subsequent active management area; designation

HB 2518 allows Arizona's groundwater director to designate new "subsequent active management areas" for groundwater basins that aren't already covered by existing management plans. It specifies that such designations are required if groundwater preservation is needed, land subsidence threatens property or storage, or groundwater use degrades water quality. The bill mandates that these areas must cover entire groundwater basins (except for northern Arizona's regional aquifers), not partial sections. This directly affects groundwater users and landowners in newly designated basins by subjecting them to future management practices.