DATE: August 11, 2016
TO: Board of Mayor and Aldermen
FROM: Eric Stuckey, City Administrator
Paul Holzen, Director of Engineering
SUBJECT: Consideration of an Agreement, COF 2016-0246, between the Department of the Army and The City of Franklin for the Harpeth River, Franklin, TN Section 205
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Purpose
The purpose of this memorandum is to provide the Board of Mayor and Aldermen (BOMA) with information to consider an agreement between the Department of the Army and the City of Franklin, TN for the Harpeth River, Tennessee Feasibility Study
Background
The Harpeth River and its tributaries drain the 870 square mile Harpeth River Watershed with over 1,000 miles of streams. The watershed contains large portions of Williamson, Davidson, Cheatham, and Dickson Counties, and small portions of Rutherford and Hickman Counties, Tennessee. The Harpeth River and its tributaries are subject to frequent flooding and major flooding every few decades, with the most recent major flood occurring in May 2010. The May 2010 flood event saw devastation throughout the watershed, causing 4 fatalities and over $480 million in direct economic impacts in the Harpeth River Watershed alone. The Watershed also provides habitat to 6 federally listed endangered species in addition to one endemic snail species.
Preliminary reconnaissance, documented in the Harpeth River, Tennessee Section 905(b) reconnaissance report, dated May 2012, finds over 850 structures in the regulated floodplain within the basin, including several structures recognized by FEMA to be repetitive loss structures. These structures are primarily located in the City of Brentwood, the City of Franklin, Williamson County, and Davidson County. There are additional aquatic ecosystem issues found throughout the basin, primarily involving stream bank erosion and a loss of riparian buffer and/or wetlands. An Investigations Feasibility study was initiated in 2013 with four Non-Federal sponsors, and preliminary analys...
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