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.
- http://www.mwcd.org/

Ohio Wildlife Resources
- Articles and notes on various species of animals in Ohio.
- http://www.dnr.state.oh.us/wildlife/resources/

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.
- http://www.federalcreek.org/

Ohio's Wildlife Areas
- Wildlife maps of Ohio, divided by regions.
- http://www.dnr.state.oh.us/wildlife/Hunting/wildlifeareas/wildare.htm

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.
- http://www.dnr.state.oh.us/wildlife/resources/wws/wws.htm

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
- http://www.epa.state.oh.us/opp/wastex.html

Ohio Soil and Water Conservation Resources
- Provides links to districts, organizations and projects in the state.
- http://www.nacdnet.org/resources/OH.htm

Ohio Division of Soil & Water Conservation
- Provides information on county districts, watershed programs, education and calendar.
- http://www.ohiodnr.com/odnr/soil+water/

Highest Named Summits of Ohio
- List of summits with elevations above 1000 feet and locations.
- http://www.americasroof.com/highest/oh.shtml

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.
- http://ohioline.osu.edu/b700/

Planet Ohio WebRing
- A ring of Ohio web sites on astronomy, birding, butterflies, gardening, herpetology, mycology, spiders, and wildflowers.
- http://t.webring.com/hub?ring=planetohio&list

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.
- http://www.dnr.state.oh.us/water/

Where to Have Your Water Tested
- State of Ohio list of approved testing laboratories.
- http://ohioline.osu.edu/aex-fact/0315.html

Ohio Environmental Protection Agency
- Mission in to protect human health and the environment through responsible regulation. Site provides publications, calendar, and news releases.
- http://www.epa.state.oh.us/

The Birds of Ohio
- A checklist of Ohio bird species.
- http://www.aves.net/birds-of-ohio/

Ohioview
- Promotes the low-cost distribution of US Government civilian satellite data for public use.
- http://www.ohioview.org/

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.
- http://www.epa.state.oh.us/opp/sen-01/sen-01.html