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

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Flood # Storm # General Location Start Year Start Month Start Day Start Time End Year End Month End Day End Time Duration (days) Season Region LGP# Community Name Water Bodies Type of Event Rainfall Amount Snowfall amount Sea Height Jam Height Damage Estimate by Community (if known) Damage Estimate by Storm (once per storm) DFAA Damage Report DFAA Damage Report (once per storm) Homes Flooded People Displaced Attachment Number Data Added By Flood Inventory Database 1950 - Present Description Source 166 101 Avalon Peninsula 1979 1 28 1979 1 30 6 Winter Eastern 2790 Little Bay Rainfall MR: City crews were busy cleaning up flooded sewers and basements, entrance to The Health Sciences Centre was flooded by a nearby pond. Ice backed up water inundating the road between Robinsons and Cartyville with about 12 inches of water. A section of the Cabot Highway near Catalina was under 6 inches of water but remained passable. A stream overflowed its banks and 4 families were forced to leave their homes. Extensive damages to roads in Marystown. Extensive damages to roads, 1 family had to evacuate because of rising water in main area of their home. MR: Flood Risk Mapping Study of Gould's, Petty Harbour and Ferryland. Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 167 102 Stephenville, Corner Brook, Roddickton 1979 3 6 1979 3 9 3 Winter Western 4945 Stephenville Blanche Brook Rainfall and Snowmelt 64 $120,000 MR: 80ft section of retaining wall felled by high flows and ice. Some basement flooding and minor road damages was reported throughout the city. Blocked culverts and ditches caused some flooding in the roads MR: Flood Risk Mapping Study of Stephenville, Kippens and Cold Brook. Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 168 102 Stephenville, Corner Brook, Roddickton 1979 3 6 1979 3 9 3 Winter Western 1200 Corner Brook Rainfall and Snowmelt 64 $120,000 $120,000 MR: 80ft section of retaining wall felled by high flows and ice. Some basement flooding and minor road damages was reported throughout the city. Blocked culverts and ditches caused some flooding in the roads MR: Flood Risk Mapping Study of Stephenville, Kippens and Cold Brook. Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 169 102 Stephenville, Corner Brook, Roddickton 1979 3 6 1979 3 9 3 Winter Western 4250 Roddickton 170 103 Stephenville 1979 7 17 1979 7 20 3 Summer Western 4945 Stephenville Blanche Brook Rainfall 42.2 171 104 Bishops Falls 1979 8 17 1979 8 18 1 Summer Central 405 Bishops Falls Rainfall Rainfall and Snowmelt 64 $120,000 MR: 80ft section of retaining wall felled by high flows and ice. Some basement flooding and minor road damages was reported throughout the city. Blocked culverts and ditches caused some flooding in the roads Hansen Hwy bridge jammed with debris, there was also some basement flooding A river flowing through the town overflowed causing considerable damage to dwellings, the towns bridge, culverts, the towns street was also washed out. MR: Flood Risk Mapping Study of Stephenville, Kippens and Cold Brook. Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC Flood Risk Mapping Study of Stephenville, Kippens and Cold Brook No AMEC Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 172 105 Burin Peninsula 1979 11 10 1979 11 12 3 Fall Eastern 2790 Little Bay unknown 1 One family had to evacuate, water began to rise to the main floor of their home. Flooding Events in Newfoundland and Labrador - An Historical Perspective, Dept of Natural Resources Website 293 AMEC 173 106 Portland Creek, Hawke's Bay, Corner Brook 1979 11 4 1979 11 7 4 Fall Eastern 3995 Portland Creek Rainfall 91 MR: Section of highway under 0.5m of water. Flooding and rockslides reported at several locations. MR: Flooding Events in Newfoundland and Labrador - An Historical Perspective. Hydro technical Study of the Steady Brook Area No AMEC 174 106 Portland Creek, Hawke's