Original sentence: Fisher Reservoir.Spence Reservoir.The Upper Colorado River Authority manages dams that create reservoirs on the Upper Colorado River and its tributaries:.Twin Buttes Reservoir
Edited sentence: Fisher Reservoir, managed by the United States Army Corps of Engineers.Spence Reservoir, managed by the Colorado River Municipal Water District.The Upper Colorado River Authority does not directly manage or operate any dams.The authority has helped to provide financial and administrative support to other operating authorities to establish reservoirs on the Upper Colorado River and its tributaries:.Twin Buttes Reservoir, managed by the City of San Angelo