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Design of storage tanks for water harvesting in rainfed areas

Authors
Journal
Agricultural Water Management
0378-3774
Publisher
Elsevier
Publication Date
Volume
18
Issue
3
Identifiers
DOI: 10.1016/0378-3774(90)90043-x
Disciplines
  • Agricultural Science
  • Design

Abstract

Abstract A procedure was developed to design a tank for water harvesting and compute its benefit-cost ratio for a region in northern Punjab. It was observed that the total cost of tank per unit of capacity decreased with increasing tank capacity. Tanks designed on the basis of seasonal runoff and used for presowing irrigation of wheat, are the most beneficial with a benefit-cost ratio ranging from 1.60 to 4.56 for catchment areas varying from 1 to 100 ha. The probability level of the lowest assured runoff corresponding to the lowest annual cost per unit of available water increased with increasing tank capacity and varied from 40 to 80%.

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