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

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Weighting Description 0 Relatively few resources at risk 1 Moderately low amount of resources at risk to flood damage 2 Moderately high amount of resources at risk to flood damage 3 Relatively large populations and/or critical infrastructure located in flood zone with a history of costly flood damages Table 5-9. Vulnerability to Direct Impact to Flooding Weighting 5.5.4 Community Vulnerability to Indirect Flooding Impacts or Isolation Communities were ranked based on physical confinement (as determined by the DEM) and the presence or absence of access routes into and out of the community noted (Table 5-10). Community Access Notes Confinement Isolation Report Ranking Badger Multiple access routes all cross waterways near town Unconfined No 1 Belleoram Isolated, coastal town; roads along coast High No 3 Carbonear Coastal valley with many access routes Low No 1 Codroy Valley River crosses main access road in several locations Moderate Yes 3 Cold Brook River crosses access road in several locations Moderate Yes 3 Corner Brook Several other rivers flow into area, main access roads cross rivers; few options Moderate Yes 2 Daniel’s Harbour Coastal town with main n-s road, but appear to be alternative access options Unconfined No 1 Deer Lake Many roads, but many cut by streams Low No 1 Ferryland Several access routes; only n-s roads along coast Low No 2 Gambo Several access routes along coast and upland; water a factor with each route Unconfined No 0 Gander Many roads along Gander River, into upland Unconfined No 0 Grand Bank Main coastal road cut by waterways in both directions; no upland options Moderate No 3 Grand Falls Many alternatives, several cut by rivers, especially on south side of Exploits Unconfined No 1 Goulds No access issues Unconfined No 0 Hermitage- Singular highway located on peninsula high Sandyville point; crosses many water bodies Confined No 3 King's Point Few access roads cross small streams Low Yes 2 Petty-Harbour/ Maddox Cove Few access routes; small stream crossing Moderate No 1 Marystown Many roads but most in low-lying areas or Low Yes 3 TA1112733 page 124
Community Access Notes Confinement Isolation Report Ranking cross rivers Middle Arm Small coastal town; limited access all along water Moderate No 2 Mount Pearl Many options Unconfined No 0 New-wes-valley Coastal access ways; few low spots Low Yes 2 Placentia Access roads cut by rivers, cutting off access to hospital Moderate No 3 Port Blandford Several access options Low Yes 2 Rocky Harbour Few access options crossing several low spots and streams Confined No 3 Rushoon Singular access cut by river Confined No 3 St. John's Many access options Low Yes 2 Steady Brook Alternative access crosses stream Confined No 3 Stephenville Many road options, many cross water Low No 1 Table 5-10. Ranking for vulnerability to indirect effects of flooding It was also noted whether or not roads crossed streams or other water bodies. Potential isolation results in an increase to a community‟s vulnerability ranking. The rankings were defined as follows: Weighting Description 0 Relatively unconfined with multiple access options 1 Moderately low confinement with access options 2 Moderately high confinement or limited access options 3 Confined communities with exposed access option(s) Table 5-11. Vulnerability to Indirect Flooding Impact Weighting 5.6 Results of Assessment and Conclusion The physical hazard, direct vulnerability, and indirect vulnerability rankings are presented in Table 5-12. These relative rankings can then be used to group communities into priority levels, based on how the community ranked in each category. This is represented by the color coding provided in the community column of Table 5-12 and Figure 5-6. TA1112733 page 125
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Atlantic Climate Adaptation Solutio
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GOVERNMENT OF NEWFOUNDLAND AND LABR
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June 13, 2012 AMEC Project #TA11127
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EXECUTIVE SUMMARY The Government of
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Assessing the Need for New or Updat
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SUMMARY The Government of Newfoundl
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Land Use Change A pre-cursor effort
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fresh water from the Arctic south a
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watershed, which appears to already
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RECOMMENDATION SUMMARY Infrastructu
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7. It is recommended that WRMD deve
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TABLE OF CONTENTS PAGE EXECUTIVE SU
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7.3 References for Assess Need for
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LIST OF TABLES Table 2-1. Flood Eve
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LIST OF FIGURES Figure 2-1. Water R
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1. OVERVIEW In the 1980‟s, under
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Floodway Floodway Fringe Climate Ch
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2. Task B - Updated Flood Events In
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Management Framework for Canada def
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The „Types of Events‟ field is
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Field Damage Estimate by Community
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Arrangements 10 (DFAA) damage estim
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Storm # General Location Year Seaso
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2.3.2 Weather Events - Annual Occur
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Figure 2-6. Storm Occurrence by Yea
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Figure 2-8. Storm Occurrence by Mon
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Type of Event (Grouped) % Occurrenc
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Figure 2-11. Flood Occurrence by Se
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Coastal Flooding Coastal Flooding a
