Island Erosion Threatens Natural Landmark
CHATTANOOGA, Tenn. (WDEF) – Maclellan Island is facing a long-term erosion problem, according to leaders with the Chattanooga Audubon Society.
The nonprofit said the island has lost about three acres since 1997, shrinking from roughly 27 acres to 24 acres. The erosion appears to be occurring at a rate of about one acre every decade.
The island sits in the Tennessee River between Chattanooga’s riverfront and North Shore districts. The Chattanooga Audubon Society has served as steward of the island since 1954, when Robert J. Maclellan donated the property.
Leaders said erosion has been an ongoing challenge. A 1996 study examining the island’s footprint over 30 years found similar patterns of land loss.
The Audubon Society said placing large rocks, or riprap, along the shoreline is the most viable approach to slow or stop the erosion.
Riprap along the western tip, where the Audubon Society has a boat dock, could cost more than $100,000. Stabilizing the full shoreline may cost between $2 million and $5 million.
Leaders said the erosion is influenced by the Tennessee River’s water levels and boat activity. Vegetated riprap would provide connections between land and water to support wildlife habitat.
Earlier this week, the Audubon Society met with community stakeholders to discuss preservation efforts, habitat restoration, shoreline stabilization, and long-term planning for the island.
The nonprofit said its goals include stopping erosion, restoring native habitat, improving infrastructure, and developing a sustainable long-term plan for Maclellan Island.
The Chattanooga Audubon Society says it will be at the outdoor expo at the choo-choo this weekend. They’ll have a booth there and would love to talk more about Maclellan Island.
