US Army Corps of Engineers, Rock Island District - Features information on this regional district's activities, environmental and recreational resources and issues, along with resources on navigation, flood protection, emergency response, land management, and engineering services. Upper Midwest Environmental Sciences Center - U.S. Geological Survey research programs addressing a wide range of topics, including Great Lakes ecosystems, invasive species, mercury in the environment, and ecosystem monitoring for the Upper Mississippi River system. 2001 Upper Mississippi River Flood - Photos of the 2001 flood at cities in Minnesota, Iowa, Illinois and Wisconsin. Environmental Law & Policy Center - A public interest environmental advocacy organization; features include publications, membership information, mailing list and funding resources. TPE - The Prairie Enthusiasts - Dedicated to the inventory, promotion, restoration, and protection of natural prairies in the Upper Midwest. Includes conference information, discussion area, news articles, and information about prairie flora and fauna. Midwest Regional Planning Organization - Facilitates regional planning to address the U.S. EPA regional haze regulations (adopted in 1999) in the five states of Illinois, Indiana, Michigan, Ohio, and Wisconsin. Illinois-Indiana Sea Grant College Program - Conducts research, education, and public outreach related to water resources in the Great Lakes region. Cooperatively administered by the University of Illinois and Purdue University. Natural Land Institute - Protecting and managing lands in Illinois and Wisconsin. Includes news, major acquisitions, volunteer opportunities, and membership information. Natural Connections - Database and maps of the green infrastructure in Illinois, Indiana and Wisconsin, from the Center for Neighborhood Technology and Openlands Project. Midwest Hazecam - Real-time air pollution visibility camera network for a number of cities in Illinois, Indiana, Minnesota, Missouri, Ohio and Wisconsin. Ground Water Atlas of the United States: Illinois, Indiana, Kentucky, Ohio, Tennessee - Online USGS report describes the groundwater resources of this 5-state region. Ground Water Atlas of the United States: Minnesota, Iowa, Wisconsin, and Michigan - Online USGS report describes the groundwater resources of this 4-state region. Upper Mississippi River National Wildlife and Fish Refuge - The Upper Mississippi NWR encompasses approximately 194,000 acres in parts of Minnesota, Wisconsin, Iowa, and Illinois. Includes information on refuges within its complex, including Trempealeau National Wildlife Refuge. U.S. Fish & Wildlife Service: Midwest Region - Principal federal agency responsible for conserving, protecting and enhancing fish, wildlife and plants and their habitat. Information on regional responsibilities, business opportunities, employment, assessments and contacts.