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Surface Runoff along Two Agricultural Hillslopes with Contrasting Soils

^a Dep. of Natural Resource Sci. and Landscape Architecture, Univ. of Maryland, 1112 H.J. Patterson Hall, College Park, MD 20742
^b Pasture Systems and Watershed Management Research Unit, USDA-ARS, Curtin Rd., University Park, PA 16802
^c Dep. of Crop and Soil Sci., The Pennsylvania State Univ., 116 A.S.I. Building, University Park, PA 16802

View larger version (56K): [in a new window]   Fig. 1. Land use and flume locations at 39.5-ha watershed FD-36.

View larger version (36K): [in a new window]   Fig. 2. Location of surface runoff flumes, topography, and soils (parent material and drainage class) at FD-36 watershed. Contour interval is 0.5 m.

View larger version (17K): [in a new window]   Fig. 3. Layout of theta probe, piezometers, flume, and paired wells and surface runoff indicators. Wells are on a 10- x 10-m grid.

View larger version (24K): [in a new window]   Fig. 4. Rainfall depth and peak intensity with symbol size proportional to runoff volume at Site S2. Points with cross exhibited surface saturation, empty points did not. Vertical gray lines delimit 0.9- to 2.0-cm rainfall depth group discussed in text.

View larger version (25K): [in a new window]   Fig. 5. Temporal correspondence between runoff and surface saturation at Site S2 during 24 Sept. 2001 event.