ASCE – Tri-County Workshop: Everglades Restoration PlansASCE – Tri-County Workshop: Everglades Restoration PlansJeff Kivett, P.E., Division DirectorOperations, Engineering and Construction, SFWMDJeff Kivett, P.E., Division DirectorOperations, Engineering and Construction, SFWMD

May 10, 2013May 10, 2013

Agency Background

One of five water management districts created by Water Resources Act in 1972 Includes all or part of 16 counties -

from Orlando to Key West Core mission responsibilities:

Flood protection Water quality Water supply Natural systems

SFWMD

FLOOD CONTROL CHALLENGES & SOLUTIONS

Everglades NP

WCA-1

WCA-3A

WCA-3B

Lake Okeechobee

EAA

Maximizing water away from residential, urban and agricultural areas to Lake Okeechobee, StormwaterTreatment Areas, Everglades WCAs and out to tide.

Overview of Flood Control 

Operations

WCA-2A

48-Hour Isaac Estimated Rainfall Amounts8pm Saturday – 8pm Monday (Aug 25-27)

MondaySunday

LAKE OKEE

WCA-1

C-51

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Everglades Water Quality –Long-Term Solutions

Everglades Water Quality Improvements to Date

• $1.8 billion investment

• Farm Best Management Practices (BMPs)• Avg. phosphorus reduction of 55%

• 5 Stormwater Treatment Areas • 57,000 acres of effective treatment• 11,500,000 acre-feet (3.75 trillion

gallons) treated• 1,470 Metric Tons of phosphorus

removed

FEB~45,000 ac-ft

WCA-3A

WCA-1Loxahatchee

National WildlifeRefuge

WCA-2A

STA1W

Lake Okeechobee

STA-3/4STA-2

STA Earthwork

~800 ac

FEB~60,000 ac-ft

STA~6,500 ac

EasternFlowpath

CentralFlowpath

FEB~11,000 ac-ft

STA5/6

WesternFlowpath

STA1E

Everglades Water Quality –Additional Restoration Strategies - $880M

Sub-Regional Source Controls

C-139 Annex Restoration

Replacement Storage

STA 1W Initial Expansion

A-1 Flow Equalization Basin (FEB)

The A-1 FEB project is a part of the overall Everglades restoration effort and will support the operations of STA-3/4 and STA-2/Compartment B. The A-1 Flow Equalization Basin (FEB) will be an approximately 15,000 acre basin that will be utilized to attenuate peak storm water runoff flows being delivered to the STA-3/4 and STA-2/Compartment B from the North New River Canal (NNRC) and the Miami Canal.

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Western Interior Conveyance Levee is shorter

Collection and Conveyance Canal was modified

Existing Roads/Levees will be degraded to adjacent grade

Seepage pumps at G-370 will be upgraded

G-716 Three Gate Structure

During high flow events from the C-51 West Basin and when there is capacity for storage in the L-8 FEB or when STA 1E is receiving optimal flows, water will be diverted through S-375 & G-716 to the G-311 Structure, the addition of G-716 Structure is required. G-716 Structure will be designed for a capacity of approximately 2,400 cfs.

G-716

L-8 Flow Equalization Basin

L-8 Divide Structure, G-541

This Project includes the design and construction of a fully automated, reinforced concrete water control structure to be located within the L-8 Borrow Canal, east of the L-8 FEB. The structure will be designed to function within the current o[perational criteria for the L-8 Borrow Canal, while facilitating flows from the STA-1 Inflow Basin into the L-8 FEB. The structure will also be used to allow flows to be directed south from the L-8 FEB into the STA-1 Inflow Basin.

S-5AS Divide Structure

Under the Restoration Strategies Program S-5A Basin a& the C-51 West Basin runoff will be directed north through S-5AS to the L-8 FEB. With the implementation of this Program, the use of the S-5AS structure will increase and therefore will require upgrades to ensure more efficient operations and increased use at higher stages and flow rates.

