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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Extreme events, natural variability and climate change : Lessons from surat floods: planning structural and non structural flood control measures
Lessons from surat floods: planning structural and non structural flood control measures
Author : Dr.S.M.Yadav(1)
ABSTRACT: Surat is one of the most vulnerable cities affected by repeated flooding. It is situated on the bank of river
Tapti. Tapti River is one of the major perennial West flowing of Indi, Asia. The river is known for its high magnitude of flood
since 1939. In 1974 Ukai Dam was constructed at Ukai. The Ukai Dam is situated at 93 km upstream of Surat City. The
Surat city is located on the confluence of River Tapti and Arabian Sea. The recent floods of 1994, 1998 and 2006 resulted
in the loss of millions of dollar due to damages caused by flood apart from casualty of men and animals. After flood of
1994 due to so called plague so many people died and wide media coverage resulted in the world wide frightening. The
city was considered as the dirtiest city of the country. Due to climate change the events of short duration high intensity
rainfall has increased in the Tapti River basin. In the year 1998 the dam was approximately ninety percentages full. Due to
short duration high intensity rainfall resulted in the high inflow to the dam forced dam authority to release water from the
dam. The carrying capacity of river was approximately 3 lacs cusec and the release water was more than two times its
release capacity resulted in flooding of Surat city. The some parts of the city were under water. The depth of water varies
from 0.3 meters to 3.0 meters in the certain parts of area. In 2006 the situation of 1998 was repeated and this time the
situation was worst than 1998 flood. The ninety percentage areas of city were under water. The depth of water varies from
0.3 meters to 3.0 meters in the certain parts of area. The Surat was considered one of the dirtiest cities of the country
before 1994. The rule level for the operation of reservoir has been revised twice after 1998 floods to accommodate high
inflows without flooding downstream side of the dam. Apart from this the earthen bunds and retaining walls on the either
side of the river bank has been constructed to pass flood safely. The local authority has shifted the urban poor who were
residing on the banks of river and were worst affected by these floods to EWS housing. Apart from public awareness
programme, health measures, spreading of pesticides, fogging and several other measures are discussed in detail in this
paper.
File Size : 295,859 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Extreme events, natural variability and climate change
Date Published : 19/08/2015
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