Submitted to: ARS Workshop on Real World Infiltration
Publication Type: Abstract Only
Publication Acceptance Date: 7/25/1996
Publication Date: N/A
Citation: N/A Interpretive Summary:
Technical Abstract: Water and solute movement in a landscape is not all vertical, but may be lateral in subsurface positions through a hillslope. Subsurface lateral movement is prevalent in gently rolling landscapes with shallow water tables. We used bromide as a tracer to indicate subsurface lateral water flow patterns in a soybean (Glycine max) field on a Clarion loam (fine-loamy, mixed, mesic Typic Hapludoll) with a 5% slope. Bromide was applied in a trench 18 cm deep on 20 May 1993. In this wet year, 25% of applied bromide mass moved laterally in the subsurface extending to 6 m downslope, and minute amounts were detected near the surface extending to 15 m downslope. Over 70% moved vertically beneath the applied transect but only to the 90 cm depth. The occurrence of lateral water and solute movement should be considered in contaminant transport.