Welsh Reservoir (Cypress River Basin)
Welsh Reservoir, located in Titus County approximately one mile northwest of Cason, is owned and operated by AEP-Southwestern Electric Power Company (SWEPCO) as a cooling reservoir for its Welsh Power Plant. The dam was completed in 1975 across Swauano Creek, a tributary of Big Cypress Creek and was designed by Freese and Nichols. The dam is a 4,720 foot long zoned earth fill embankment with a 20-foot wide crest and an uncontrolled spillway. The top of the dam is at elevation 335.0 feet above mean sea level and has a maximum height of 60.5 feet above the streambed. Welsh Reservoir has a drainage area of approximately 21.2 square miles, and is designed to be operated at a normal pool elevation of 320.0 feet above mean sea level. The original designed storage capacity of the reservoir at the normal operating level is 23,587 acre-feet with a surface area of 1,365 acres per owner.