Coleto Creek Reservoir is a reservoir on Coleto Creek and Perdido Creek located in Fannin, Texas, 15 miles (24 km) southwest of Victoria, Texas. The surface of the lake extends into Victoria and Goliad counties. The reservoir was formed in 1980 by the construction of a dam by the Guadalupe-Blanco River Authority to provide a power station cooling pond for electric power generation. Coleto Creek Reservoir is a venue for outdoor recreation, including fishing and boating.