9 37.2 15.4 8.4 9.3 14.4
Red 90.2 90.3 90.4 90.9 92.2 91.2 89.6 94.8
Rio Grande 33.0 33.1 33.2 33.4 28.2 27.3 28.7 26.5
Sabine 91.2 91.3 91.5 92.3 94.7 93.0 86.8 94.9
San Antonio 29.9 29.9 29.9 29.7 9.0 3.9 4.4 6.4
San Jacinto 98.0 98.1 98.2 98.1 98.7 97.7 95.8 98.7
Sulphur 87.8 87.9 88.1 89.1 91.9 87.3 78.6 96.5
Trinity 92.5 92.6 92.8 93.8 95.8 95.9 93.2 97.4
*

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 87.5 3,151,232 3,130,504 3,576,076
Canadian 37.7 249,777 211,363 561,066
Colorado 67.3 2,763,327 2,706,192 4,019,576
Cypress 91.7 651,173 543,414 592,377
Guadalupe 98.5 412,172 403,472 409,821
Lavaca 95.0 156,299 151,086 158,975
Neches 74.9 2,634,170 2,604,894 3,477,212
Nueces 43.2 397,275 396,996 918,882
Red 90.2 3,525,643 2,232,110 2,474,646
Rio Grande 33.0 1,395,331 1,163,239 3,520,940
Sabine 91.2 5,587,793 3,528,651 3,868,328
San Antonio 29.9 76,165 76,165 254,823
San Jacinto 98.0 542,995 539,167 549,895
Sulphur 87.8 544,987 350,212 399,063
Trinity 92.5 6,343,730 6,265,881 6,776,855
**

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