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Relief shown by contours and spot heights. "E.M. Douglas, Geographer in charge. Topography by R.H. Sargent. Triangulation by T.M. Bannon. Surveye... U.S. Geological Survey.
1996. Federal Emergency Management Agency. Q3 flood data for Arizona, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency Manage... Federal Emergency Management Agency.