Building Environment Council of Ohio - A non-profit professional association interested in problems within buildings arising from pollutants in and immediately around buildings.

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.

Frogs and Toads of Ohio - An introduction to the natural history of the frogs and toads of the state.

Ohioview - Promotes the low-cost distribution of US Government civilian satellite data for public use.

The Birds of Ohio - A checklist of Ohio bird species.

Ohio Environmental Protection Agency - Mission in to protect human health and the environment through responsible regulation. Site provides publications, calendar, and news releases.

Where to Have Your Water Tested - State of Ohio list of approved testing laboratories.

Highest Named Summits of Ohio - List of summits with elevations above 1000 feet and locations.

Ohio's Lake Erie Coastal Resources Inventory (LECRI) - Provides a way to search for and discover useful information about Lake Erie, its coastal lands and watersheds, and the area's physical cultural, recreational and economic resources.

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.

Reptiles in Ohio - County Surveys - Offers a county by county survey of reptiles.

Planet Ohio WebRing - A ring of Ohio web sites on astronomy, birding, butterflies, gardening, herpetology, mycology, spiders, and wildflowers.

Ohio's Wildlife Areas - Wildlife maps of Ohio, divided by regions.

Watchable Wildlife Viewing Sites - A program designed to enhance wildlife viewing opportunities for the public across the state. Provides a listing of 80 sites throughout Ohio broken down into district divisions.

Ohio's Conservancy Districts - Division of water fact sheet supplied by the Ohio Department of Natural Resources.

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.