federal department of the environment, transport, energy and communications detec federal office for...

Federal Department of the Environment,Transport, Energy and Communications DETEC

Federal Office for the Environment FOEN

Towards a Swiss Flood Information System

2nd expert meeting on hazard/disaster data

EU Flood information May 19th 2011

Division

2 Expert meeting on flood data| Brussels, May19th 2011O. Overney Switzerland

Topics

• Flood prevention in Switzerland• Databases on floods

• Past flood events• Flood protection investments• Hazard maps• Register of protection works

• Use and implication for flood prevention policies• Perspectives


Responsibilities for flood control in Switzerland

Federal Government Cantonal authorities Municipalities

Legislative authority

Material frameworkSupervision

Responsibilities for flood protection structures, emergency

planning and emergency organization

Execution

Subsidies


Needs („Information detail“)

Local / regional level

National level

International level


inventory of events StorMe

Process, date and time, area affected, damage

inventory of events StorMe

Process, date and time, area affected, damage

Register of protective structures ProtectMe

kind, type, dimension, year of erection, location, costs, state, maintenance need for renewal, overview security infrastructure

Register of protective structures ProtectMe

kind, type, dimension, year of erection, location, costs, state, maintenance need for renewal, overview security infrastructure

Hazard index map

process, pot. area affected for extreme event

Hazard index map

process, pot. area affected for extreme event

Hazard Map / Magnitude Map

process, probability, magnitude, area affected, techn. report

Hazard Map / Magnitude Map

process, probability, magnitude, area affected, techn. report

further fundamental data

AquaProtect, SilvaProtect, river cross sections, …

further fundamental data

AquaProtect, SilvaProtect, river cross sections, …

concepts and measures

planning, biological, technical, organisational

concepts and measures

planning, biological, technical, organisational

damage potential• object categories, standard values• single objects, insurance value

damage potential• object categories, standard values• single objects, insurance value

dealing with residual risk

emergency planning, warning , alerting, intervention, insurance

dealing with residual risk

emergency planning, warning , alerting, intervention, insurance

land use

• “Arealstatistik”, population poll• land use plans

land use

• “Arealstatistik”, population poll• land use plans

risk

• standardised (EconoMe)• detailed (MobiGIS)

risk

• standardised (EconoMe)• detailed (MobiGIS)

local level

Integral information system about natural hazards – Local level


Information System on Natural Hazards

Data of national interest

evaluations, data aggregation, analyses, overlay with further data, …

• where are the largest risks? → administration, insurance

• what is the state of the safety infrastructure? → politicians

• …

commune

canton

federation

local

national

• is my house endangered? → private people, economy, insurance, …


• Indicators FOEN

• Controlling

• Umweltbeobachtung NUS

• Geodaten CH

Time (development)

Information system on natural hazards

national

• EEA

• WISE

• …

international


Relation to other activities

Environmental survey netSwitzerland (NUS)

FOEN

Handling strategyNatural hazard

(FOEN)

Geoinformation act /Public information act

Harmonization and access to geoinformation

Protection of persons, goods and environment against natural hazards

Overview on the environmental state for political and/or strategic decisions


Available informations and existing data base

Structure plan

Land planning

Land use planBuilding regulations

Processes

Other data

Cadastral survey. Infoslide

QPA GEWISS

Hazards and Risks

Hazard index map

AquaProtectSilvaProtect

Intensity map

Events

Event registerStorMe

WSL-Stormdamage data base

WSL historicaldata base

Pfister histor. flood data base

SLF Avalanchedata base

VAW Glacier inventory

UNIZH GlacierHazards

„Administration“ / Finance / Maintenance

ShowMe

FLIPSUBAL

ProtectMe

State of hazard mapping

Register of protection work

Emergency management

NEMIS GIN Basic informationTopographie Aerial view

Population data

Land use

…

Permafrost:PERMAKART

EarthquakeGeologie

Protection deficit map

Protection goal mapHazard map

Vulnerability


Topics





Integration of many other existing data bases

floods, landslides,rock falls in Switzerlandbased on media articles(WSL)

floods„Röthlisberger“(WSL)Euro-ClimHist:

histor. natural disasters(Pfister)

damage causingavalanches (SLF)

GlacierHazards (Uni ZH)

SBB, ASTRA …

permafrost-relatedrock falls(PERMOS)

past natural events inventoryStorMe (old)

damage data(insurance, others)

others …

Inventorydangerousglaciers(VAW)


observations per year(7 cantons no entries)

process

year avalanche rock fallflood/

debris flow landslide total

1998 272 41 311 386 1010

1999 563 60 196 186 1005

2000 558 229 604 406 1797

2001 31 167 216 169 583

2002 329 254 805 576 1964

2003 497 216 900 1214 2827

2004 235 284 1291 578 2388

2005 548 228 913 897 2586

2006 197 237 1113 1762 3309

2007 139 323 1320 854 2636

2008 126 181 538 319 1164

total 3495 2220 8207 7347 21269


What is StorMe used for?

