  the ems (; ) is a river in northwestern germany. it runs through the states of north rhine-westphalia and lower saxony, and discharges into the dollart bay which is part of the wadden sea. its total length is 371&nbsp;km. the state border between the lower saxon area of east friesland (germany) and the province of groningen (netherlands), whose exact course is the subject of a border dispute between germany and the netherlands, runs through the ems estuary. ==river course== the source of the river is in the southern teutoburg forest in north rhine-westphal
Federal_waterways_in_Germany GermanyaNetherlands_border North_Sea Rivers_of_Lower_Saxony Rivers_of_North_Rhine-Westphalia Rivers_of_the_Netherlands