“ANALYSIS OF RAINFALL DATA AND DESIGN OF STORM WATER DRAINAGE SYSTEM IN AN URBAN AREA”
Keywords:
Rainfall, Runoff, Storm-water, Rainfall intensity, Flood frequencyAbstract
Rainfall data of past available in minute form is analyzed and new data from year 2001-2015 is analyzed. The new
minute data is obtained by co-relating the previous minute data which is available to us . After co-relating flood frequency is
being found out .As new data are available in hourly form and old data in minute . Rational method is used for estimating
runoff from catchment. Different curves of intensity vs duration, runoff coefficient vs duration, 10CI vs duration are derived
for city of surat and design of drain is carried out by manning’s chart in study area.