Guadalupe River Basin Reservoirs: Monitored Water Supply Reservoirs are 59.6% full on 2026-04-20

Historical Data

Date Percent Full Reservoir Storage
(acre-ft) 		Conservation Storage
(acre-ft) 		Conservation Capacity
(acre-ft)
Most recent 2026-04-20 59.6 244,216 244,145 409,821
1 day prior 2026-04-19 59.6 244,216 244,145 409,821
2 days prior 2026-04-18 59.6 244,222 244,151 409,821
1 week prior 2026-04-13 59.8 245,076 245,005 409,821
1 month prior 2026-03-20 60.7 248,878 248,807 409,821
3 months prior 2026-01-20 62.1 254,724 254,653 409,821
6 months prior 2025-10-20 66.4 272,168 272,097 409,821
1 year prior 2025-04-20 49.6 203,402 203,331 409,821
*

 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 2026-04-20 Water Supply and Flood Control 58.4 886.35 -22.65 221,102 221,031 378,781 5,782
Coleto Creekas of 2026-04-20 Water Supply 74.5 94.61 -3.39 23,114 23,114 31,040 2,173