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Herbert Hoover Dike FL (C)

March 2018


FACT SHEET

Herbert Hoover Dike FL

Construction (C)

Congressional Districts: 17, 18, 20, 21, 25, 26

1. DESCRIPTION

AUTHORIZATION:  The Herbert Hoover Dike (HHD) is a component of the Central and Southern Florida (C&SF) Project for Flood Control and other Purposes. The C&SF project was authorized in the Flood Control Act of 1948, 1954, 1960, 1965, and 1968; authorization in 1970 under Section 201 of the Flood Control Act of 1965; the Water Resources Development Acts (WRDA) of 1986, 1988, 1990, 1992, 1996 and 2007; and the Rivers and Harbors Act of 1930.

BACKGROUND:  The HHD system consists of approximately 143 miles of levee surrounding Lake Okeechobee, with 32 culverts, hurricane gates and other water control structures. The first embankments around Lake Okeechobee were constructed by local interests from sand and muck, circa 1915. Hurricane tides overtopped the original embankments in 1926 and 1928 causing over 3,000 deaths. The River and Harbor Act of 1930 authorized the construction of 67.8 miles of levee along the south shore of Lake Okeechobee and 15.7 miles of levee along the north shore. The U. S. Army Corps of Engineers (Corps) constructed the levees between 1932 and 1938 with crest heights ranging from +32 to +35 feet, National Geodetic Vertical Datum (NGVD).  A major hurricane in 1947 prompted the need for additional flood protection work. As a result, Congress passed the Flood Control Act of 1948 authorizing the first phase of the C&SF project, a comprehensive plan to provide flood protection and other water control benefits in central and south Florida. By the late 1960s, the new dike system was completed, raising the elevation of the levees to a maximum +41 feet, NGVD. This provides protection to the Standard Project Flood (SPF) level, approximately an event occurring once in 935 years. However, investigations conducted in the 1980s and early 1990s of the dike system's potential seepage and stability problems resulted in the identification of two major areas of concern: the seepage and embankment stability at the culvert locations, and the problematic foundation conditions of the dike.  During high water events, piping is experienced thru the levee. In 1999, the Corps developed a plan to rehabilitate the HHD. The plan was approved in 2000 and divided the 143 mile embankment into eight reaches with the initial focus on Reach 1. In August 2016, a Dam Safety Modification Report (DSMR) was completed and approved by the Corps Dam Safety Officer. The approved plan in the DSMR includes all remaining fixes to bring HHD within tolerable risk guideline
.

2. FUNDING

Estimated Total Cost $1,799,500,000
Estimated Federal Cost $1,799,500,000
Allocation thru FY17 $940,894,000
Allocation for FY17 $82,000,000
President’s Budget FY19 $96,000,000

3. SPONSOR

South Florida Water Management District
3301 Gun Club Road
West Palm Beach, Florida 33416-4680

4. STATUS

FY2018 funds will be used to award one additional contract for the replacement of one water control structure and one contract to begin the cutoff wall extension between Belle Glade and Lake Harbor. FY2018 efforts include continued construction on eighteen water control structures at various locations on Herbert Hoover Dike around Lake Okeechobee and the cutoff wall gap closures project. Detailed design activities ongoing include water control structure replacement and design of features identified in the DSMR (including additional cutoff wall between the cities of Clewiston and Moore Haven, FL. FY2019 funds will be used to award the final water control structure replacement, additional cutoff wall contracts, and culvert abandonment contract; and continue construction on previously awarded water control structures and Reach 1 cutoff wall extension construction contracts.

The Section 1024 Contributed Funds Memorandum of Agreement (MOA) was executed April 6, 2018 to transfer $50 million of state funding that will be applied to the Reach 1 Cutoff Wall Extension construction contract.


                                                                         Herbert Hoover Dike Rehabilitation project map