• standardized documentation of past events

• Hazard mapping(retrospective: potential endangered areas; frequency of events)

• Model validation

• Proof of potential danger

• Awareness of population (risk communication)

• controlling of effectiveness (hazard maps, planning technical, organisational measures)

• emergency planning


Concept of StorMe

only simple export functionsno GIS-functionalitiesno web-interface

Data Owner: Cantons

Coordination: FOEN

survey forms2 x/y coordinate pairsno polygons

cantonal experts

cantonal experts

FOEN &research institutes

only read

consultant companies(with mandate)


Topics





Annual expenditure for security

Confederation16%

Cantons11%

Municipalities14%

Premium for private

insurances59%

640 mio € per year for security investments

140 mio. € We are forced to apply a method of priorization

…


Investment Maintenance Finance

Canton budget for flood protection investments

Canton project planification for floodprotection investments

Data base on federal subsidies for flood protection

Federal budget for flood protection investments

PlausibilityFluctuation

yearlycensus


Topics





Hazard and risk assessment

1

2

4

Hazard identification: "What can happen and where?“

• register of events• geomorphologic analysis

Hazard assessment: "How often and how intensively can it

happen?" • hazard maps

Planning of measures: "How can we protect ourselves?"

• spatial planning• structural measures• emergency planning

3 Risk assessment: “What is the potential loss?"

• risk maps


... different information requirementsStakeholders Scale Hazard maps Risk maps

Politics

> 1:2

5’000

Hazard index maps

• Type of danger• area concerned • 1/1000 yr event• covering all the territory

• number of persons affected• global risk• basis for policy dialogue

Regional land use planning

• Identification of conflicts with settlements and infrastructure

Reinsurance • maximum damage costs

Local land use planning

1: 2

000

– 1: 1

0’0

00

Detailed hazard maps

• flood extent • flood depth • flow velocity • (propagation time)• probabilities 1/1000 yr, 1/100 yr, 1/20 yr

Technical measures

• assets at risk / protection objectives• priority setting for measures• cost / benefit evaluation

Emergency planning

• endangered persons and infrastructure• high risks

Insurance • potential loss € / ha

Population


Different maps for different users


Hazard Assessment precision

flood zones Aquaprotect

hazard index map

hazard map (until 2011complete overview in CH)

reality

out o

f foc

us


Hazard Maps GIS Portal Zurich


Hazard Maps ShowMe


Aquaprotect public illustration < 1 : 50‘000


Aquaprotect for Experts

return period 50 yearsreturn period 100 yearsreturn period 250 yearsreturn period 500 years


Topics





Aquaprotect Damage Potential per Canton


Different stakeholders ... different needs

• Politician (politics)

• Spatial planner (land use planning)

• Flood engineer (technical measures)

• Civil protection (emergency planning)

• Insurer (insurance)

• Person affected (self-protection)

Who needs what?


... different scales

• International level (information, cooperation)

• National level (policies, strategies)

• Regional level (coordination, priorities)

• Local level (implementation)

At which scale?


Requirements FOEN /

Data of national interest

Data needs of other stakeholders

Different needs


Modular database construction for different needs

«Compulsory»

«Optimal»

«Minimal»


Topics





Schedule

Hazar mapping

Event register

2008/09 Data modelling2010 Implementation of data base2011 Data transfer

1st phase

Vulnerability

Protection work

2009/10 Data modelling2011 Implementation of data base2012 Data tranfer

2nd phase

Hazard map

Hazard index map

Intensity map

Protection goal map

Protection deficit map

Emergency map

…

Redesign von StorMe:Content / GIS-Functions/ …

Vulnerability

Protection work

Event register

Hazardmapping

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1

Time

Eff

ort


Thank you for your attention !

federal department of the environment, transport, energy and communications detec federal office for...

Documents

flood data brussels

flood control

flood protection structures

data aggregation

swiss flood information

fundamental data aquaprotect

nd expert meeting

switzerland databases