Reference
Chequamegon-Nicolet National Forest Ottawa National Forest USDA Forest Service National Headquarters Kemp Natural Resources Station (Woodruff/Lake Tomahawk) Trees for Tomorrow Northern Highland - American Legion State Forest Wisconsin Department of Natural Resources Wisconsin State Natural Areas - Vilas and Oneida counties WI Dept. of Natural Resources Lakes Program Wisconsin DNR Lake Maps UW-Center for Limnology (the study of inland waters) Trout Lake Station Wisconsin Association of Lakes Citizens Lake Monitoring Network Clean Boats, Clean Waters Program Minnesota Shallow Lakes Program US Geological Survey Lake Monitoring and Lakes Studies UW-Extension Lakes Program Understanding Lake Data Treehaven Natural Resources Education Facility Discover the Forest
The State of America's Forests: An Interactive Guide