Everglades Restoration –Long-Term Solutions

Central Everglades Planning Project Streamlined planning effort to

get projects in the heart of the Everglades system readied for Congressional authorization and appropriation within 2 years

SFWMD Commitment Provide technical expertise Modeling Plan formulation Facilitate public participation Serve as local sponsor

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LAKEOKEECHOBEE

St. LucieEstuary

CaloosahatcheeEstuary

Gulf ofMexico

Florida Bay

BiscayneBay

EVERGLADESAGRICULTURAL

AREA

EVERGLADESNATIONAL

PARK

WCA 3

WCA 1

WCA 2

Move water south from Lake Okeechobee through Everglades Agricultural Area (EAA)

Improve benefits to the east and west coast estuaries

Store and treat flows in facilities within the EAA

Send treated water south to improve conditions within Water Conservation Area 3A and 3B (WCA 3) and Everglades National Park and Florida Bay

CENTRAL EVERGLADESPLANNING PROJECT PROPOSES

SPATIAL PERSPECTIVE

REDLINE Flows from EAA into WCA 3A

(L-4, L-5 and L-6 levees and canals)

GREENLINE / BLUELINE Flows through WCA 3A and WCA 3B

(L-67A and L-67C levees and associated canals)

Flows from WCA 3A/3B into Everglades National Park (Tamiami Trail roadway and L-29)

YELLOWLINE Flows from WCA 3A/3B and ENP to the lower

east coast (east coast protective levee system, the L-30 and L-31N)

EAA Storage and Treatment Northern WCA 3A Hydropattern Restoration L-28 Triangle Rehydration/connectivity

WCA 3A/3B and ENP Conveyance

Seepage Management Options 18

LAKEOKEECHOBEE

St. LucieEstuary

Gulf ofMexico

Florida Bay

BiscayneBay

EVERGLADESAGRICULTURAL

AREA

EVERGLADESNATIONAL

PARK

WCA 3

WCA 1

WCA 2

CaloosahatcheeEstuary

CURRENT STATUSStudy Analysis Phase

PROJECT FEATURES ARE BEING CONSIDERED AND UNDERGOING MODELING AND EVALUATION

YOU ARE HERE

STUDY SCOPING STUDY ANALYSIS REPORT FINALIZATION

Year 1 Year 2

Federal Interest Problems &

Opportunities Future Without Project Management

Measures Analysis Plan

Agency Technical Review Independent External

Peer Review Cost Certification Public Review Plan Confirmation State & Agency Review

DECISIONPOINT 1

(completed Jan 2012)

DECISIONPOINT 2

Alternative Development Plan Evaluation &

Comparison Plan Selection Project Implementation

Report - DRAFT

DECISIONPOINT 3

DECISIONPOINT 4

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MODELING STRATEGIES

Hydrologic models (computer simulation) are planning tools to facilitate the evaluation

of alternative restoration approaches

Conveyance and distribution available for water to go where

needed, when needed

Enough clean water so system is not over-drained in WCA-3

Maintain clean water in the natural system but do not impact existing

flood management

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EAA

WCA-3AWCA-3B

LAKEOKEECHOBEE

ENP

WCA3A

WCA2

WCA1

I-75

WCA3B

SCREENING COMPLETED

North of the Redline Combination of features to increase water

deliveries downstream and improve estuarine benefits

South of the Redline Features and their locations to best restore

sheetflow in northern Water Conservation Area 3A

Greenline/Blueline Features to best restore sheetflow through

southern WCA-3A and 3B

Configuration of conveyance features to best restore flows to Everglades National Park

Yellowline Features to best compliment rest of project and

manage seepage to the eastern urban area without impacting the water supply 21

S-333

L-30

L-33

L-28

L-5

Tamiami Trail

L-67 Ext

EVERGLADESAGRICULTURAL

AREA

WATERCONSERVATION

AREAS

EVERGLADESNATIONAL

PARK

L-29

within considerations and constraints

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QUANTITY AND QUALITYStorage/Treatment

WCA3A

WCA2

WCA1

I-75

WCA3B

S-333

L-30

L-33

L-28

L-5

Tamiami Trail

L-67 Ext

EVERGLADESAGRICULTURAL

AREA

WATERCONSERVATION

AREAS

EVERGLADESNATIONAL

PARK

L-29

CONVEYANCE AND DISTRIBUTIONDistribution, Directionality, TimingControlled versus not Controlled

SEEPAGE MANAGEMENTKeeping Water in the Natural System

Stormwater Treatment Areas (STAs) Flowage Equalization Basins (FEB) Deep Storage (various depths)

Spreader Canals Pumps Canal Filling Levee Removal and Gaps Culverts / Gated Structures

INFRASTRUCTURE CONSIDERED

Walls Pumps Step down levees

QuestionsQuestions