Guadalupe River Basin Reservoirs: Monitored Water Supply Reservoirs are 62.9% full on 2026-07-04

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Most recent 2026-07-04 62.9 257,823 257,752 409,821
1 day prior 2026-07-03 62.9 258,048 257,977 409,821
2 days prior 2026-07-02 63.0 258,273 258,202 409,821
1 week prior 2026-06-27 63.3 259,474 259,403 409,821
1 month prior 2026-06-04 60.7 248,951 248,880 409,821
3 months prior 2026-04-04 60.2 246,707 246,636 409,821
6 months prior 2026-01-04 62.8 257,566 257,495 409,821
1 year prior 2025-07-04 50.4 207,748 206,554 409,821
*

 Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

Area Map

recent reservoir storage map

Reservoir Storage

Reservoir Type Percent Full Water Level
(ft) 		Height Above Conservation Pool
(ft) 		Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft) 		Surface Area
(acres)
Canyonas of 2026-07-04 Water Supply and Flood Control 61.2 888.21 -20.79 232,029 231,958 378,781 5,968
Coleto Creek Water Supply 83.0 95.78 -2.22 25,748 25,748 31,040 2,338