Fla. Admin. Code R. 40A-21.221
(2) Current data shall be compared to historical data to determine whether the estimated present and anticipated available water supply within any source class will be insufficient to meet the estimated present and anticipated demands of the users from the source class, or whether serious harm to the water resources can be expected. Factors that shall be considered in determining whether serious harm to the water resource may occur include:
Rulemaking Authority 373.044, 373.113 FS. Law Implemented 373.175, 373.246 FS. History–New 3-29-92.