Farmers get really shocked by their size of water bills. Rain water harvesting in farms can really help in efficient use of water by farmers in their farms. It is a convenient solution for farmers in case of water scarcity or any water problem. With such high water usage, the return on capital will be between 2 to 6 years by rain water harvesting in farms. Rainwater harvesting systems can be simple to construct from inexpensive local materials so it is very easy for farmers to get rainwater harvesting systems nstalled in their farms. The use of rainwater harvesting system is very effective and efficient as a source of irrigation water for farms.Farmers can easily grow crops in off season and agriculture can be easy because of rain water harvesting system installation in farms.