“…Previous studies of water quality related to the GDU have focused on the potential water-quality impact on the James River (Briel, 1988;Sando and others, 1990) and the Sheyenne/Red River system (Guenthner, 1991(Guenthner, , 1993 if streamflows were augmented by water from the GDU. Studies also have examined the effects of GDU irrigation on ground water (Goolsby and others, 1989;Berkas and Komor, 1996) and the James River (Briel, 1989).…”