See also:

• Regional: North America: United States: Science and Environment  (81)

• Building Environment Council of Ohio - A non-profit professional association interested in problems within buildings arising from pollutants in and immediately around buildings.
• Division of Water - Ohio - Collects data on surface and ground water, produces maps, regulates construction of dams, operates canal systems, and administers floodplain management program.
• Federal Valley Watershed Group - Works to restore and preserve water quality, environmental health, and recreation in the watershed. Calendar of events and list of projects.
• Muskingum Watershed Conservancy District - A system of dams and reservoirs working as a network to provide flood protection and flood reduction for 18 Ohio counties. camp includes news and details about how the system works.
• Office of Pollution Prevention - Provides a list of materials that are recycled, reclaimed or exchanged. Also includes links to lists of companies which recycle these materials
• Ohio Division of Soil & Water Conservation - Provides information on county districts, watershed programs, education and calendar.
• Ohio Environmental Protection Agency - Mission in to protect human health and the environment through responsible regulation. Site provides publications, calendar, and news releases.
• Ohio Statewide Environmental Network - Purpose is to formalize a network of existing Ohio technical assistance organizations and agencies so that they may better provide environmental assistance to small- and medium-sized manufactures.
• Ohio Trees - Ohio State University provides information about trees in general, historic trees, identification key, and descriptions and images of common species in the state.
• Ohioview - Promotes the low-cost distribution of US Government civilian satellite data for public use.
• Planet Ohio WebRing - A ring of Ohio web sites on astronomy, birding, butterflies, gardening, herpetology, mycology, spiders, and wildflowers.
• Where to Have Your Water Tested - State of Ohio list of approved testing laboratories.