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Lake Heritage Dam Improvements

HISTORICAL BACKGROUND

The Lake Heritage Dam was constructed prior to 1977 and is located in the Lake Heritage Estates residential neighborhood on the south side of Apalachee Parkway. The Lake Heritage Dam is an approximately 14-foot-high earthen dam. The existing primary spillway consists of a valve and riser structure in the lake and a corrugated metal pipe through the dam. A secondary spillway consists of swales and culverts between private residences on the east side of the lake. The primary spillway is currently in a “failed” condition. For some time leakage/seepage has been observed around and through the pipe, and this flow has increased over the years. The County’s goal is to address modifications to the dam and spillway systems that will allow the dam to maintain the lake safely at the current levels.

 



 

PROPOSED IMPROVEMENTS

The proposed improvements consist of maintaining the existing lake level at elevation 86.8 NAVD by constructing a new overflow weir at the dam to serve as the primary outfall structure. The existing secondary spillway system would serve as the secondary outfall. Overall, this project will restore function to the Lake Heritage outfall structures and allow storm events to pass through the dam in a safe and controlled manner, while adhering to the Leon County code requirements for flood protection elevations.
 

 

Project Overview:

 

April 28, 2015 at 2:00 PM:  Construction bid opening.

End of May 2015:  Contractor selected.

July 2015:  Construction will start and to be completed by the summer of 2016.

Fall of 2016:  Post construction permit to be completed.

 

PROJECT CONTACTS:

  George Su, P.E.
Leon County Department of Public Works 
2280 Miccosukee Road, Tallahassee, FL 32308
 
Email: SuShin@leoncountyfl.gov
 
Phone: (850)606-1500      Fax: (850)606-1501

 

FEMA Flood Map Revision Notice

The Leon County, Florida Public Works Department hereby gives notice of the intent to revise the flood hazard information in Township 1 North, Range 2 East, and Township 1 South, Range 2 East, generally located around Lake Heritage in Leon County, FL. Specifically, the flood hazard information shall be revised in the area surrounding Lake Heritage along Lake Heritage Drive, Little River Lane, Tally Ann Drive, Chateau Lane, and Masterson Lane (contained within FEMA map number 12073C0317F). As a result of the revision, the 1% annual chance floodplain (the 100-year floodplain) shall be converted from Zone A (without a Base Flood Elevation) and established as Zone AE (at Base Flood Elevation of EL 88.5 feet NAVD88) within the area of revision. Maps and detailed analysis of the revision can be reviewed at the Leon County Public Works Department at 2280 Miccosukee Road, 2nd Floor, Tallahassee, FL 32308. Interested persons may call George Su, PE, Sr. Design Engineer, at (850) 606-1544 for additional information from 8:00 AM to 5:00 PM, Monday through Friday.

To view draft Map Revision, click here