1. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Hands on training on locating buildings vulnerable to flood damage Dr. A.K.M. Saiful Islam Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET)

2. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Introduction to Surface hydrology procedures This training will be on: 1.Introduction to Spatial Analysis 2.Flood Zone statistics of the area 3.Flood Zone Analysis and find wet Homes

3. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam 1. Introduction of Spatial Analyst First load the Spatial Analyst –click on Tools > Extension –Check the box left to Spatial Analyst

4. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam 2. Flood Zone Satistics Given data: –Flood Zone Map –Landuse data of a city Problem: – Insurance company and city planners wants to locate buildings and other assets susceptible to flood damage by examining flood zone areas.

5. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Add land use Map

6. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Add Flood Map Flood raster map Flood map on top of landuse map

7. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Change Symobology of landuse map Double click on landuse map Click on Symbology tab Select unique values Scroll value fields as Landue type2 Click Add All Values

8. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Landuse map with landuse type

9. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Zonal Statistics

10. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Flood Zone Statistics

11. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Use the chart to answer these questions What are the land use types in the flood zone? _________________ Which one has the greatest area in the flood zone? _________________ Which zoning type is most likely to contain homes? _________________

12. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam 3. Flood zone analysis to find wet homes Create a chart which will serve as a planning tool to identify data used or created and record each task to be performed. LanduseResidential Flood Wet Home Map Query

13. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Find residential zone Residential area has zone value = 3

14. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Find only residential area Type [landuse] == 3 Click Evaluate will create map of residential area and rename it as “Residential”

15. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Flood Zone Analysis Execute following Query using Raster calculator [flood] & [Residential] Click on Evaluate. It will create wet homes map. Rename the raster map as “Wet Homes”

16. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Map of Residential Area

17. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Wet Homes

18. Concept Course on Spatial Analyst @ Dr. A.K.M. Saiful Islam Conclusion The wet homes contains residential areas inside the flood zone. These parcels could be targeted for flood insurance. City planners could also use this information for disaster planning services.