Potential Impacts of Increases in Domestic Self-Supply Water Use in East-Central Florida, for the Period 2013-2030

摘要

St. Johns River Water Management District's (SJRWMD's) consumptive use permitting rules provide that increases in groundwater withdrawals in Central Florida Coordination Area (CFCA) will generally not be authorized for amounts greater than an applicant's demonstrated demand through the end of 2013 (Section 40C-2.12.10, F.A.C.). Projected withdrawals of water through the end of 2013 in the Lake County portion of CFCA are expected to generally result in acceptable impacts to native vegetation, lakes, and springs. SJRWMD recognizes that groundwater withdrawals to support domestic self-supply (DSS) water use will continue to increase in the unincorporated areas of Lake County as well as in other areas of CFCA beyond 2013. Typically, such increased withdrawals from the Floridan aquifer would not be expected to result in significant cumulative impacts because the withdrawals would be spaced at reasonable distances and would involve only relatively small quantities of water. However, the magnitude and concentration of withdrawals associated with projected 2030 DSS water use could have significant impacts on Floridan aquifer water levels. SJRWMD is sensitive to the concerns expressed by the Lake Alliance and has assessed the potential impacts to the water resources from the projected increase in DSS water use in Lake County and other areas in CFCA from the end of 2013 through the end of 2030, hereinafter referred to as 2013- 2030. This document reports the results of this assessment.