Virginia Tech, Extension Service2019-06-242019-06-241946-04-12http://hdl.handle.net/10919/90544View of rock-filled gully. Channel of approach of Terpstra4 x 5 inchesimage/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10Soil and Water ConservationLand DrainageWatershedPhotographBiological Systems Engineering, Virginia Tech