Modelling of Short Duration Isopluvial Map for Raichur District Karnataka
IJSART - Volume 5 Issue 4 –APRIL 2019 ISSN [ONLINE]: 2395-1052 Modelling of Short Duration Isopluvial Map For Raichur District Karnataka Mohammed Badiuddin Parvez1, M .Inayathulla2 1Dept of Civil Engineering 2Professor, Dept of Civil Engineering 1, 2 UVCE, Bangalore University, Bangalore ,Karnataka, India. Abstract- Everyoneacknowledges that it rains, runoff is The scope of this study was to predict rainfall generated for a design point of view we should know how intensity for the stations using the data of 1998 to 2016 spread much and how often it rains on our project in Raichur District by using Log Normal distribution and location.Estimation of rainfall intensity is commonly required Develop Isopluvial Maps of different duration and return for the design of hydraulic and water resources engineering period. control structures. The present study aimed the Estimation of rainfall intensityin Raichur District using twenty five Rain II. MATERIALS AND METHODS gauge Station with 19 years of rainfall data (1998 to 2016). Log Normal Distribution, techniques are used to derived the 2.1 Study Area rainfall intensity values of 2,5,10,15,30,60,120,720,1440 minutes of rainfall duration with different return period. The short duration IDF using daily rainfall data are presented, which is input for water resources projects. Isopluvial maps were developed for 25years, 50years, 75years and 100years return period Keywords- Isopluvial Maps, Log Normal Distribution, Rainfall Duration, Return Period, Rainfall Intensity. I. INTRODUCTION Short-term, high-intensity rainfall that occurs in inland areas with poor drainage often produces urban flash floods. Densely populated areas have a high risk for flash floods.
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