Classes | Attributes | Representation rivers |
I | Smooth-flowing, steady rivers, streams, and lakes | Kherlen, Selenge, Orkhon, Tuul and its headwater, Zawkhan and its estuary |
II | A river with many rocks and whirlpools, and a lake with waves | Ider, Eg, Kharaa, Yeruu, Delger |
III | A mountain river with large rocks and a lake that requires boating skills, rapids and waves | Bogd, Suman, Khowd, Bulgan river, Ongi, Baidrag, Eg river and its estuary and middle part, Khuwsgul |
IV | Strong currents and raging rivers in floods | Chuluut, Khowd, Orkhon, Tuul and its headwater, Zawkhan and its headwater |
V | Rivers and streams with many rapids, waterfalls and gorges in rugged mountain | Turgen Uws, Uyench, Bodonch, Khowd and its headwater, Choirgo rapid in Chuluut gorge |