I currently am outlining floodplain boundaries in ArcMap 10. I created a contour line to show the outline from a flood. So I currently have a polyline contour. I want to fill in this polyline with cross hatches. I am assuming that to do this I need to turn it into a polygon? I am not quite sure how to go about this but in the end I basically want a cross hatch outline of the inundation area.
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