りゅういき
流域
1. drainage basin; catchment basin; river basin; watershed; valley
2. Drainage basin]] A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean. In closed drainage basins the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, dry lake, or a point where surface water is lost underground.
Read “Drainage basin” on English Wikipedia
Read “流域” on Japanese Wikipedia
Read “Drainage basin” on DBpedia
Read “Drainage basin” on English Wikipedia
Read “流域” on Japanese Wikipedia
Read “Drainage basin” on DBpedia
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