As it meanders 215 miles [350 km] eastward, it is joined by other rivers until it finally pours through an estuary some 18 miles [29 km] wide into the North Sea.
Ida poole lookleva 350 kilomeetri pikkuse jõega ühineb teisigi jõgesid, kuni see lõpuks jõuab umbes 29 kilomeetrit laia suudmelahte Põhjameres.