Morphometric analysis of six small areas in the unglaciated part of southern Indiana provided data for determination of influence of lithology, per cent of unconsumed upland (stage of cycle), and regional relief upon scale and form properties of third-order drainage basins measured in the field and from topographic maps and air photos. Ten drainage basins in each of six different localities were compared with respect to length dimensions of area, perimeter, overland flow, stream lengths, drainage density, and local relief, and with respect to dimensionless form properties of valley-side slopes, stream gradients, hypsometric curve forms and integrals, bifurcation ratios, length ratios, circularity, and azimuth relations of slope and channels. Differences between areas were tested for significance by the analysis of var¬iance.
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