Reservoir Storage Summary for River Basins on 2026-08-19

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
2026-08-19 2026-08-18 2026-08-17 2026-08-12 2026-07-19 2026-05-19 2026-02-19 2025-08-19
Brazos 86.5 86.6 86.7 87.4 89.7 88.2 86.2 92.5
Canadian 37.3 37.4 37.4 37.6 38.8 39.5 41.5 42.6
Colorado 66.6 66.7 66.7 67.2 67.9 60.4 61.0 67.7
Cypress 90.2 90.3 90.5 91.5 95.0 92.7 94.9 96.3
Guadalupe 98.3 98.3 98.3 98.4 97.4 59.9 61.8 70.1
Lavaca 92.4 92.6 92.9 94.3 100.0 75.6 58.1 90.9
Neches 73.7 73.8 74.0 74.8 77.3 75.6 73.5 79.1
Nueces 42.8 42.9 43.0 43.2 14.9 8.3 9.2 14.0
Red 89.2 89.3 89.4 90.1 91.9 90.9 91.1 94.7
Rio Grande 32.5 32.6 32.6 32.9 30.5 26.9 28.6 26.2
Sabine 90.2 90.3 90.5 91.0 94.8 92.9 88.1 94.0
San Antonio 29.8 29.8 29.9 29.9 26.6 3.8 4.3 6.3
San Jacinto 97.3 97.4 97.5 98.1 100.0 97.5 96.4 98.3
Sulphur 86.2 86.3 86.5 87.5 91.7 87.8 85.7 95.2
Trinity 90.9 91.1 91.3 92.2 96.2 95.7 94.7 96.9
*

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 86.5 3,107,603 3,093,206 3,576,076
Canadian 37.3 247,905 209,491 561,066
Colorado 66.6 2,733,998 2,676,863 4,019,576
Cypress 90.2 639,425 534,291 592,377
Guadalupe 98.3 408,074 402,874 409,821
Lavaca 92.4 152,053 146,840 158,975
Neches 73.7 2,593,231 2,563,955 3,477,212
Nueces 42.8 393,478 393,199 918,882
Red 89.2 3,459,068 2,208,583 2,474,646
Rio Grande 32.5 1,373,826 1,145,091 3,520,940
Sabine 90.2 5,527,716 3,489,042 3,868,328
San Antonio 29.8 76,013 76,013 254,823
San Jacinto 97.3 538,821 534,993 549,895
Sulphur 86.2 531,208 344,129 399,063
Trinity 90.9 6,239,579 6,162,045 6,776,855
**

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