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St. Lucie / Southern Indian Lagoon Water Resource Summary

Kathy LaMartina Regional Representative, Martin/St. Lucie Counties South Water Management District Water Resource Modifications

Historic Current Flow Flow Historical Problems Leading to Construction of C&SF Project

 Hurricanes in 1926 and 1928 resulted in failure of the around Okeechobee

 Hurricane in 1947 resulted in wide-spread flooding throughout

 State of Florida requested Federal assistance in 1947

 Congress authorized the C&SF Project in 1948 Major Central and South Florida Project Components

River Channelization  Dike Water Conservation Areas Protective . Agricultural Area . Lower East Coast . Drainage Network . Structures

Martin County 2000 S-48 in Martin County C-25 Canal in St. Lucie County S-80 in Martin County Florida’s Water Management Districts

 Core Mission . Protection . Water Quality . Water Supply . Natural Systems South Florida

 18,000 square miles  2,100 miles of canals  2,100 miles of levees  More than 600 water control structures and 625 project culverts  70 pump stations  8.1 million residents  More than 3 million acres of agriculture  Vast protected natural areas

5,000 square mile watershed drains into the 730 square mile Lake Water levels driven largely by climatic conditions Serves multiple purposes: . Water Supply Storage . Flood Protection . Unique Ecosystem . Recreation

Lake Okeechobee Inflow capacity far exceeds outflow capacity Lake Okeechobee Major Structures

Managed by the USACE (red ) and the SFWMD (blue )

S-65E S-72 S-308: S-71 Port Mayaca Lock & Dam S-80: St. Lucie C-10A Lock & Dam

S-79: S-352 Franklin S-77: S-351 Lock & Dam Moore Haven S-78: Lock & Dam Ortona S-354 Lock & Dam Typical Lake S-80 Discharge to Okeechobee & St. Lucie Estuary Estuary Flows During Wet Periods Lake Inflows

C-43 Basin Runoff Lake Release C-44 at S-308 Basin Runoff Lake Release at S-77 Lake S-79 Discharge to Release Caloosahatchee EAA through Estuary Runoff EAA to WCAs (via STAs) &/or to tide SFWMD Wet Season Rainfall May 18 2013 – October 15, 2013

DISTRICT-WIDE: 39.05” (117% of Avg, or +5.58”)

 Wet Season Started ~May 18th  All basins more than 100 percent of average  April-July was very wet  April-August period was second wettest in 81-yr record (1947 was wettest by 0.37”)

SFWMD Dry Season Rainfall November 2015– January 2016

DISTRICT-WIDE: 16.22” (300% of Avg, or +10.81”)

 Dry season lasts through May averaging 18” or less  Jan. record 9.18” - 7.25” above the historical average or 476 percent of average  Nov. – Jan. period was wettest since record keeping began in 1932

2013

Hurricane Season Jun-Nov 2013 Discharges to the St. Lucie Estuary

Does not include runoff from tidal basin or Data through Sep 30th 22 Constraints Limiting Discharges South STA treatment capability

WCA levee integrity EAA Flood Control WCA water levels

Protected species

Water levels in S-12 discharge NE capacity Water Discharges to St. Lucie Estuary 1979-2015

Annual Total Discharges (Thousand Acre Feet) 1400000

1200000

1000000

800000

600000

400000

200000

0 1979 1981 1983 1985 1987 1989 1991 1993 1995 1997 1999 2001 2003 2005 2007 2009 2011 2013 2015 S-80 S-97 S-49 Annual Average Concentration

Total Phosphorus (Milligrams per Liter) 0.450

0.400

0.350

0.300

0.250

0.200

0.150

0.100

0.050

0.000

1987

2011

1979 1997

2013

1981

1983

1991

1993

2015

2007

1985

1995

2012

2001 2010

2014

2003

1982

1980

1988

1984

1992

1990

1986 1989 1998

1994

2005

1999 1996

2002

2000 2008

2004

2006 2009 C-44 SC-23 C-24

28 C-23 Canal 2000 - 2005 Flow & T-PO4 Flow Weighted Mean

100000 0.800

90000 0.700 80000 0.600 70000 0.500 60000 Flow

50000 0.400 T-PO4 Flow (ac/ft)

