The Ohio River watershed is home to a number of fascinating species. More than 160 species of fish have been found in its waters.

The area also has some of the greatest biodiversity of freshwater mussels, which are critical to the health of our ecosystems and waterways. Unfortunately, their numbers are dwindling. At the turn of the century, the Ohio River basin was home to 127 of the 297 freshwater mussel species native to North America. Since then, human changes in the environment have taken their toll: 11 mussel species are extinct, and 46 others are classified as endangered or species of concern.

Map of the Ohio River Watershed

Map of Ohio River Watershed


Your Donation Makes a Big Impact

  • $25 can provide food for the freshwater mussel “ambassadors” we use in our Mussels in the Classroom program.
  • $100 can buy water quality equipment to enable us to identify pollution problems.
  • $500 can help 50 students be River Explorers for a day of learning in a river or creek.
  • $1,000 can plant 100 native trees to restore critical habitat and help keep our water clean.