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Accueil du site → Master → Inde → 2015 → Development of agricultural land drainage coefficient through rainfall analysis for Hingoli district

Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (2015)

Development of agricultural land drainage coefficient through rainfall analysis for Hingoli district

Kapse, Maroti Uttamrao

Titre : Development of agricultural land drainage coefficient through rainfall analysis for Hingoli district

Auteur : Kapse, Maroti Uttamrao

Université de soutenance : Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani

Grade : Master of Technology (MT) in Irrigation and Drainage Engineering 2015

Résumé
Talukawise daily rainfall data of 30 years (1983-2012) were analyzed to ascertain 1 to 2-5 consecutive day’s maximum rainfall of Hingoli district. The observed values were estimated by Weibull’s plotting position method and expected values of maximum rainfall were estimated by four well known probability distributions viz., Gumbel, Lognormal, Log Pearson Type HI and Normal. The relative performance of 4 probability distributions with respect to Weibull’s plotting position method applied to estimate 1 to 5 consecutive days maximum rainfall has been studied to understand the behavior of these distributions and to assess the reliability of design rainfall corresponding to various return period. Lognormal distribution with lowest Chi-squwere value found to be best probability distribution in predicting 1 to 5 consecutive days maximum rainfall for Aundha Nagnath and Hingoli talukas. Normal distribution with -lowest Chi-squwere value found to be best probability distribution in predicting 1 to 5 consecutive days maximum rainfall for Basmat, Kalmnuri and Sengaon talukas. 1 day and 2 to 5 consecutive days maximum rainfall corresponding to return period varying from 2 to 100 years, basic infiltration rate and crop tolerance period, help in determination of drainage coefficient for agricultural fields.

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