RWH consists of simple systems to collect, convey, and store rainwater. Rainwater capture is accomplished primarily from roof-top, surface runoff, and other surfaces.
RWH either captures stored rainwater for direct use (irrigation, production, washing, drinking water, etc.) or is recharged into the local ground water and is call artificial recharge.
.ppt (3) Why Rainwater Harvesting?
Conserve and supplement existing water resources
Supply water at one of the lowest costs possible for a supplemental supply source.
Commitment as a corporate citizen - showcasing environmental concerns
Replenishing local ground water, where lowering of water tables has occured
.ppt (4) Why Not RWH?
Not applicable in all climate conditions over the world
Collected water quality might be affected by external factors
Performance seriously affected by climate fluctuations that sometimes are hard to predict
Collected rainwater can be degraded with the inclusion of waste water runoff
.ppt (5) Condensation Let’s take a look at The Water Cycle Precipitation Evapotranspiration Evaporation Infiltration Surface Runoff Surface Water Consumption Groundwater Sea water intrusion
.ppt (6) Condensation Average Rainfall Average Annual and Monthly Precipitation – Average rainfall over one year period and monthly intervals and usually based on global atmosphere Precipitation Consumption Groundwater Surface Water