Batang Kumu sub-watershed is one of the sub-watersheds of the Rokan Watershed which has a 3,311 ha Catchment Area located in Rambah Hilir District, Rokan Hulu Regency. The Batang Kumu sub-watershed has a river that plays a strategic role and is the mainstay of people who live in the downstream area for agricultural activities in the form of rice fields (irrigation) and other agricultural commod…