Disaster Management Support Programme of ISRO -

Operational Flood Mapping and Management

ByP.Manjusree

Scientist Disaster Management Support Group

NRSC, ISRO, Hyderabad, IndiaE-mail: manjusree_p@nrsc.gov.in

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Flood Proneness in India

Disaster Date Cost(US$ X 1,000)Flood 1993 7,000,000Flood 2006 3,390,000Flood 2005 3,330,000EQ 2001 2,623,000Flood 2004 2,500,000Storm 1999 2,500,000Flood 2005 2,300,000Storm 1990 2,200,000Flood 2009 2,150,000Storm 1996 1,500,300

Economic Damages

Natural Disaster Occurence :1980 - 2010

• Cyclones: 8% of TGA (Long coastline)• Floods: 12% TGA (Major rivers- Brahmaputra,

Ganga)• A Major Disaster occurs every 2-3 years• Recent Major Flood disasters: Uttarakhand ,Jun2013;

Cyclone “PHAILIN”, Oct 2013; J& K Floods Sep 2014; Cyclone “HUDHUD” Oct 2014

Source: http://www.preventionweb.net/Source: http://www.preventionweb.net/

http://en.wikipedia.org/

ISRO-DMS Programme at a glance

Institutional Mechanism:

DMS Decision Support Centre (DSC) at NRSC

in association with Nodal Agencies

MHA, MOA, Cabinet

Secretariat, NDMA,

State Agencies, NGOs International CommitmentsInternational Charter on

Space & Major Disasters, SPIDER, Sentinel Asia, …

Key Areas for R&DLandslide/ Earthquake

Precursor Studies, Extreme Weather Events

Key Developmental EffortsAirborne SAR,

Communication Equipments, Support to IOTWS,

Constellation of EO Satellites

National Database -for Emergency

Management (NDEM)

Natural Disasters -Monitoring/ Damage

Assessment

VSAT based VPN- for Emergency Communication

Strengthening Early Warning

Systems Tsunami, Floods, Cyclone,

Drought, Landslides..

Development of Hydro-met.

Networks, DSS, ..

Capacity Building on DMSExclusive Training Prog

MHA: Ministry of Home AffairsMOA: Ministry AgricultureNGO: Non-Governmental OrganisationsNDMA: National Disaster Management Authority

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Flood Disaster ResponseKey Elements

•Meteorological observations•Hydrological observations•Web News scan• Local Depts

Flood Watch

•Type, Phase & intensity of the disaster•Optical & Microwave•Triggering Inter’l Charter & Sentinel Asia•Aerial survey

Satellite data planning & Acquisition

•Development of automation procedures for•Geometric correction•Delineation of water & flood layer• Integration with database layers

Satellite data Analysis

• Flood Maps at various scales• Flood damage statistics• Flood report• Flood progression & recession maps, Cumulative flood maps,

flood persistence maps

Product generation

•E-mail, ftp, drop box etc•Web portals Bhuvan, NDEM , DSC, NRSCProducts dissemination

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Pareechu Lake-2004

Assam Flds-1998

Flood Mapping and Monitoring- Decadal JourneyReaching the needy through remote sensing

• Limited swath• Moderate resolution• Fortnightly coverage with

multiple satellites• Visual interpretation• Manual processing

• Large swath• Multi[ple resolutions• Alternate day coverage

with multiple satellites• Digital processing

• Large swath• High resolutions• Day & Night coverage • All weather capability• Support to States (RSACs, FMISCs)• Bhuvan-Flood services• International Disasters

Punjab Fld-1988

Sahibi Fld-1977

• Flood Hazard Zonation

• Flood Prone area• Flood Alert ………

Kosi Floods-2008

Flood Products

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

• A cyclonic storm “Phailin” made landfall ataround 9 pm on 12th October 2013 nearthe coast of Gopalpur in Ganjam districtinundating vast stretches.

• DSC kept a close watch and RISAT-1 datawas planned over the affected areas.

• Combination of RISAT-1 data along withother satellite data helped in continuousmonitoring of the flood event.

Cyclone ‘PHAILIN’ – October, 2013

Bay of Bengal

Bay of Bengal

Pre-Event

RISAT:18-Sep-2013 Radarsat:12-Oct-2013

Bay of Bengal

RISAT:13-Oct-2013 Radarsat:14-Oct-2013

Post-Event

RISAT:16-Oct-2013 RISAT:18-Oct-2013RISAT:17-Oct-2013

Bay of Bengal

Bay of Bengal

Radarsat:15-Oct-2013

Bay of Bengal

Flood Inundation

Monitoring of the event Cumulative Flood MapInundation during 12-16, Oct, 2013

Flood Inundation

nrsc

nrscFlood Hazard Zonation Atlases

Assam (1998-2007) Bihar (1998-2010)

• Well appreciated by the State Administration

• Used for Flood mitigation measures

• Used for Regionaldevelopment plans

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Dissemination on web portals

bhuvan.nrsc.gov.in

NDEM private portal-

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Activations (2010-14)2010 : Gandak Embankment Breach in Bihar2011: Earthquake, Landslide, Sikkim - North East India2012: Floods & Landslides & Flood in Assam 2013: Cyclone Phailin & Floods in Uttarakhand2014: Cyclone Hudhud , Floods in northern India & Forest fire in Mt. Japfu, India

International Charter SupportGandak Embankment Breach in Bihar- Sep 2010

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Objective: To investigate the polarimetric SAR data for delineation of submerged crop fields

Satellite data: SLC of C-band data of 15-Oct-2011, 10-Sep-2010 and 03-Sep-2009 from RADARSAT satellite

Polarimetric SAR data - Flood studies

Methodology Results

Conclusion: C-band Polarimetric SAR data has the potential to identify the partially submerged crop fields

which is very useful for flood damage assessment

NISAR Mission - Flood Disaster Application

On-going :• Major floods and cyclones in India are monitored and mapped in

near real time using C-band SAR data from RISAT andRADARSAT satellites

• Flood maps at State, District and detailed level along with floodinundated area statistics are disseminated to the concerned innear real time.

• Flood damage assessment for selected areas is carried out onrequest basis

Prospective applications:• Monitoring and mapping of wide area floods in India- NISAR

increases the frequency of monitoring• Detailed flood mapping for specific areas• Flood damage assessment using Polarimetric data• Monitoring and assessment of wetlands• Monitoring of shallow flood plains

NISAR Science Workshop, Ahmedabad– 17-18, December 2014

Thank you for the kind attention……