Turtles in the watershed

By Monica Backs

Painted turtle

The Olentangy River watershed is home to a fascinating diversity of native turtles that play an important role in supporting healthy aquatic ecosystems. From sunbathing on logs to gliding along the streambed, these reptiles are a familiar sight to those who spend time along central Ohio’s waterways.

Among the most recognizable species are painted turtles and snapping turtles, which inhabit slower-moving sections of the river, wetlands, and ponds. Painted turtles are often seen basking in groups, soaking up heat to regulate their body temperature, while snapping turtles tend to remain more elusive, relying on camouflage and stillness. In contrast, map turtles are true river specialists and are more commonly seen in flowing water systems like the Olentangy and nearby tributaries.

Map turtle by Mike Graziano

Map turtles are particularly adapted for life in streams. Their flattened shells and pronounced central ridge, known as a keel, give them a streamlined profile, allowing them to move efficiently through currents. They are also much more cautious than other turtles, often slipping quickly into the water at the first sign of disturbance. Unlike more herbivorous species, map turtles are active predators, feeding on snails, mussels, insects, and crayfish along the river bottom.

Another notable inhabitant of the watershed is the spiny softshell turtle, a uniquely adapted species that looks dramatically different from its hard-shelled relatives. Softshell turtles have flat, leathery shells, long necks, and snorkel-like noses, allowing them to breathe while mostly submerged. They are agile swimmers and often bury themselves in sandy substrates, lying in wait for prey or avoiding detection. Their presence is closely tied to clean, well-oxygenated streams with sandy or soft bottoms, making them an important indicator of good water quality.

Spiny softshell turtle by Mike Graziano

Despite their resilience, turtles in the Olentangy watershed face ongoing challenges. Habitat loss, water pollution, and reduced populations of native mussels—an important food source for species like map turtles—can limit their survival. Additionally, riverbank disturbance and human activity can affect nesting success, as female turtles must leave the water to lay eggs in suitable soils.

Protecting and restoring river health directly benefits these turtles and the broader ecosystem they support. By preserving riparian corridors, improving water quality, and maintaining natural stream processes, we can help turtles continue to thrive in the Lower Olentangy Watershed for generations to come!