Kathmandu Valley And Scarcity Rainwater Harvesting

Benefits of Rainwater Harvesting Support to meet the increasing water scarcity Recharging the ground for future use Collection of rain for immediate use

3 MEASURES PROPOSED Groundwater Well Rooftop Water Harvesting for direct use and groundwater recharge Reserve for Dry Season The application of this technique can contribute significantly to reduce the problems of flooding as well as of groundwater level sinking. Rain- water Tank

100 m mm (1.6 m) 160 m 3 However, there will be loss of rainfall due to evaporation and retention on the surface about 10 to 20 % therefore 128 m3 water can be collected for a year

Debris Screen First Flush Gutter Downpipe

Screen for debris Bucket for filtered water Manual System Semi Automatic System

(MOPE) JICA estimates that Kathmandu Valley is loosing 2.5 m of ground water every year