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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 05389500 Mississippi River at McGregor, IA


Clayton County, Iowa
Hydrologic Unit Code 07060001
Latitude  43°01'37.3", Longitude  91°10'21" NAD27
Drainage area 67,500  square miles
Gage datum 604.84 feet above NGVD29
Location of the site in Iowa