By Sara Alvarado, The Nature Conservancy
What if one of the most biodiverse rivers in North America ran through your backyard—and its future depended on you?
As dawn breaks over the misty Paint Rock Valley, the river welcomes the new day. Cool and calm, it meanders through limestone bluffs, hardwood forests, and quiet pastures. Riparian plants, dusted with dew, greet the early risers – joggers and farmers, insects and amphibians. Beneath the surface, darters and mussels stir, part of one of the most biodiverse freshwater systems in North America, home to species found nowhere else on Earth.

The Paint Rock River is more than a scenic feature of northeast Alabama. It defines part of the boundary between Madison and Marshall counties and passes by two of TNC’s preserves: the Roy B. Whitaker Preserve and the Sharp Bingham Preserve.
“The Paint Rock River is home to over 100 species of fish, 50 freshwater mussels, and supports dozens of other threatened and endangered species,” says Alana Reynolds, TNC’s Watershed Coordinator.
As a lifeline, the river nourishes farms, sustains wildlife, and supports communities. But its health is not guaranteed. That’s where TNC and local partners come in. By midmorning, swallows skim the gentle water for insects. On its banks, restoration efforts are quietly at work.

By early afternoon, the sunlight warms the glistening river. While the light nourishes vegetation along its banks, the story within its waters is more complex. Aquatic species live in a delicate balance with temperature. Heat stress can disrupt larvae development, slow growth, and weaken resilience to disease. Even algae and aquatic plants struggle when water warms.

Over the last three decades, TNC has partnered with landowners to install riparian buffers (strips of native vegetation that filter runoff and stabilize soil), stabilize streambanks and restore floodplains to their natural function, and plant vegetation to promote ecosystem survival.
“Urban sprawl, pollution, and sedimentation are already putting pressure on these species,” Reynolds explains. “It’s important we work with private landowners and partners to preserve as much of this pristine landscape as we can.”
