Reservoir Storage Summary for River Basins on 2026-08-12

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
2026-08-12 2026-08-11 2026-08-10 2026-08-05 2026-07-12 2026-05-12 2026-02-12 2025-08-12
Brazos 87.4 87.5 87.7 88.2 88.9 88.4 85.9 92.9
Canadian 37.6 37.7 37.7 38.0 39.1 39.8 41.5 42.8
Colorado 67.2 67.3 67.4 67.8 63.2 60.6 61.1 68.2
Cypress 91.5 91.6 91.8 92.5 94.8 93.1 94.9 96.8
Guadalupe 98.4 98.4 98.5 98.5 62.6 60.1 61.8 70.5
Lavaca 94.4 94.9 95.3 96.0 97.2 77.0 58.4 92.5
Neches 74.8 74.9 75.1 75.8 77.1 75.9 72.9 79.8
Nueces 43.2 43.2 43.1 39.5 15.4 8.4 9.3 14.4
Red 90.1 90.2 90.3 90.8 92.1 91.2 89.6 95.0
Rio Grande 33.0 33.0 33.1 33.4 28.0 27.3 28.7 26.4
Sabine 91.0 91.2 91.3 92.0 94.7 93.1 86.8 94.8
San Antonio 29.9 29.9 29.9 29.8 9.1 3.9 4.3 6.4
San Jacinto 98.1 98.1 98.1 98.2 98.9 98.0 95.8 98.6
Sulphur 87.6 87.8 87.9 88.9 91.9 87.8 78.6 96.3
Trinity 92.2 92.4 92.6 93.6 95.8 95.9 93.2 97.3
*

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 87.4 3,145,329 3,125,994 3,576,076
Canadian 37.6 249,477 211,063 561,066
Colorado 67.2 2,759,404 2,702,269 4,019,576
Cypress 91.5 649,605 542,258 592,377
Guadalupe 98.4 411,662 403,380 409,821
Lavaca 94.4 155,305 150,092 158,975
Neches 74.8 2,629,916 2,600,640 3,477,212
Nueces 43.2 397,490 397,211 918,882
Red 90.1 3,518,304 2,229,383 2,474,646
Rio Grande 33.0 1,392,053 1,160,736 3,520,940
Sabine 91.0 5,576,983 3,521,950 3,868,328
San Antonio 29.9 76,190 76,190 254,823
San Jacinto 98.1 543,452 539,624 549,895
Sulphur 87.6 543,307 349,502 399,063
Trinity 92.2 6,329,119 6,251,344 6,776,855
**

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