Qualitative reconnaissance of physical processes based on regional estimate and field observations. Quantitative estimate of runoff peak, volume, and sediment yield using standard techniques. Examples of situations which need stream channel restorations, large disturbed areas, and disturbed areas with more than 1 drainage. Qualitative reconnaissance of physical processes based on regional estimates and field observations. These techniques are most appropriate for an analysis of land hydrology and sedimentation.
Mines are in a semiarid environments where sediment yield is large and highly variable.
Erosion generally results from short duration and high-intensity rainfall of limited areal extent. Data were collected from reclaimed and nearby unmined areas. Total-rill density was positively correlated with the product of hillslope length and hillslope gradient and inversely correlated with age since reclamation. Gullies on some reclaimed hillslopes developed on steep or convex hillslope segments and below subtle topographic depressions that may have functioned as moisture-collection areas. Reclaimed valleys often were narrow or v-shaped in cross section.