Finn Rock Reach is Home to Rare Turtles
Before you can even see them, the turtles know you’re there. As you walk towards the ponds, you hear soft plops and see rings in the water. Western pond and western painted turtles escape quickly into the water from their sunbathing perches. Once they realize you are not a predator, they cautiously stick their heads out of the water and slowly climb back onto the logs and rocks that dot the surface of the ponds at Finn Rock Reach.
During the warm months, these native Oregon species spend their days basking on logs, rocks, and even floating plants. As spring turns into summer, adult female turtles begin to lay their eggs in nests in the ground. They cover them with dirt, and the eggs are warmed by the summer sun. With luck, by the time the salmon return to their spawning grounds in nearby Elk Creek, a new crop of hatchlings will crawl out and slip quietly into the ponds with their parents.
Both of the turtle species found at Finn Rock Reach are rare in the Willamette Valley. Luckily, this area contains some of the most diverse habitat of the upper McKenzie River. In addition to providing a home for western pond and western painted turtles, Finn Rock is home to Chinook salmon, elk, dragonflies, and more.
Turtles need specific characteristics in their habitat, both in water and on land. Western pond turtles are usually found in ponds, lakes, reservoirs, and rivers. Western painted turtles prefer slow moving, shallow water, like streams, canals, sloughs, and ponds. Both nest on land, typically close to the water. The ponds at Finn Rock have a very stable water level, which makes it easy for turtles to find nesting sites that will stay dry during the winter.
One of our goals is to make Finn Rock Reach the best possible habitat for all species. The 278-acre property was purchased by McKenzie River Trust in 2015/16 and includes 2 miles of river frontage. The former landowner, Rosboro timber company, built the ponds so that they could gather gravel to construct roads across their network of lands in the McKenzie basin. Nobody suspected that these man-made ponds would attract such sensitive turtle species.
Learning More, Day by Day
To find out how our turtles are using the area, our stewardship interns are making regular visits to the ponds. They’re observing how the turtles are currently using the ponds by watching basking behaviors, taking count of each species, and mapping their nests. The information gathered from this research will help inform our management plan for the property.
The next step is restoration to help improve the habitat. Restoration will likely include re-grading the banks of the ponds and planting them with natural vegetation to improve nesting and rearing areas. It will also likely include making the area less conducive to invasive species, and creating better basking spots.
Balancing Needs for Turtles and Salmon
Before the ponds were created, this area was a natural floodplain. During the winter and larger flood events, the river would expand on to the floodplain, creating lots of side channels. These slow moving waters are the perfect habitat for young salmon, which aren’t yet strong enough to take on the fast flowing river. Today, though, the high, steep edges of the ponds prevent the river from making these connections and creating side channels.
The challenge we now face is how to restore floodplain habitat for juvenile salmon, while still keeping the ponds and dry nesting habitat for our native turtle species. One possibility is to turn part of the pond area back into floodplain, while keeping a section as ponds for turtle habitat. Fortunately, turtles are smart creatures, and they will be able to utilize the remaining nesting areas.
What You Can Do
It’s important to protect these habitats as our population expands and demands on the McKenzie River grow.
At McKenzie River Trust, we are working hard to do our part to help make Finn Rock an even better habitat for native species. In April, we launched the McKenzie Homewaters Campaign, a $6 million community effort to protect, restore, and care for Finn Rock Reach, and to expand our conservation footprint up and downstream. To date, over 200 people like you have contributed, bringing us to more than 2/3 of our goal.
If you’re interested in seeing the turtles and exploring Finn Rock Reach, please join us on one of our tours and let us know that you want to learn more. We would be happy to sit down or walk the land with you to introduce you to the projects at Finn Rock and elsewhere in the watershed.
Story and photos by Harper Johnson