Reservoir Storage Summary for River Basins on 2026-05-23

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
2026-05-23 2026-05-22 2026-05-21 2026-05-16 2026-04-23 2026-02-23 2025-11-23 2025-05-23
Brazos 88.5 88.4 88.3 88.3 87.6 86.0 87.1 91.5
Canadian 39.3 39.3 39.3 39.6 40.3 41.4 42.2 38.3
Colorado 61.5 61.2 60.8 60.5 60.3 60.9 62.9 42.5
Cypress 97.1 97.1 97.0 96.9 96.5 94.2 95.6 99.2
Guadalupe 60.1 60.1 60.1 59.9 59.9 61.6 64.6 48.2
Lavaca 82.9 82.1 79.6 76.1 57.5 57.3 69.6 73.4
Neches 75.7 75.7 75.7 75.7 76.0 73.7 72.5 99.9
Nueces 8.8 8.8 8.6 8.3 7.8 9.0 10.7 15.7
Red 91.1 91.1 91.1 91.1 91.4 91.0 91.3 95.8
Rio Grande 27.1 27.0 26.9 27.2 27.6 28.6 27.1 23.0
Sabine 93.2 93.3 93.3 92.7 91.2 88.3 87.1 99.5
San Antonio 3.9 3.9 3.8 3.8 3.9 4.3 5.1 1.9
San Jacinto 96.5 96.4 96.3 97.8 93.5 96.0 95.6 99.5
Sulphur 88.3 88.3 88.3 88.0 86.2 85.2 83.7 100.0
Trinity 95.8 95.7 95.7 95.8 95.6 94.6 92.6 99.8
*

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 88.5 3,233,199 3,163,622 3,576,076
Canadian 39.3 259,083 220,669 561,066
Colorado 61.5 2,528,666 2,471,531 4,019,576
Cypress 97.1 663,402 548,633 565,174
Guadalupe 60.1 246,246 246,175 409,821
Lavaca 82.9 137,040 131,827 158,975
Neches 75.7 2,660,722 2,630,812 3,477,212
Nueces 8.8 81,495 81,216 918,882
Red 91.1 3,588,742 2,254,085 2,474,646
Rio Grande 27.1 1,079,861 955,589 3,520,940
Sabine 93.2 5,680,616 3,606,148 3,868,328
San Antonio 3.9 9,950 9,950 254,823
San Jacinto 96.5 534,290 530,462 549,895
Sulphur 88.3 501,407 352,291 399,063
Trinity 95.8 6,603,822 6,489,328 6,776,855
**

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