St Lawrence River River Missouri/Mississippi Mackenzie River Yukon River
Yellow River Yangtze River Mekong River Xi Jiang River
South East West North
Congo River Limpopo River Zambezi River Orange River
Sao Francisco Orinoco River Parana River River Amazon
Congo River River Nile Zambezi River Orange River
Ganges River Irawaddy River Tigris River Indus River
Yenisei River Ural River River Ob River Volga