Bay, Corner Brook 1979 11 4 1979 11 7 4 Fall Eastern 2205 Hawke's Bay Big East River Rainfall 91 MR: Section of highway under 0.5m of water. Flooding and rockslides reported at several locations. MR: Flooding Events in Newfoundland and Labrador - An Historical Perspective. Hydro technical Study of the Steady Brook Area No AMEC 175 106 Portland Creek, Hawke's Bay, Corner Brook 1979 11 4 1979 11 7 4 Fall Western 1200 Corner Brook Rainfall 176 107 Corner Brook 1980 8 10 1980 8 11 1 Summer Western 1200 Corner Brook Rainfall 1 family 177 108 St. John's 1980 11 N/A 1980 11 N/A N/A Fall Eastern 4400 St. John's Snowmelt MR: Section of highway under 0.5m of water. Flooding and rockslides reported at several locations. Minimal damage to city streets. One family forced to vacate basement apartment Unconfirmed reporting of flooding in Bowering Park 178 109 Corner Brook 1981 2 3 1981 2 4 1 Winter Western 1200 Corner Brook Rainfall 20-25 washouts reported Ice Jams caused flooding to 2 nearby homes and 179 110 Codroy Valley 1981 2 5 1981 2 7 2 Winter Western 1105 Codroy Valley Ice Jam surrounding farmland 180 111 Corner Brook 1981 2 12 1981 2 13 1 Winter Western 1200 Corner Brook Rainfall Minor Flooding reported in Corner Brook Serious flooding of south shore of Deer Lake and 181 112 Deer Lake 1981 5 4 1981 5 16 12 Spring Western 1380 Deer Lake Rainfall Nicholsville reported 121mm of rain over 2.5 days resulted in serious flooding in the Southside Hills area and Mundy 182 113 Avalon Peninsula 1981 10 10 1981 10 11 1 Fall Eastern 4400 St. John's Rainfall 121 Pond area MR: Flooding Events in Newfoundland and Labrador - An Historical Perspective. Hydro technical Study of the Steady Brook Area No AMEC Hydro technical Study of the Steady Brook Area No AMEC Waterford River Area - Hydro technical Study No AMEC Hydro technical Study of Steady Brook Area No AMEC Flood Risk Mapping Study of the Codroy Valley Area No AMEC Hydro technical Study of the Steady Brook Area No AMEC Hydro technical Study of the Deer Lake Area No AMEC Flood Risk Mapping Study of Gould's, Petty Harbour and Ferryland No AMEC Page 14
Flood # Storm # General Location Start Year Start Month Start Day Start Time End Year End Month End Day End Time Duration (days) Season Region LGP# Community Name Water Bodies Type of Event Rainfall Amount Snowfall amount Sea Height Jam Height Damage Estimate by Community (if known) Damage Estimate by Storm (once per storm) DFAA Damage Report DFAA Damage Report (once per storm) Homes Flooded People Displaced Attachment Number Data Added By Flood Inventory Database 1950 - Present 183 114 Avalon Peninsula 1981 11 26 1981 11 26 1 Fall Eastern 4400 St. John's 184 115 Placentia 1982 1 10 10:00 1982 1 10 13:00 1 Winter Eastern 3800 Placentia 185 116 Placentia 1982 1 16 1982 1 16 1 Winter Eastern 3800 Placentia Waterford River Rainfall 76 Coastal Flooding 186 117 Stephenville 1982 4 N/A 1982 4 N/A N/A Spring Western 3485 Noel's Pond Warm Creek unknown 187 118 Steady Brook 1982 5 4 1982 5 10 6 Spring Western 4935 Steady Brook Rainfall 188 119 St. John's 1982 10 3 1982 10 5 1 Fall Eastern 4400 St. John's Rainfall 100 Coastal Flooding $300,000 $300,000 Description Heavy rain in one day caused overbank flooding in a number of areas around St. John's (Southside Road) Source Flood Risk Mapping Study of Gould's, Petty Harbour and Ferryland No AMEC Worst flooding in history of community. Houses flooded, people forced to row along road in dories. Unusually high tides flooded houses in St. Heritage Newfoundland M Website No AMEC Waves broke through the beach and washed across the road in the area of the high school. The water flooded some areas that were still Hydro technical Study of the under water from the flood a week earlier Placentia Area Flood Plain No AMEC Flood Risk Mapping Study Extensive basement flooding in community of of Stephenville, Kippens and Noel's Pond Cold Brook No AMEC Some property damage reported in the Hydro technical Study of the community