They use sunlight and produce carbohydrates via photosynthesis to feed animals. Zooplankton, the small animals of the river, eat phytoplankton. Today, many plant species can be found in the valley. Such plants include oaks, hickories, tulips, and maples. Along the river's edge in marshes and still waters, sedge grasses and cattails can be found.
Many weeds live within the river and on the riverbed.
Animals are numerous in the river and its surroundings as well. The river provides a home for 200 to 250 species of fish. Around the river, many species of birds, insects, reptiles, and mammals can be found. Such animals include American goldfinches, owls, bald eagles, bees, deer ticks, wasps, garter snakes, painted turtles, timber rattlesnakes, chipmunks, deer mice, skunks, and squirrels. Pollution has caused problems for many species.