depression cone, influence cone, (groundwater) drawdown cone, pumping-depression cone, (well)cone of depression, (well)cone of influence, groundwater depression cone [The depression in the water table around a well defining the area of influence of the well. “Basin” and “funnel” and “crater” may be used synonymously for “cone”] ● (Ab)Senk(ungs)trichter m, (Ab)Senk(ungs)kegel m, Entnahmetrichter, Entnahmekegel