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Site Map for Iowa

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Boating safety tips are available from the U.S. Coast Guard.

NOTE: Station Numbers for Iowa precipitation gages have changed (see list).


USGS 06600100 Floyd River at Alton, IA


Sioux County, Iowa
Hydrologic Unit Code 10230002
Latitude  42°58'55", Longitude  96°00'03" NAD27
Drainage area 268  square miles
Gage datum 1,269.55 feet above NGVD29
Location of the site in Iowa