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Estimation of Time Variant Water Availability and Irrigation Potential of Small Ponds in a Semi-arid Region of Rajasthan, India

Estimation of Time Variant Water Availability and Irrigation Potential of Small Ponds in a... A field experiment was conducted to assess water availability and irrigation potential of two small, shallow and Ephemeral ponds located in a small watershed of the semi-arid region of Rajasthan, India. The Holistic Water Depth Simulation (HWDS) model was employed for estimating the pond water availability with 3 years field data (2006–2008). The analysis revealed that the value of depth of water in the selected ponds predicted by the HWDS model had closed match to the field data. The index of agreement between measured and predicted values of depth of water in the selected ponds was found to be ranged from 0.93 to 0.94 for the pool data sets. The F and Student’s T test between measured and predicted values revealed that model estimates were not statistically different from measured values at 0.01 % level of significance. Analysis revealed that mean pond volumetric water availability for the selected ponds ranged from 1448 to 5001 m3 during the study period. During the off monsoon seasons, water availability period was varied between 35 and 78 days with a mean of 61 days. Analyses revealed that water availability in the selected ponds lasted at least 48–61 days. The off monsoon season irrigation potential of ponds with one and two irrigations for the rainfed crops at critical growth stage in the region was estimated to be 12.6 and 6.3 ha, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India): Series A Springer Journals

Estimation of Time Variant Water Availability and Irrigation Potential of Small Ponds in a Semi-arid Region of Rajasthan, India

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References (20)

Publisher
Springer Journals
Copyright
Copyright © 2016 by The Institution of Engineers (India)
Subject
Engineering; Civil Engineering
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-016-0141-7
Publisher site
See Article on Publisher Site

Abstract

A field experiment was conducted to assess water availability and irrigation potential of two small, shallow and Ephemeral ponds located in a small watershed of the semi-arid region of Rajasthan, India. The Holistic Water Depth Simulation (HWDS) model was employed for estimating the pond water availability with 3 years field data (2006–2008). The analysis revealed that the value of depth of water in the selected ponds predicted by the HWDS model had closed match to the field data. The index of agreement between measured and predicted values of depth of water in the selected ponds was found to be ranged from 0.93 to 0.94 for the pool data sets. The F and Student’s T test between measured and predicted values revealed that model estimates were not statistically different from measured values at 0.01 % level of significance. Analysis revealed that mean pond volumetric water availability for the selected ponds ranged from 1448 to 5001 m3 during the study period. During the off monsoon seasons, water availability period was varied between 35 and 78 days with a mean of 61 days. Analyses revealed that water availability in the selected ponds lasted at least 48–61 days. The off monsoon season irrigation potential of ponds with one and two irrigations for the rainfed crops at critical growth stage in the region was estimated to be 12.6 and 6.3 ha, respectively.

Journal

Journal of The Institution of Engineers (India): Series ASpringer Journals

Published: Jan 20, 2016

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