The scarce rainfall, high temperature and evaporation lead to limited water resource in the dry arid and semiarid regions. Dry regions suffer from both the problems of quantity and quality of water. In most part of the dry region, groundwater is either saline or having high nitrates and fluoride content especially in States of Rajasthan, Gujarat, Haryana, Punjab, Andhra Pradesh [...]
The following points highlight the techniques employed for rainwater harvesting in arid regions. The techniques are: 1. On-Farm Reservoir/Farm Pond 2. Micro-Catchment Water Harvesting 3. Saucer Basin/Semi-Circular Bunds. Technique # 1. On-Farm Reservoir/Farm Pond: On-farm reservoir is simply a dugout excavation, which is easiest to construct for the purpose of storing water essentially from surface runoff. The on-farm reservoir or [...]
The following points highlight the three modern water harvesting techniques of arid regions. The techniques are: 1. Virda 2. Dew Water Harvesting System 3. Greenhouse Water Harvesting. Technique # 1. Virda: Virda is an interesting and unique indigenous water harvesting system developed in arid and saline region of Kachchh, Gujarat. Basically, virdas are shallow wells dug in low depressions of [...]