Virginia Tech, Extension Service2019-11-192019-11-191905-04-18http://hdl.handle.net/10919/95742Photo of channel in open field with hat and camera box for scale.positive, 5 x 7 in.image/jpegCreative Commons Public Domain Mark 1.0Applied ScienceAgricultureVirginia Extension - Project 10Agricultural EngineeringErosionSoil ErosionSoil and Water ConservationPhotograph