The U.S. Fish and Wildlife Service in cooperation with the U.S. Corps of Engineers has a series of very nice maps of the Mississippi from the bottom of Lake Pepin down to Port Byron (apx 10 miles north of Interstate 80 and Moline) The maps have good detail _of the river_ at a scale of three (3) inches to two (2) miles on the map of Pools 5 & 6.
For information on these maps call or write Rufuge Manager, Upper Mississippi River Wild Life and Fish Refuge, 51 East Forth Street, Room 101, Winona, MN 55387. The telephone is 507-452-4232. There are also District Managers at LaCrosse 608-782-6039 and at Lansing, iowa 319-533-4580 Tom Thomas M. Lufkin, St. Paul, MN
