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ABSTRACT
Hydrological study of Man (Chandrabhaga) river basin were done from the available rainfall and stream flow records of years 1996-2010.Data was taken from HYDROLOGY PROJECT DIVISION NASHIK FOR CASE STUDY. The mean annual rainfall of Sidhewadi station is about 627.64 mm. Cumulative mass inflow curve was drawn to estimate the maximum reservoir capacity of small dam. In this study, a flood frequency analysis of Man River basin is carried out by Log-Pearson Type-III probability distribution method and Gumbel's distribution. From the flood frequency analysis maximum flood discharge is calculated for the recurrence interval of 10, 100, 200, 1000 years. From the study duration of flood was calculated. A small dam can be constructed of storage capacity of 4.60 Mm3.Study was helpful to increase area under irrigation and design and construction of hydraulic structure on Man river.
KEYWORDS: stream flow, rainfall, Log Person Type III, flood frequency, flow duration.
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I. INTRODUCTION
Planning, design, and management of water resources systems often require knowledge of flood characteristics, such as peak, volume, and duration. Fundamental importance in many design problems is the determination of the probability distribution of maximum annual discharge (7). Based on an assumed probability distribution, one can compute statistics of flows of various magnitudes, which can then be used for planning, design, and management of water resources projects. (11)
The river system in any region depends upon the slope of land surface and velocity of stream. Rivers of Indian plateau are shorter in length than the Himalaya region. These rivers have ample amount of water in rainy season and in summer most of the rivers are dry (8). These rivers have greater importance in western Maharashtra region. In the western Maharashtra region one of eastward flowing river is Bhima it has tributary Man River.
The present study was taken to development of mass curve, flow duration curve and carry out flood frequency analysis from the available records of the rainfall and stream flow. This study is a prerequisite study in decision making policies for the design of any hydraulic structure.
The data is taken from hydrology project division Nashik for study.
Study Area
River Gauge Station: Sidhewadi River Gauge station is selected for hydrological study. This station is 65...