Big rivers
To the category of large rivers (rivers whose basins are located in several geographical zones, and whose hydrological regime is not characteristic for each individual geographical zone) belong lowland rivers with a basin area exceeding 50,000 km², as well as predominantly mountainous rivers with a catchment area exceeding 30,000 km²
Source: Order of the Ministry of Natural Resources of Russia dated April 25, 2007 No. 112 "On Approval of the Methodology for Hydrographic Zoning of the Territory of the Russian Federation" (Registered by the Ministry of Justice of Russia on May 23, 2007 No. 9538)
Понятие «большие реки» женского рода.
| Падеж | Единственное число | Множественное число |
|---|---|---|
| Р | большей реки | больших рек |
| Д | большей реке | большим рекам |
| В | большую реку | большие реки |
| Т | большей рекой | большими реками |
| П | большей реке | больших реках |