Virginia Tech, Extension Service2019-11-192019-11-191939-06-08http://hdl.handle.net/10919/95782W-I installation. Standing below weir. Looking upstream at nappe of water flooding over weir.positive, 3.75 x 5 in.image/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10Agricultural EngineeringWatershedWater RunoffSoil and Water ConservationPhotographBiological Systems Engineering, Virginia Tech