Water Supply Orange County Presented by Kirby B. Green Executive Director St. Johns River Water Management District January 27, 2009

Water Supply Planning 1997 legislation Water Supply Assessments o Existing and projected water use o Existing and proposed sources of water and conservation efforts o Identifies areas where projected uses cannot be sustained with proposed sources without unacceptable impacts to water resources and related natural systems – priority water resource caution areas o 1998, 2003, draft 2008 Water supply Plans o Identifies water supply development projects adequate to meet projected water supply needs, water resource development projects and sources of project funding o 2000, 2005, upcoming process for 2010

Water Supply Planning in East-Central Florida East-Central Florida Water Supply Planning Initiative St. Johns River/Taylor Creek Reservoir Project Countywide water supply plans Project scoping meetings Coquina Coast Seawater Project study Water Protection and Sustainability Program

Central Florida Coordination Area

Minimum Flows and Levels Minimum flows and levels (MFLs) have been set for the St. Johns River at several locations. MFLs on the St. Johns River have been peer-reviewed. Additional MFLs are under development. MFLs provide an upper limit on the cumulative quantities of water potentially available ― estimated at 155 mgd from the St. Johns River ― in order to assure no adverse impacts. Salinity modeling was done, but more scenarios should be investigated. The District has received peer review for groundwater models, surface water hydrologic models and reports documenting these models, economic analysis, water use data, and concentrate management evaluations.

Net Permitted Withdrawals from the St. Johns River Brevard County ─ 21 mgd Seminole County ─ 6.2 mgd Volusia County ─ 2 mgd Putnam County ─ 11 mgd Duval County ─ 42.3 mgd mgd = million gallons per day Net withdrawal = total withdrawal minus return to river Includes only withdrawals with quantities of 100,000 gallons per day or greater from the St. Johns River between the Atlantic Ocean and U.S Does not include permitted withdrawals for fire protection.

Concerns SJRWMD Has Heard from Local Governments Increase in profile average salinity Salinity Marine life Vegetation

Cumulative Impacts Study

Alachua, Baker, Clay, Duval, Flagler, Nassau, Putnam, St. Johns Brevard, Indian River, Lake, Marion, Orange, Seminole, Volusia North SJRWMD (137 mgd)South SJRWMD (184 mgd) Treated Wastewater Flow, 2006 Other Disposal 18% Beneficial Reuse 55% Surface Water Discharge 27% Other disposal includes percolation ponds, rapid infiltration basins and absorption fields in discharge areas, spray fields and deep well injection. Revised May 21, 2008

Water Conservation Permitting and enforcement Watering restrictions Local government ordinances/planning activities Florida Water Star SM Education

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