Limitations Imposed By High Water Demands

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Limitations imposed by high water demands:- Various opinions on implementing water harvesting techniques fail to consider the important water demand-availability conditions. Specifically water requirement for a particular area is calculated based on current social- economic schemes as well as the pastoral climate, which gets attuned by the resource atmosphere of the village, disposal of various technologies to access them along with the provincial legislative policies for the specific time frame. Regions incorporating substantial watered farming methods before, and having good water bequest along with good policies and governmental support will require more water for agriculture even though they might face water scarcity. This is the…show more content…
For Bihar, the concentration is low however cold and sub-humid weather eases the requirements for irrigation considerably. In most of the regions, the chief concern for societies is to access the water for agriculture and not the physical accessibility of water. For deprived societies, the harvesting of water fail to offer any cost-effective solution for gaining access to the water.

Need for a Cohesive Approach:- The volume of runoff along with its occurrence pattern decides how much surplus amount a particular water harvesting structure can store. A catchment of one kilometer square experiencing an overall yearly runoff of 20 cm can produce a surface flow of 0.20 MCM. Generally, the actual pattern decides how much amount could be stored. Short duration, high concentration rainfalls are normally seen in parched and semi-arid parts of India, giving rise to flash floods. During main monsoon days, most of the runoff takes place, leading to less proficiency of collection of such runoffs thereby decreasing the capacity of the structures developed for the same. However, if, large systems are built to store high runoff concentrations, it helps in increasing the proficiency of collection of runoffs, which leads to expanding cost per unit volume of water stored. That’s why it is argued that, if collected water is directly diverted to the plants for use in parched areas, then only runoff harvesting should be implemented. In
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