Herein we developed a practical evaluation tool in the research.
Roof top rainwater harvesting for existing buildings.
Roof based rainwater harvesting refers to collecting rainwater runoff from roof surfaces which usually provides a much cleaner source of water that can be also used for drinking.
Rooftop rainwater harvesting this is the best and most effective method of harvesting rainwater for apartments as it is less expensive and if implemented efficiently helps in augmenting the groundwater level of the area.
Land based rainwater harvesting occurs when runoff from land surfaces is collected in furrow dikes ponds tanks and reservoirs.
Existing rooftop rainwater harvesting system is an acceptable solution for alleviating the water shortage problem in urban areas.