Lake McQueeney is a small, unincorporated community in Guadalupe County, Texas, centered around the lake of the same name. It's a popular destination for recreation and lakeside living. Lake McQueeney is a reservoir on the Guadalupe River located 5 miles (8 km) west of Seguin in Guadalupe County, Texas. It was formed in 1928 by the construction of a dam to provide hydroelectric power to the area.