Indian Journal Of Natural Sciences ISSN: 0976 – 0997 Vol1I / Issue 7 / August 2011 © IJONS RESEARCH ARTICLE Consecutive Days Maximum Rainfall Analysis by Gumbel’s Extreme Value Distributions for Southern Telangana Umarfarooque Momin1*, Prasad .S .Kulkarni2 , Sirajuddin. M. Horaginamani3, Ravichandran M 3, Adamsab.M.Patel4 and Hina Kousar4 1Central Research Institute for Dry land Agriculture (CRIDA), Saidabad, Hyderabad-500059, A.P, India. 2Dept of Soil and Water Engineering, College of Agricultural Engineering, UAS, Raichur-584 102, Karnataka, India 3Department of Environmental Management, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli-620024, Tamil Nadu, India. 4Department of Environmental Science, Kuvempu University, Shankaraghatta-577451, Shivamogga District, Karnataka, India. Received: 08 June 2011 Revised: 16 July 2011 Accepted: 28 July 2011 *Address for correspondence Mr.Umarfarooque Momin Central Research Institute for Dry land Agriculture (CRIDA), Saidabad, Hyderabad-500059, A.P, India E-Mail :
[email protected] ABSTRACT Annual one day maximum rainfall and two to five consecutive days maximum rainfall corresponds to return period varying from 2 to a100 years are used by design engineers and hydrologists for economic planning, design of small and medium hydrologic structures and determination of drainage parameters for agricultural lands under semi arid climate. A maximum of mean annual 1 day and 2 to 5 day consecutive rainfall was expected to 87.27mm, 108.2 mm, 119.73 mm, 128.61mm and 137.30 mm respectively. A maximum of 80.1 mm in 1 day, 93.1 mm in 2 days, 111.18mm in 3 days, 119.97 mm in 4 days, and 128.13 mm in 5 days is expected to occur at Hyderabad every 2 years.