ryūikichisui
1. river basin management; river basin flood control
Noun
1. river basin management; river basin flood control
1. drainage basin; catchment basin
1. river management; river improvement
1. Probably the area.; Likely the region.
1. Wasn't a basin/area.; Wasn't in the region.
1. Probably the basin.; Probably the area.
1. Basin/area; Watershed
1. Is not a region.; Is not within the area.
1. Was a basin/area/region.
1. It's not a region.; It's not in that area.