Spring Hollow Reservoir
Introduction '''Spring Hollow Reservoir''' is a ,  side-stream reservoir in Roanoke County, Virginia with the largest roller-compacted concrete dam east of the Mississippi  Having commenced operation in 1996, it is now the main source of water for residents of Roanoke County.
History and Operations Before the reservoir's construction, an ''ad hoc'' set of wells and water purchases served Roanoke County. In 1986, county officials, anticipating increased water needs, sought and received voter approval for the Spring Hollow Reservoir.Water is pumped from the nearby Roanoke River to the reservoir.
References
External links *  Flickr image of reservoir and dam