Mill Creek
US ARMY CORPS OF ENGINEERS BUILDING STRONG®
FACT SHEET
(As of August 2012)
AUTHORIZATION: House Committee on Transportation and Infrastructure adopted Sept. 14, 1995.
TYPE OF PROJECT: General Investigations Flood Risk Management and Ecosystem Restoration Feasibility Study.
LOCATION: Mill Creek drains southeastern Davidson County and northeastern Williamson County. It originates two miles south of Nolensville and flows northward to its confluence with the Cumberland River in Nashville. The watershed is 108 square miles with 72 in Davidson County and 36 in Williamson County.
CONGRESSIONAL INTEREST: Alexander (TN), Corker (TN), Cooper (TN-05)
NON-FEDERAL SPONSOR: Nashville; Metro Water Services
BACKGROUND:
· The FCSA for the GI study was signed in 2003; this feasibility phase is still underway.
· Originally, the study was scoped for both flood damage reduction and ecosystem restoration components, with FIS updates included under the umbrella of flood damage reduction. Currently, a letter agreement and accompanying scope include updating hydraulic models and the FIS, as well as a preliminary look at flood damage reduction alternatives once the updated hydraulics and profiles are complete. A path forward will be determined by the results of this alternative analysis. The ecosystem restoration portion of the project currently remains near completion, yet unfunded by the sponsor due to the sponsor’s current prioritization of flood damage reduction issues since the May 2010 flood event.
IMPORTANCE: Mill Creek was severely flooded during the record May 2010 flood events. Interstate 24 was flooded and shut down when Mill Creek overtopped in this event, and hundreds of homes and businesses were left damaged in the wake of the flood in addition to two flood related fatalities. The multicultural makeup of the residents of the Mill Creek floodplain make evacuation and warning one of the most challenging in the city. Mill Creek also has over 16 of its 20 miles listed as impaired by the state, and is home to the federally endangered Nashville Crayfish
STATUS: Work on a $256 thousand letter agreement began in August 2011 to update H&H and reanalyze FRM alternatives. This work is ongoing and is expected to be complete by October 2012
BUDGET ($): Estimated project costs are shown below.
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Total Estimated Cost
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$3,300,000
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Federal Cost Estimate
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1,650,000
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Non-Federal Cost Estimate
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1,650,000
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Federal Funds Data
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Allocation thru FY 2011
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1,470,000
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Allocation for FY 2012
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50,000
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Balance to Complete
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130,000
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President’s Budget for FY 2013
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0
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SCHEDULE:
FY 2011 Completed Work: Signed post May 2010 agreement to re-visit hydraulic analysis and flood risk management analysis with the new flood of record. Completed reanalysis of flood risk management alternatives.
FY 2013 Scheduled Work: Complete modeling for flood insurance study update.
Completion: Upon re-scoping the feasibility study after the current re-analysis that incorporates the new flood of record, the study is estimated to be completed in 2014.
For more information regarding the Mill Creek Watershed Study, contact Porter Williams, CELRN-PM-P, phone: (615) 736-7635, email: porter.williams@usace.army.mil.