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1975 Assessment acres agency agricultural American elms animals aquatic aspen bear bicycle Bikeways bluebird brook trout Bulletin chub Conservation consin County crops deer Department of Natural DNR's effluents environment environmental feet fish management fishery Flambeau River frost pockets fry stocking grass gravel chub Gray Fox growth habitat harvest hunting inches industrial Iron County jelly ball Lake Michigan Lake Winnebago land legislation Madison ment metal miles Milwaukee Muskellunge Natural Resources Board nest northern Ozark minnow panfish Park PCBs pesticides pollution ponds population pounds prairie plants problem programs Reclamation recreation recycling region Research River basin River State Forest rock elm Rusk Counties Seas Branch Creek season sediments seeds shredder smelt snowshoe hare soils sources spawn species sturgeon spearing Sugar River temperatures timber tion trap trees trout streams ture walleye water quality waterfowl weeds wildlife Wiscon