The Chilogatee Restoration Site is located near Maryville, Tennessee in the Great Smoky Mountains National Park. The entrenched streams suffered from significant bank stress, bank erosion, and poor habitat. Past agriculture practices had relocated the channel to the edge of the valley and the tributaries had been ditched across the floodplain.
The goal of the project was to restore ecological function to the existing streams and riparian wetlands by returning Chilogatee Branch to a proper relationship with the floodplain. The main stream and its tributaries were constructed as a type B4c streams. Chilogatee Branch has a drainage area of 2.2 square miles and was constructed with a bankfull width of 23 feet and a width/depth ratio of 17. Installation of brush, rock and wood structures were used to enhance channel stability and increase habitat diversity. Restoration efforts also involved re-composition of the stream bed using native on-site bed material. Restoration of the adjacent wetlands required removal of some floodplain sediments to intersect with groundwater sources. Additional restoration activities included removal of invasive species and replanting the riparian area with native plant species appropriate for the valley and watershed conditions.
The Chilogatee Branch site was developed as an in-lieu fee mitigation site by Tennessee Stream Mitigation Program (TSMP). Wolf Creek Engineering provided design and construction oversight for the restoration of 5,600 feet of streams and 0.44 acres of wetlands. Construction was performed by KCI Technologies Inc. and was completed in 2015.
Aerial photos 8 months after restoration