40000 (mg/l)T-PO4 0.300 30000 0.200 20000 0.100 10000

0 0.000

Jul Jul Jul Jul Jul Jul

Oct Oct Oct Oct Oct Oct

Apr Apr Apr Apr Apr Apr

2000 Jan 2000 Jan 2001 Jan 2002 Jan 2003 Jan 2004 Jan 2005 Salinity Conditions

June 30, 2013 July 30, 2013

Areas Areas Not Not Modeled Modeled Salinity Tolerances of Oysters

 Juveniles: Mortality after 7 days at < 5

 Adults: Mortality after 28 days at < 5 Peacock Ranch in St. Lucie County Peacock Ranch in St. Lucie County Peacock Ranch in St. Lucie County Elkcam Waterway in St. Lucie County Martin Downs Country Club in Martin County Port St. Lucie

Total Maximum Daily Load – Establishes Water Quality Standards for Impaired Water Bodies . Addresses agricultural and urban runoff

Basin Management Action Plan (BMAP)

Regional and Local Restoration Efforts

Alternative Storage

Outreach Efforts . Zero-phosphorus fertilizers; urban best management practices Salerno Creek in Martin County Platts Creek in St. Lucie County Comprehensive Everglades Restoration Plan  July 1, 1999, Secretary of the Army and State of Florida Presented plan to Congress.

 Approved by Congress as the Framework for Everglades Restoration in the Water Resources Development Act of 2000 (WRDA 2000) Project Cost Sharing 50% 50% Federal State $ $ Comprehensive Everglades Restoration Plan

Loxahatchee River  Restore and Restoration improve quality, quantity, timing and flow of water.

 Provide C-111 Spreader sustainable water C-44 Stormwater Canal supply to meet Treatment Area environmental, agricultural and urban needs. CERP – The Goal Comprehensive Everglades Restoration Plan  Includes 68 components to be implemented over 35 years.

 Features include: . Storage & Recovery . Surface Water Storage Reservoirs . Stormwater Treatments Areas . Seepage Management . Removing Barriers to Sheetflow . Operational Changes . Reuse Wastewater Restoration Works –

Before

After

Success Restored Lagoon South Authorized Components: . C-44 Reservoir & STA • 3,400 acre reservoir – 50,600 acre feet • 6,300 acre STA (6 cells) . C-23/24 Reservoirs & STA • N/S Reservoirs - ~100,000 acre feet • 2,500 acre STA – 4 cells . C-25 Reservoir/STA • 741 acre Reservoir – 5,900 acre feet • 163 acre STA . ~ 90,000 acres Natural Water Storage & Treatment Area (NWSTA) South (IRLS)

 Improve habitat quality in estuarine ecosystems  Improve functional quality of ecosystems  Improve water quality  Maintain existing level of flood control  Maintain or improve water supply for urban and agricultural use.  Maintain healthy ecosystem that supports recreational and commercial interests C-44 Reservoir & STA

C-44 Reservoir Status C-44 STA . Corps constructing reservoir . State funding expediting construction of C-44 STA

48 Natural Lands Component

Natural Lands Status . Wetland restoration under way • Allapattah Flats • Turnpike Dairy • Williamson Ranch . ~13,000 acres under landowner Allapattah Flats agreements with NRCS – WRP . Key restoration activities • Ditch blocks • Water control structures • Low-level berms

Dispersed Water Management

87,000 acre feet of storage achieved 99,000 acre feet of additional storage approved December 2014 Central Everglades Planning Project

Increase storage, treatment and conveyance of water south of Lake Okeechobee . Sends 200,000 ac-feet of water south from the Lake Removes and/or plugs canals and levees within the central Everglades Improves hydroperiod and flow through while protecting urban and agricultural areas to the east from flooding 20-Year Commitment to Everglades Restoration

Dedicated source of funding $5 billion in state funding over he next 20 years $4 billion in matching federal funds anticipated Implementation of the Governor’s plan will deliver critical benefits to the Everglades ecosystem: . Capture and store 1 million acre-feet (330 billion gallons) of , which will significantly decrease the frequency and intensity of harmful freshwater discharges to the norther . . Reduce phosphorus loads to Lake Okeechobee, Caloosahatchee Estuary, St. Lucie Estuary and the Everglades by 252 metric tons per year. QUESTIONS?