# | Classification | Water temperature | Rating | Representation rivers and lake |
1. | Very cold | 7˚ - 13˚ | Stiffening effect 0 | Dayan, Khuwsgul lake and lakes around it, Altai mountain rivers and lakes |
2. | Colder | 14˚ - 16˚ | Appropriate 1 | Uureg, Tolbo |
3. | Cold | 17˚ - 19˚ | Appropriate 2 | Telmen, Terkhiin tsagaan lake, Oigon, Sangiin dalai, Suman, Chuluut, Ider, Selenge river |
4. | Warm | 20˚ - 24˚ | Appropriate 3 | Achit, Buun Tsagaan lake, Ganga lake |
5. | Warmer | 25˚ - 27˚ | Appropriate 4 | Ubs, Khar-us, Buir, Khyargas, Orog lake |