Flood Risk and Vulnerability Analysis Project - Atlantic Climate ...

4.1.2 Topographic Map Base ........................................................................................ 95
4.1.3 Analytical Methods ............................................................................................... 95
4.1.4 Software ............................................................................................................... 96
4.1.5 Climate Change ................................................................................................... 97
4.1.6 Community Location and Linkage with Other Datasets ....................................... 98
4.1.7 Population .......................................................................................................... 100
4.1.8 Flood History ...................................................................................................... 101
4.1.9 Flood Damages Estimates ................................................................................. 101
4.1.10 Watershed Runoff Potential ............................................................................... 101
4.1.11 Watercourse Hydraulics ..................................................................................... 103
4.2 Prioritization Analysis ...................................................................................................... 104
4.3 Recommendations for Assessing the Need for New / Updated Flood Risk
Mapping .......................................................................................................................... 108
5. TASK E – ASSESS NEED FOR FLOOD FORECASTING / FLOOD WARNING SYSTEM ...... 110
5.1 Data Sources .................................................................................................................. 110
5.2 Methods .......................................................................................................................... 111
5.3 Identify key communities from the Flood Events Inventory ............................................ 111
5.4 Review and Assess Physical Hazard.............................................................................. 113
5.4.1 Community Vulnerability to Direct Impacts of Flooding ..................................... 117
5.4.2 Community Vulnerability to Indirect Flooding Impacts and Isolation ................. 118
5.5 Results ............................................................................................................................ 120
5.5.1 Identified key communities ................................................................................. 120
5.5.2 Community Exposure to Physical Hazard ......................................................... 121
5.5.3 Community Vulnerability to Direct Impacts of Flooding ..................................... 122
5.5.4 Community Vulnerability to Indirect Flooding Impacts or Isolation .................... 124
5.6 Results of Assessment and Conclusion.......................................................................... 125
5.7 Recommendations for Assessing the Need for Flood Forecasting / Flood
Warning Systems ............................................................................................................ 128
6. TASK F – IDENTIFY FLOOD VULNERABILITY MITIGATION AND ADAPTATION
STRATEGIES .............................................................................................................................. 130
6.1 Community Analysis........................................................................................................ 130
6.1.1 Newfoundland Regions and Sub-regions .......................................................... 131
6.1.2 General Characterizations of Sub-regions ......................................................... 134
6.1.3 Summary of Sub-region Characteristics ............................................................ 139
6.2 Mitigation Strategies........................................................................................................ 141
6.2.1 Structural and Non-Structural Strategies ........................................................... 142
6.2.2 Potential Strategies ............................................................................................ 143
6.3 Mitigation Recommendations .......................................................................................... 145
6.3.1 Strategies Applicable to All Communities .......................................................... 145
6.3.2 Property Acquisition ........................................................................................... 146
6.3.3 Strategies Applicable to Specific Sub-regions ................................................... 147
6.3.4 Mitigation Strategy Cost and Potential Benefits ................................................. 150
6.3.5 Sub-regions Prioritization Considerations .......................................................... 152
6.4 Recommendations .......................................................................................................... 154
7. REFERENCES ............................................................................................................................. 156
7.1 Flood Events Inventory References ................................................................................ 156
7.2 Climate Change References ........................................................................................... 156
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