(see Fig. 9.11 for help). Estimate elevations to the nearest 50 feet. Using a pencil, sketch and label contours using a contour interval of 100 feet. Notice that the 0-foot and 100-foot contours have already been drawn. Each contour must go through points that have the same elevation as the contour-not near or next to but through. Contours should be deflected upstream where they cross stream drainages. Most contours end at the edge of the map. •500 •600 •600 •600 BM675 •600 •500 X 300 •500 •600 •550 •300 •400 •500 •500 300 •450 •400 •300 100 100 200 • .350 •300 •200 100 • 200 100 •200 250 Ocean 100