Flood risk Evaluation- Losses and Mitigation Strategies in case of Surat Floods

1. FLOOD RISK EVALUATION
OFSURATCITY-CASESTUDY
BY
Prof. Dr. Neha Bansal
Professor
SRM
School of Architecture
& Interior Design
FLOOD RISK EVALUATION
OF SURAT CITY- CASE
STUDY

2. Disasters
CATASTROPHES ON THE RISE
Meteorological records show a rise in
weather-related disasters since 1980.
Climate change affects some weather,
but experts caution against blaming it
for every extreme event.
Climate change may not cause a
particular storm, but rising sea levels
can worsen its impact. In 2012 a nine-
foot storm surge from Hurricane
Sandy hit New York City at high tide,
making the water 14 feet higher than
normal at the tip of Manhattan.
Flooding destroyed neighborhoods
and beaches in outer boroughs.

3. Flood Risk-
SuratCity
The study aims to understand the impact of 2006
Floods in Surat city and its sequence of events to
evaluate the losses

4. 2006 Flood
devastation

5. he 2006 Surat flood occurred
over 7–10 August 2006, which
affected Surat, India, and
nearby villages. About 80–95%
of Surat was flooded.The
sudden release of a large
amount of water into theTapti
River from the Ukai Dam
caused the flood.

7. 3rd August 2006 333.60ft
5th August 2006 335.5 ft
6th August 2006 337 ft
7th August 2006 339 ft
Water level of Tapi
river rose from
333.60 ft to 339 ft in
4 days.

8. Flood
inundation
mapping

9. 3rd August
2006
- Heavy Rain
Started
- Flood Prone
5th August 2006
-The water level
reached 335.5 ft
(crossed HFL 334
ft)
- Govt. and
people initiated
precautionary
procedures
7th August 2006
-The flood
cushion situation
occurred
- Sudden water
quantity
released
- Govt. worked
rescue
operations
11th August 2006
-Water level
started decreasing
- Govt. rescued
about 100 lives
from flood
- Roads started
cleaning
- Flood wastage
started removing
from people’s
houses
- Medical checkup
camps planned for
keeping safe
7th September
2006
- Report of
People’s
Committee
published
- 150 deaths
recorded
- Loss and
damage of about
21000 crore
noticed
TIMELINE OF EVENTS IN FLOOD MANAGEMENT
Early warning
Emergency
management
Post Disaster
management
floods

10. Losses
The flood's direct and
indirect monetary losses has
been estimated at Rs 16,000
crore, of which Rs 9,500-cr
was in form of direct
damages and Rs 6,500 crore
in form of lost production.

11. Damages
The flood's direct and
indirect monetary losses has
been estimated at Rs 16,000
crore, of which Rs 9,500-cr
was in form of direct
damages and Rs 6,500 crore
in form of lost production.

12. State disaster
authority &
institutional
framework
Flood
Disaster
management State Level
Mechanism
Water resource department
State technical Advisory
committee
Flood Control Board
Irrigation Department
Public Works department
Central level
Mechanism
Central Water Commission
Ganga Flood Control
Commission
National Disaster
Management Authority

13. Emergency
management

14. Emergency
management

15. Post disaster
scenarios

16.  After The Flooding Into The Surat City, The City Has Been Recovered Its
Status And Stood Up Again Within Just 8 Days.
 Surat Municipal Corporation Had Generated A Committee For Flood
Forecasting And Emergency Situations, Combining Una Officials And Other
Some Scientists And Engineers.
 After The Flood, Surat Municipality Has Decided To Increase Ukai Dam
Height About 7 Ft More AndThen 3 Ft Another, Respectively.
 Green Belts Are Prepared On The Both Of Road Sides And Other
Appropriate Places.
 Nowadays The Buildings Structures Are Also Be Constructing With
Earthquake ResistanceTechnology, Fire Proof, Water Proof, Etc.
 Drainages Are Improved With Higher Capacity Of Flowing Drains, And With
Higher Strength Also.
 People Got So Much Aware For Fighting Back Any Tough Situations And
Mentally AbleTo Response InThat.
CITY
SIGHT

17. Where we
stand in flood
disaster
management?
??
Both--the People'sCommittee on Gujarat Floods of August 2006 and Surat
Citizens' CouncilTrust's Committee--have released their reports, indicting the
government.The former was set up by two ngos, Narmada Abhiyan and
Gujarat Sarvodaya Mandal, with a former acting chief justice of the Gujarat
High Court R A Mehta as chairperson.The latter had nine members, including
engineers, architects and social scientists.
According to the report of the people's committee, released this July, the flood
was largely caused by gross mismanagement of Ukai dam operations and
could have been averted, or minimised, if the authorities had taken note of
the signs of an approaching flood and released water from the dam
promptly.
The Surat citizens' committee has also found mismanagement of the Ukai dam
waters, from data obtained under the Right to Information Act, 2005. "The root
cause of such flooding is faulty urban development practices. City development
plans have failed to study rivers as an integral part of a city's drainage network.
Hence flood plains have been consumed for development. Surat has a history of
floods, which have grown as the city has expanded and eaten into the course of
Tapi river," says Biswaroop Das, a committee member and urban development
expert.

18. Questions ?