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Date: 2011-08-09 15:24:11Upper Iowa River Decorah Iowa Trout River Allamakee County Iowa Trout Run Karst Algific talus slope Sinkhole Cold Water Spring State Preserve Geography of the United States Driftless Area Iowa | Microsoft Word - AMS New.docAdd to Reading ListSource URL: northeastiowarcd.orgDownload Document from Source WebsiteFile Size: 1,74 MBShare Document on Facebook |