Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK,...
-
Upload
marian-mckinney -
Category
Documents
-
view
215 -
download
0
Transcript of Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK,...
![Page 1: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/1.jpg)
Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of IrelandMichele Seib, PE, CFMNeil Breton, Chartered Hydrologist
![Page 2: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/2.jpg)
Overview• Introduction• Gathering & Analyzing Flood Data• Mapping Flood Risk• Using the Flood Data• Conclusions
![Page 3: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/3.jpg)
Overview• Introduction• Gathering & Analyzing Flood Data• Mapping Flood Risk• Using the Flood Data• Conclusions
![Page 4: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/4.jpg)
IntroductionUS
Longest River 4,543 miles
UK Longest River 220 miles
Ireland Longest River 240 miles
![Page 5: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/5.jpg)
Introduction
US
UK
Ireland
NFIP
EU Directive 2007/60/EU
![Page 6: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/6.jpg)
Overview• Introduction• Gathering & Analyzing Flood Data• Mapping Flood Risk• Using the Flood Data• Conclusions
![Page 7: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/7.jpg)
Gathering & Analyzing Flood DataDetermining Drainage Areas
US UK Ireland
• Delineated for EACH study
• Use best available topography
• Drainage Areas pre-defined by catchment descriptors
• Standard Approach Datasets
![Page 8: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/8.jpg)
Gathering & Analyzing Flood DataHydrology
US UK Ireland
• Regression• Gages• Rainfall Runoff• Other FEMA
approved models
• FEH rainfall-runoff• FEH Hydrographs• IOH124 for urban
locations• Rational/Wallingford
• FSR• FSU
![Page 9: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/9.jpg)
Gathering & Analyzing Flood DataHydraulics
US UK Ireland
• HEC-RAS• 2-D Models• Other FEMA
approved models
• 1-D• 2-D
• 1-D• 2-D
![Page 10: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/10.jpg)
Gathering & Analyzing Flood DataStructures
![Page 11: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/11.jpg)
Overview• Introduction• Gathering & Analyzing Flood Data• Mapping Flood Risk• Using the Flood Data• Conclusions
![Page 12: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/12.jpg)
Mapping Flood Risk
FIRM & FIS
SFRM & SFRA
CFRAM
![Page 13: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/13.jpg)
Mapping Flood Risk
FIRM & FIS
![Page 14: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/14.jpg)
Mapping Flood Risk
SFRM & SFRA
![Page 15: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/15.jpg)
Mapping Flood Risk
CFRAM
![Page 16: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/16.jpg)
Overview• Introduction• Gathering & Analyzing Flood Data• Mapping Flood Risk• Using the Flood Data• Conclusions
![Page 17: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/17.jpg)
Using the Flood Data
Mitigation Insurance
Land Use Planning
Development
Flood Defense Structures
![Page 18: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/18.jpg)
Overview• Introduction• Gathering & Analyzing Flood Data• Mapping Flood Risk• Using the Flood Data• Conclusions
![Page 19: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/19.jpg)
Conclusions• Combining different sources of risk assessment (such as
in the UK) provides a holistic overview of all flood sources
• Revising entire maps/products (as in the US) provides a singular, definitive flood outline incorporating all changes and modifications
• Uncertainty maps highlight areas where flooding is still a risk for a particular event
![Page 20: Flood Mapping Across the Pond: A Comparison of Programs and Technical Requirements The US, the UK, and the Republic of Ireland Michele Seib, PE, CFM Neil.](https://reader033.fdocuments.us/reader033/viewer/2022052603/56649f4f5503460f94c71341/html5/thumbnails/20.jpg)
Michele Seib
Neil Breton