Virginia Tech, Extension Service2019-07-182019-07-181957-09-25http://hdl.handle.net/10919/91749looking down stream into culvert. Before channel improvementnegative, 4x5 in.image/jpegIn CopyrightApplied ScienceAgricultural EngineeringAgricultureVirginia Extension - Project 10Runoff RatesWater RunoffSoil and Water ConservationProject 10 Image - VA Halifax - 1957-09-25PhotographBiological Systems Engineering, Virginia Tech