Mapping and Management System for Flood Risk Map China Institute of Water Resources and Hydropower Research (IWHR) Toronto, Canada, May 6-8, 2008 By Li Changzhi

Outline Background Framework Functions Remarks

I. BACKGROUND Why we develop this system?

Flood risk mapping and management is important and urgent, but …? I. Background Different type of data ArcGIS, AutoCAD, MapInfo, MapGIS… Different type of flood risk maps Flood risk map for river (includes city) Flood risk map for detention basin Flood risk map for reservoir Different base Economic Technical

Pilot sites Pangtoupao The Yangzte River Basin Linanyuan The Songliao River Basin ChaersenDanjiangkou Guanshan Harbin Chengdu Yiyang Lahai Jingjiang City River Reservoir Detention basin I. Background

Chaersen MapGIS(*.wat) Pangtoupao AutoCAD(*.dwg,*.dxf) Laihai AutoCAD(*.dwg,*.dxf) Harbin ArcGIS(*.shp) I. Background

II. FRAMEWORK How we develop this system?

Hierarchy of the platform 1234 By IP Address or Server Name II. Framework of the platform Common users Special users Map maker Guiding rule maker

Main info in a flood risk map General info China’s National Fundamental Geographic Info Structural measures info Reservoirs, levees/dikes, detention basins… Risk info Scope of flooding Depth of flooding Velocity of flooding Time of flood arrival Duration of flooding Risk-reduction info Various info for flood risk reduction II. Framework of the platform

Standardization Spatial data Attribute data Tables and their fields Styles of layers II. Framework of the platform

Component GIS Powerful data integration Flexible architecture Integrated assemblage Core of GIS General application software Special industrial software Internet-WEBGIS Development tool -- SuperMap GIS GIS Core Special development Application fields: land, military, water resources, environment …

III. FUNCTIONS What can we do using this system now?

Main function modulesSome special functionsAll maps browsingIn a detail map …

Integration of multi-sources data Vector data Raster data III. Functions of the system - Some special functions

Make a new flood risk map Name Type River/city Detention basin Reservoir Sub-Basin Administrative area Datasources Info type Fundamental Structural info Risk info Risk reduction Available layers Selected layers III. Functions of the system - Some special functions

In a detailed map display List of maps List of layers Legend III. Functions of the system - In a detail map

Show/hide layers Fundamental info layers Structural measure info layers Flood risk info layers Risk reduction info layers III. Functions of the system - In a detail map

Flood standard Flooded area Affected people Affected property, Cities, railways, highways, etc. III. Functions of the system - In a detail map

Evacuation way Shelter Water depth info III. Functions of the system - In a detail map Jiangwan town

Query the population and property in a flooded area Population Property Flooded area Exposures III. Functions of the system - In a detail map

Jingjiang Detention Basin Map of water depth Map of flood arrival time Map of flooding duration III. Functions of the system – Map view

Map of water depth Map of flow velocity Map of flood arrival time Danjiangkou Reservoir III. Functions of the system – Map view

Waterloging in Chengdu city III. Functions of the system – Map view

IV. REMARKS What we learned from this work?

Specification – the base Different management system – necessary User’s needs – the driving force Flood management Landuse planning Flood insurance Flood risk popularization and education Powerful GIS core – efficient tool SuperMap Objects, SuperMap iServer

Thanks for your any suggestions or comments! Speaker: Li Changzhi Tel: Affiliation:China Institute of Water Resources and Hydropower Research (IWHR)