St. Lucie Estuary/ Southern Indian River Lagoon Water Resource Summary

Transcription

1 St. Lucie Estuary/ Southern Indian River Lagoon Water Resource Summary Kathy LaMartina Regional Representative, Martin/St. Lucie Counties South Florida Water Management District

2 Water Resource Modifications Historic Flow Current Flow

3 Historical Problems Leading to Construction of C&SF Project Hurricanes in 1926 and 1928 resulted in failure of the levee around Lake Okeechobee Hurricane in 1947 resulted in wide-spread flooding throughout South Florida State of Florida requested Federal assistance in 1947 Congress authorized the C&SF Project in 1948

4 Major Central and South Florida Project Components River Channelization Herbert Hoover Dike Water Conservation Areas Protective Levees Everglades Agricultural Area Lower East Coast Drainage Network Salinity Structures

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7 Martin County 2000

8 S-48 in Martin County

9 C-25 Canal in St. Lucie County

10 S-80 in Martin County

11 Florida s Water Management Districts Core Mission Flood Protection Water Quality Water Supply Natural Systems

12 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

13 Lake Okeechobee Lake Okeechobee 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

14 Inflow capacity far exceeds outflow capacity

15 Lake Okeechobee Major Structures Managed by the USACE (red ) and the SFWMD (blue ) S-71 S-65E S-72 S-308: Port Mayaca Lock & Dam C-10A S-80: St. Lucie Lock & Dam S-79: Franklin Lock & Dam S-78: Ortona Lock & Dam S-77: Moore Haven Lock & Dam S-354 S-352 S-351

16 Typical Lake Okeechobee & Estuary Flows During Wet Periods Lake Inflows S-80 Discharge to St. Lucie Estuary C-43 Basin Runoff Lake Release C-44 at S-308 Basin Runoff S-79 Discharge to Caloosahatchee Estuary Lake Release at S-77 EAA Runoff Lake Release through EAA to WCAs (via STAs) &/or to tide

17 SFWMD Wet Season Rainfall May October 15, 2013 DISTRICT-WIDE: (117% of Avg, or ) Wet Season Started ~May 18 th 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 )

18 SFWMD Dry Season Rainfall November 2015 January 2016 DISTRICT-WIDE: (300% of Avg, or ) Dry season lasts through May averaging 18 or less Jan. record above the historical average or 476 percent of average Nov. Jan. period was wettest since record keeping began in 1932

19 2013 Hurricane Season Jun-Nov

20 2013 Discharges to the St. Lucie Estuary Does not include runoff from tidal basin or groundwater Data through Sep 30th 22

21 Constraints Limiting Discharges South STA treatment capability EAA Flood Control WCA levee integrity WCA water levels Protected species S-12 discharge capacity Water levels in NE Shark River Slough

22 Water Discharges to St. Lucie Estuary Annual Total Discharges (Thousand Acre Feet) S-80 S-97 S-49

23 Annual Average Phosphorus Concentration Total Phosphorus (Milligrams per Liter) C-44 SC-23 C-24 28

24 2000 Jan Apr Jul Oct 2001 Jan Apr Jul Oct 2002 Jan Apr Jul Oct 2003 Jan Apr Jul Oct 2004 Jan Apr Jul Oct 2005 Jan Apr Jul Oct Flow (ac/ft) T-PO4 (mg/l) C-23 Canal Flow & T-PO4 Flow Weighted Mean Flow T-PO

25 Salinity Conditions June 30, 2013 July 30, 2013 Areas Not Modeled Areas Not Modeled

26 Salinity Tolerances of Oysters Juveniles: Mortality after 7 days at < 5 Adults: Mortality after 28 days at < 5

27 Peacock Ranch in St. Lucie County

28 Peacock Ranch in St. Lucie County

29 Peacock Ranch in St. Lucie County

30 Elkcam Waterway in St. Lucie County

31 Martin Downs Country Club in Martin County

32 Port St. Lucie

33 Solutions 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

34 Salerno Creek in Martin County

35 Platts Creek in St. Lucie County

36 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% Federal 50% State $ $

37 Comprehensive Everglades Restoration Plan Restore and improve quality, quantity, timing and flow of water. Provide sustainable water supply to meet environmental, agricultural and urban needs. C-44 Stormwater Treatment Area Loxahatchee River Restoration C-111 Spreader Canal

38 CERP The Goal

39 Comprehensive Everglades Restoration Plan Includes 68 components to be implemented over 35 years. Features include: Aquifer Storage & Recovery Surface Water Storage Reservoirs Stormwater Treatments Areas Seepage Management Removing Barriers to Sheetflow Operational Changes Reuse Wastewater

40 Restoration Works Kissimmee River Before After Restored Success

41 Indian River 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)

42 Indian River Lagoon South (IRLS) Improve habitat quality in estuarine ecosystems Improve functional quality of wetland 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

43 C-44 Reservoir & STA C-44 Reservoir C-44 STA Status Corps constructing reservoir State funding expediting construction of C-44 STA 48

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

45 Dispersed Water Management 87,000 acre feet of storage achieved 99,000 acre feet of additional storage approved December 2014

46 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 Everglades National Park while protecting urban and agricultural areas to the east from flooding

47 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 fresh water, which will significantly decrease the frequency and intensity of harmful freshwater discharges to the norther estuaries. Reduce phosphorus loads to Lake Okeechobee, Caloosahatchee Estuary, St. Lucie Estuary and the Everglades by 252 metric tons per year.

48 QUESTIONS?