NDLI: Estimating Water Balance of Small Reservoirs in Arid Regions: A Case Study from Kachchh, India

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Estimating Water Balance of Small Reservoirs in Arid Regions: A Case Study from Kachchh, India

Content Provider	Springer Nature Link
Author	Kumar, Sanjay Dayal, Devi Machiwal, Deepesh
Copyright Year	2016
Abstract	Quantification of hydrological processes is necessary for management of small reservoirs especially in arid regions characterized by hot climate, scanty rainfall magnitudes and large rainfall variability. This study focuses on estimating inflow and outflow components of a small reservoir situated in arid Kachchh region of Gujarat, India, by developing a water balance model. Daily reservoir water levels were monitored for years 2012 and 2013. All water balance components, i.e. rainwater directly falling into reservoir, surface runoff, irrigation extractions, and evaporation and percolation, were either measured or estimated. Results indicated that rainfall has a fair control on amount of harvested runoff water. In year 2012, meagre rainfall (79 mm) could store 925 m$^{3}$ of water with 66 cm depth. In contrast, reservoir water levels were at 2.85 m depth in year 2013 with full capacity of 24,879 m$^{3}$ when rainfall totalled to 291 mm. The mean percolation rate (0.14 cm h$^{−1}$), determined from 24-h long-term infiltration tests, revealed that full storage will get depleted within 85 days. A major portion (51%) of storage was lost through evaporation and percolation, and only 21% stored water could be utilized for supplemental irrigation. This finding suggested that suitable measures need to be adopted to check evaporation and seepage losses from the reservoirs in arid regions for improved agricultural productivity. Moreover, results of this study may be useful for water resources managers and decision-makers to develop appropriate operational strategies for the reservoirs in the study area as well as in other arid regions of the world.
Starting Page	57
Ending Page	65
Page Count	9
File Format	PDF
ISSN	2249720X
Journal	Agricultural Research
Volume Number	6
Issue Number	1
e-ISSN	22497218
Language	English
Publisher	Springer India
Publisher Date	2016-12-20
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Small reservoir Plant Biochemistry Arid region Water balance model Water levels Percolation Evaporation Biodiversity Plant Sciences Cell Biology Plant Ecology Plant Genetics & Genomics
Content Type	Text
Resource Type	Article
Subject	Plant Science Food Science Agronomy and Crop Science

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