In 1989, the District declared portions of northern Hillsborough and southwestern Pasco counties and all of Pinellas County a Water Use Caution Area, known as the Northern Tampa Bay Water Use Caution Area (NTBWUCA), to address groundwater withdrawals that had resulted in lowered lake levels, destruction and deterioration of wetlands, streamflow reductions and salt water intrusion into the aquifer. The boundaries of the NTBWUCA were initially limited to this region because regulations adopted to address these impacts focused primarily on reducing water demands in the most heavily populated areas. Since then, population and water demands in the remaining northern portions of Hillsborough and Pasco counties have grown significantly. Therefore, District seeks to expand the NTBWUCA regulations to these remaining areas. Section 7.3 of the District’s Water Use Permit Information Manual Part B, “Basis of Review” and subsection 40D-2.801(3), F.A.C. are amended to revise the geographic boundary of the NTBWUCA. Rule 40D-2.091, F.A.C. is amended to incorporate by reference the effective date of the amendments to the “Basis of Review.”