RAIN WATER HARVESTING

The main purpose of rainwater harvesting is to stop the flowing rainwater and make it percolate in the soil more efficiently which will eventually help to recharge ground water and increase the level of water table.

And moreover it is the technique of collecting, storing and distributing rainwater for multiple uses. The collected water can be stored for direct use or diverted for bore well/ groundwater recharge. In simple terms it is a way to capture the rainwater when it rains, for later use.

In relation to the water resource assessment, surface runoff is the fraction of precipitation that does not infiltrate at the land surface and may be retained at the surface or result in overland flow toward depressions, streams and other surface water bodies.

The basic difference is just quantity. If the run off exceeds the banks of the stream or river, it is a flood. Controlling runoff by creating opportunities for the water to sink down into an aquifer can prevent flooding.

The scope of work includes study of the following

• ROOF TOP HARVESTING TECHNIQUES

• SURFACE RUN OFF CALCULATIONS

• STORM WATER DRAINS DESIGN

• STORAGE STRUCTURES