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September is associated, presently,
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3. Task C - Assess Existing Flood R
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Gaudon‟s Brook / Cold Brook Steph
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3.3.2.1 Community Flood Watersheds
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3.3.2.3 Earth Observation for Susta
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Figure 3-3. Graphical model of land
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Original EOSD Classes Shadow Water
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surrounding areas were also evaluat
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Watershed Community Total Area Fore
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correct). Of the 90 accuracy assess
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Figure 3-6. GCM sectors selected to
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Figure 3-7. Percentage change of pr
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The results for temperature are sim
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Area Labrador West Central East Sum
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West sees slightly larger winter in
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These increases, though slight, in
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Classification Maximum Sustained Su
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Since air flow around high pressure
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10 9 8 7 6 Total Number of Tropical
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One of the reasons for this increas
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Figure 3-19. Frequency of Named Sto
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Figure 3-21. Change in Mean Sea Lev
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Page 119 and 120: o Because winter temperatures show
Page 121 and 122: Worst Case Scenarios This section
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Page 127 and 128: WRMD has defined a preference for h
Page 129 and 130: The hydrographic network was used t
Page 131 and 132: 4.1.8 Flood History Identification
Page 133 and 134: Watershed Slope The slope attribute
Page 135 and 136: such as number of flood events at a
Page 137 and 138: Deer Lake Placentia Codroy Steady B
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Page 141 and 142: 5.2 Methods The methodology used fo
Page 143 and 144: Reported Event Damages Storm# Locat
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Page 147 and 148: Figure 5-3. Storm tracks for select
Page 149 and 150: natural constrictions. The number a
Page 151 and 152: 5.5.2 Community Exposure to Physica
Page 153: Community Number of Events 2011 Pop
Page 157 and 158: Brook and Deer Lake are both locate
Page 159 and 160: Warning Systems 1. It is recommende
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Page 163 and 164: Figure 6-2. Newfoundland Digital El
Page 165 and 166: communities ( Gillams, Hughes Brook
Page 167 and 168: Sub-region Precipitation Climate Ch
Page 169 and 170: Analysis of the socio-economic data
Page 171 and 172: East-2 Coastal communities line nea
Page 173 and 174: 6.2.2 Potential Strategies Table 6-
Page 175 and 176: 6.3 Mitigation Recommendations Base
Page 177 and 178: Table 6-5 presents the range of ave
Page 179 and 180: West-3, West-4, and Central-3 These
Page 181 and 182: Mitigation Strategy Cost to Impleme
Page 183 and 184: Sub-region Watershed Characteristic
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Page 187 and 188: Music and Caya, 2007 Richter and Ba
Page 189 and 190: http://www.arcgis.com/home/item.htm
Page 191 and 192: Rank Community Name LGP# 82 Massey
Page 193 and 194: Rank Community Name LGP# 252 Little
Page 195 and 196: Rank Community Name LGP# 423 Thornl
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Page 199 and 200: FOX ISLAND RIVER-POINT GALLANTS GEO
Page 201 and 202: GEORGE'S BROOK-MILTON GOOBIES GRAND
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Flood # Storm # General Location St
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11. Appendix D IDF Curves Report TA
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Development of Projected Intensity-
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Storm Duration Development of Proje
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1979 1983 1987 1991 1995 1999 2003
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Mean Annual Total Precipoitation, m
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Storm Duration Storm Duration Devel
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Storm Duration Storm Duration Storm
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Codroy Valley Watershed Topography
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Parson's Pond Watershed Topography
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Rushoon Watershed: Topography Eleva
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Eastern Watersheds, East Topography
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Eastern 54°0'0"Watersheds, West To
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Central Watersheds, 57°0'0"W East
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Central 58°0'0"W and Western Water
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Badger and Rushy 58°0'0"W Pond Wat
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Cox's Cove Watershed: Land Cover 58
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Ferryland Watershed Land Cover 60°
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49°0'0"N Glenwood-Appleton 56°0'0
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Parson's Pond Watershed: Land Cover
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Rushy Pond Watershed: 57°0'0"WLand
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Stephenville Crossing Watershed: La
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Whitbourne and Brigus Watersheds: L
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Eastern Watersheds 2: Land Cover Ha
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Eastern Watersheds, East: Land Cove
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