The subject area of the proposed rulemaking is amendments to the District’s water shortage plan codified in Chapter 40D-21, F.A.C. Amendments may address noticing of the declaration of a water shortage and associated water use restrictions, the hydrologic indicators to be used to assess whether to declare a water shortage or to change phases of a declared water shortage, the number and effect of water shortage phases and drought levels, the water use restrictions to be implemented during drought levels and phases of a water shortage, and other matters as appropriate to make the water shortage plan more effective.