F A C T S & I N F O R M A T I O N

C-111 | Spreader Canal Western Project

JANUARY 2017

PROJECT PURPOSEThe C-111 Spreader Canal Western Project is an enhancement to the 1994 C-111 General Reevaluation Report. Its goal is to improve ENP conditions by establishing more natural water flows in Taylor Slough. This, in turn, will improve the timing, distribution and quantity of water in Florida Bay. Both the slough and bay are within ENP. The western project also begins features that will jumpstart environmental restoration in the Southern Glades and Model Lands. These areas form a contiguous habitat corridor with Everglades National Park, Biscayne National Park, Crocodile Lakes National Wildlife Refuge, the north Key Largo Conservation and Recreational Lands (CARL) purchases, John Pennekamp State Park and the National Marine Sanctuary. It is estimated that about 252,000 acres of wetlands and coastal habitat may be affected by the proposed project.

PROJECT DESCRIPTIONThe C-111 Spreader Canal Western Project will create a six-mile hydraulic ridge adjacent to ENP that will keep more of the natural rainfall and water flows within Taylor Slough. The hydraulic ridge will be created by constructing a 590-acre above-ground detention area in the Frog Pond area, installing two 225 cubic feet per second pump stations, and integrating other project features. The project will also begin restoration of the Southern Glades and Model Lands with an operable structure in the lower C-111 canal, incremental operational changes at the S-18C structure, a plug at S-20A, operational changes at the S-20 structure, and construction of earthen plugs at the C-110 canal.

The C-111 canal in south Miami-Dade County is the southernmost canal of the Central and South Florida (C&SF) Flood Control Project. The canal was constructed under the authority of the Flood Control Act of 1962 to extend flood protection while improving conservation and distribution of available water. The canal provides several critical functions, including flood damage reduction for the roughly 100-square-mile C-111 basin.

PROJECT BACKGROUNDCongress recognized that Everglades National Park (ENP) is a nationally and internationally significant resource, and has and continues to be adversely affected by external factors that have altered the ecosystem including the natural hydrologic conditions within the park. Congress enacted the Everglades National Park Protection and Expansion Act in 1989. The Act directed the Secretary of the Army to take all measures feasible and consistent with the purposes of the C&SF Project to protect natural values associated with ENP. As a result, the U.S. Army Corps of Engineers completed the C-111 General Reevaluation Report (GRR) in 1994.

The GRR recommended construction of bridge crossings, pump stations, levees and canals to restore the ecosystem in Taylor Slough and the eastern panhandle of ENP. Included in the recommended plan were pump station 332E, a spreader canal, and plugs in the C-110. These elements of the GRR recommended plan were later made part of the Comprehensive Everglades Restoration Plan (CERP). The C-111 Spreader Canal project is being evaluated via two Project Implementation Reports (PIR). The western PIR focuses on the restoration of flows to Florida Bay via Taylor Slough as well as the restoration of the Southern Glades and Model Lands. The eastern PIR will address restoration of the remainder of the project area through features such as a spreader canal and backfilling of the C-111 canal.

MICHAEL DROGUSACE Project ManagerP.O. Box 4970Jacksonville, FL 32232-0019 michael.j.drog@usace.army.mil 904-232-1784

BRENDA MILLSSFWMD Project Manager 3301 Gun Club Road West Palm Beach, FL 33406 bmills@sfwmd.gov 561-682-6536

U.S. ARMY CORPS OF ENGINEERS

C-111 | Spreader Canal Western Project

FOR MORE INFORMATION

PROJECT STATUSOn June 10, 2014, the project received congressional authorization in the Water Resources Reform and Development Act (WRRDA) of 2014. Congressional authorization now makes the project eligible for funding during the appropriations process.

In February 2012, SFWMD completed construction of the C-111 Spreader Canal Western Project as part of its state-expedited program. The C-111 Spreader Canal Western Project includes the Frog Pond Detention Area, Aerojet Canal features, plugs in the C-110, a plug at S-20A, and operational changes at S-18C and S-20. A new structure in the lower C-111 Canal is scheduled for construction in the future.

FPLCoolingCanals

FLORIDA TURNPIKE

GULF OFMEXICO

SFWMD

Area ofInterest

ATLANTICOCEAN

LEGENDRecommended Plan Features

Proposed Pump Station

Weir

Stage Trigger Changes

S-198 Operable Structure

L-31E Plug

C-110 Plugs

Proposed Conveyance Features

Proposed Current Flow

Frog Pond Detention Areas

(*Not to Scale)Everglades National Park

SD

IXIE

HY

OLDCARD

SOUND

RD

ING

RAHA

MHY

SW 328TH ST

SW

137T

SW 320TH ST

SW 360TH ST

SW 344TH ST

SW

192N

DAV

SW 304TH ST

SW 312TH ST

LUCY ST

SW 392ND ST

SE 24TH ST

NFL

AGLER

AV

E PALM DRW PALM DR

NW

6TH

AV

NW 8TH ST

PALMDR

SW

117T

HAV

SW

202N

DAV

W MOWRY DR

NW 15TH ST

SW 376TH ST

SW 7TH ST

SE

12TH

AV

SE

6TH

AV

SE

1ST

AV

SW 352ND ST

SE 8TH ST SW152N

DAV

NW

MOWRY DR

NE

12TH

SW 336TH ST

N CANAL DR

SW

14TH

AV

NE

18TH

AV

SW 312TH ST

SW 320TH ST

SW

192N

D

INGRAHAM

HY

SW

SW 328TH ST

SW

137T

HAV

NK

RO

M SW 30

SW 344TH STS

W19

7TH

AV

SDIX

IEHY

SW

152N

DAV

SW

187T

HAV

SW

162N

DAV

Aero

jet C

anal

Card Sound

Barnes Sound

FloridaCity

Homestead

Miami-Dade County

Card Sound

Barnes Sound

FloridaCity

Homestead

1

Frog PondDetention Areas*

(FPDA)

S-20TriggersRaised

S-18C IncrementalTrigger Increases

S-199Pump Station

S-200Pump Station

S-198 OperableStructure

L-31E Plug

FLORIDA CITY CANAL

NORTH CANALC

-111

L-31

E

L-31

C-1

10

C-1

11E

C-113

C-1

10P

lugs

EvergladesNational Park Miami-Dade County

ATLANTICOCEAN

N