Delineating runoff processes and critical runoff source areas in a pasture hillslope of the Ozark Highlands.

The article presents a study on the delineation of critical runoff source areas and runoff mechanisms in a pasture hillslope of Ozark Highlands Trail in Arkansas. The objective of the study is to understand the complexity of runoff production from pasture watershed using a field-scale approach. Runoffs of the three adjacent hillslope plots situated at the Savoy Experimental Watershed in north-west Arkansas were isolated, and each plot was equipped with paired subsurface saturation and surface runoff sensors, shallow groundwater wells, H-flumes and rain gauges. Results show that there is variance in infiltration excess and saturation excess runoff processes. It states that the methodology presented can be used in locating areas for best management practice (BMP) implementation.