Indian River Lagoon Council

Transcription

1 Indian River Lagoon Council August 2016 Indian River Lagoon Stormwater Capture and Treatment Project Development and Feasibility Study SJRWMD RF #28450

2 Project Overview Identify and Evaluate Stormwater Capture and Treatment Projects Reduce Stormwater Discharges Reduce Nutrient and Sediment Loads Flow restoration to historical basins where feasible

3 Team Overview

4 Discovery Meetings SJRWMD SFWMD Volusia County Brevard County Indian River County St Lucie County Martin County Indian River County Lagoon Coalition City of Port St Lucie

5 Identified Stormwater Projects

6 Identified Stormwater Projects

7 Identified Stormwater Projects

8 Literature Search and Evaluation Review of Existing Literature Review of Available IRL Hydrodynamic Models Annotated Bibliography Electronic copy of all collected data

9 Receiving Water Analysis Existing water quality data for segments Existing loads (freshwater, TN, TP, TSS) Relationship: loads & chlorophyll Assess benefits of each project

10 Receiving Water Analysis 1B 1C 1A 2 3 4

11 Receiving Water Analysis 1B 1C 1A 2 3 4

12 Contributing Watershed Review Review of existing water quality data Review of existing flow data Review existing models Limitations on model use

13 Projects Identified for Analysis Not typically funded by local governments Involve multiple agencies Beyond the scale of cooperative funding Require State appropriations

14 Projects for Analysis Tier I Tier II Tier III

15 Projects for Analysis Project Number Project Name Location Tier 1 Savannas Martin & St Lucie County III 2 Port St Lucie Project C-23 and C-24 II 3 CERP Project - IRL South I 4 Sebastian River Improvement District- Stormwater Capture/ Storage Facility Southern portion of the SRID II 5 Indian River Farms Water Control District- Western IRFWCD Canals Retrofit and Stormwater Capture/ Storage Facility (or Facilities) IRFWCD west of 58th Ave (Kings Highway) or north of Main Relief Canal and 43rd Ave II 6 Multiple WCD Stormwater Diversion to a Local/ Regional Stormwater Capture/ Storage Facility Region west of Sebastian River Improvement District. I 7 Fellsmere Water Control District- Main Canal Weirs and Stormwater Capture/ Storage Facility Fellsmere Canal II

16 Projects for Analysis Project Number Project Name Location Tier 8 C-54 North Treatment Option C-54 Canal II 9 Sotille Canal Rediversion Sotille Canal III 10 Nutrient removal of baseflow from C-1 Canal/Turkey Creek C-1 Canal / Turkey Creek III 11 Crane Creek Rediversion Crane Creek III 12 Nova Canal Integrated Water Resource Plan Halifax River / Nova Canal II

17 Projects for Analysis Savannas Project ~5,200 acres St. Lucie County, Martin County, FDEP, Ft. Pierce, Port St Lucie, SFWMD Provide flow and load reductions to IRL

18 Projects for Analysis Port St Lucie Project 5,044 acres Reduce flows to St. Lucie River by 27,240 ac-ft/year Water supply benefits Note: These are based on previous evaluations of the proposed system.

19 Projects for Analysis CERP IRL South Evaluate possible benefits to IRL

20 Projects for Analysis Multiple WCD Central Treatment and Storage Capture flows from WCDs draining to the IRL Up to ~90 sq miles ~450 cfs Note: These are early conceptual analysis scale estimates. Area is potential drainage area; flow is extrapolated from USGS gauge average daily flow data.

21 Projects for Analysis IRFWCD Treatment and Storage Capture flows from IRFWCD Canals Up to ~50 sq miles ~150 cfs Note: These are early conceptual analysis estimates. Area is potential drainage area; flow is from USGS gauge average daily flow data.

22 Projects for Analysis SRID North Treatment and Storage Capture flows from SRID Canals Up to ~12 sq miles ~90 cfs Note: These are early conceptual analysis estimates. Area is potential drainage area; flow is from USGS gauge average daily flow data.

23 Projects for Analysis C54 North Treatment Option ~2,600 acre parcel Provide additional treatment for C-54 baseflow Provide additional diversions from C-54 Expand to include Fellsmere Canal

24 Projects for Analysis Sottile Rediversion Note: These are early conceptual analysis scale estimates. Area is potential drainage area; flow is extrapolated from USGS gauge average daily flow data Redivert baseflow from ~ 8,000 acres Reduce: TN~20,000 lb TP~4,000 lb Restore flow to historic basin

25 Projects for Analysis C1 Canal Baseflow Treatment Baseflow Nutrient Removal Treat C1 baseflow ~ 20 cfs Reduce load to IRL: ~ 35,000 lb TN ~ 2,000 lb TP Note: These are early conceptual analysis scale estimates. Area is potential drainage area; flow is extrapolated from USGS gauge average daily flow data

26 Projects for Analysis M1 Canal Rediversion Redivert low flows from M1 Canal 5,300 acres ~ 13 cfs Reduce: ~ 23,000 lb TN ~ 2,700 lb TP Note: These are early conceptual analysis scale estimates. Area is potential drainage area; flow is extrapolated from USGS gauge average daily flow data

27 Projects for Analysis Nova Canal IWRMP Eastern Volusia County Regional Water Authority Divert low flows for water supply 15,800 acres ~ 14 cfs reduction in flows to Halifax River Note: These are early conceptual analysis scale estimates. Area is potential drainage area; flow is extrapolated from USGS gauge average daily flow data

28 Upcoming Tasks Preliminary Feasibility Study September 30 th Final Feasibility Study November 30 th