While the magnitude of such discharge might be relatively minor, in areas dominated by river flow, recent studies had indicated that groundwater might occasionally account for a significant fraction of the freshwater inflow.
尽管这种排放可能规模较小，并且主要发生在河水流动地区，但最近的研究显示，地下水有时可能在流动的淡水中占很大的比例。