Complex sentence: The plan envisage the construction of about 20 km long covered feeder channel that will serve to divert the water from several tributaries to the Radika river, which will then be channeled to the reservoir through a pipe system providing additional inflow to existing hydro power plants.
Split into simpler sentences: The plan envisages the construction of a approximate 20 km long, covered feeder channel that will serve to divert the water from several tributaries to the Radika river. This will then be channeled to the reservoir through a pipe system providing additional inflow to existing hydro power plants.