Figure 8-25.-Ridge and spur.fall of a stream, the farther each contour parallels it. Thecurve of the contour crossing always points upstream.A draw is a less-developed stream course wherethere is essentially no level ground and, therefore, littleor no maneuvering room within its sides and towardsthe head of the draw. Draws occur frequently along thesides of ridges at right angles to the valley between them.Contours indicating a draw are V-shaped with the pointof the V toward the head of the draw.A ridge is a line of high ground that normally hasminor variations along its crest (fig. 8-25). The ridge isnot simply a line of hills; all points of the ridge crest areappreciably higher than the ground on both sides of theridge.A spur is usually a short continuously sloping lineof higher ground normally jutting out from the side of aridge (fig. 8-25). A spur is often formed by two roughlyparallel streams that cut draws down the side of theridge.A saddle is a dip or low point along the crest of aridge. A saddle is not necessarily the lower groundbetween the two hilltops; it maybe simply a dip or breakalong an otherwise level ridge crest (fig. 8-26).A depression is a low point or sinkhole, surroundedon all sides by higher ground (fig. 8-27).Figure 8-26.-Saddle.Figure 8-27.-Depression.8-19
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