3.3 everglades restoration plans
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Transcript of 3.3 everglades restoration plans
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