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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 06483500 Rock River near Rock Valley, IA

Sioux County, Iowa
Hydrologic Unit Code 10170204
Latitude  43°12'52", Longitude  96°17'39" NAD27
Drainage area 1,592  square miles
Gage datum 1,222.54 feet above NGVD29
Location of the site in Iowa