Groundwater subbasin definition
Groundwater subbasin means a subdivision of a major or minor groundwater basin overlain by contiguous land and having substantially the same geological and hydrological characteristics and yield capabilities. [82:1020.1(4)] Examples are a lateral or vertical subdivision of a groundwater basin delineated by either physical or political boundaries. Physical boundaries would be different in geological, hydrological or yield capabilities; bedrock; faults; low permeability zones or limits of pressure areas, etc. Political boundaries would be irrigation districts, planning districts, counties, city limits, etc.