of Steady Brook Steady Brook Area No AMEC Over 100mm of rain fell in one day during a severe storm but little or no flooding recorded Waterford River Area - Hydro technical Study No AMEC 189 120 190 121 191 121 192 121 193 121 Glenwood- Appleton 1983 1 1 1983 1 14 13 Winter Central 85 Glenwood- Appleton Gander River Rainfall Bishops Falls, Stephenville, Deer Lake 1983 1 11 1983 1 19 8 Winter Central 405 Bishops Falls Exploits River Rainfall 200 $34,000,000 $34,000,000 180 Bishops Falls, Stephenville, Deer Lake 1983 1 11 1983 1 19 8 Winter Central Central Rainfall 189 $34,000,000 Bishops Falls, Stephenville, Deer Lake 1983 1 11 1983 1 19 8 Winter Western 4945 Stephenville Rainfall 189 $34,000,000 Bishops Falls, Stephenville, Deer Lake 1983 1 11 1983 1 19 8 Winter Western 1380 Deer Lake Rainfall and Snowmelt 189 $34,000,000 194 122 Badger 1983 2 15 1983 2 17 3 Winter Central 155 Badger Exploits River Ice Jam $89,000 $89,000 195 123 Rushoon 1983 3 3 18:30 1983 3 8 20:30 5 Winter Eastern 4295 Rushoon Ice Jam $25,000 $25,000 8 Rainfall and 196 124 Deer Lake 1983 4 20 1983 4 20 1 Spring Western 1380 Deer Lake Humber River Snowmelt Water from the Gander River flooded the communities to a depth of 2m, marooning houses, cars boats, etc 40 basements were flooded and 12 families were forced to evacuate. MR: Heavy rain and mild temperatures caused damages along the Exploits and Gander Rivers, the Conne River and Stephenville. Caused damages to homes and roads. The exploits river flooded its banks after 10inch rainfall. Transportation routes affected in the South Brook area. In January heavy rains combined with snow melt caused Blanche Brook and Warm Creek to burst their banks. Glenwood-Appleton Flood Study Report No AMEC MR: Environment Canada. Heritage Newfoundland Website. Hydro technical Study of the Deer Lake Area. Stephenville Flood Information map, Department of the Environment, Water Resources Division 121, 121b AMEC MR: Heavy rain and mild temperatures caused damages along the Exploits and Gander Rivers, the Conne River and Stephenville. Caused damages to homes and roads. The exploits river flooded its banks after 10inch rainfall. MR: Environment Canada. Heritage Newfoundland Website. Hydro technical Study of the Deer Lake Area. Stephenville Flood Transportation routes affected in the South Brook Information map, area. In January heavy rains combined with snow melt caused Blanche Brook and Warm Creek to burst their banks. Department of the Environment, Water Resources Division 284 AMEC MR: Heavy rain and mild temperatures caused MR: Environment Canada. damages along the Exploits and Gander Rivers, Heritage Newfoundland the Conne River and Stephenville. Caused Website. Hydro technical damages to homes and roads. The exploits river Study of the Deer Lake flooded its banks after 10inch rainfall. Area. Stephenville Flood Transportation routes affected in the South Brook Information map, area. In January heavy rains combined with Department of the snow melt caused Blanche Brook and Warm Environment, Water Creek to burst their banks. Resources Division 284 AMEC MR: Heavy rain and mild temperatures caused damages along the Exploits and Gander Rivers, the Conne River and Stephenville. Caused damages to homes and roads. The exploits river flooded its banks after 10inch rainfall. Transportation routes affected in the South Brook area. In January heavy rains combined with snow melt caused Blanche Brook and Warm Creek to burst their banks. Several homes were evacuated, 40 affected by flooding Eight houses were flooded. Seven families were evacuated for 3 days Minor flooding was reported along the Humber River downstream of Deer Lake 197 125 Stephenville 1983 6 N/A 1983 6 N/A N/A Summer Western 3485 Noel's Pond Warm Creek Minor basement flooding 198 126 Stephenville, Deer Lake 1983 8 7 1983 8 13 6 Summer Western 4945 Stephenville Rainfall $100,000 MR: Many properties were noted to be partially under water along Steady Brook and the Humber River. Flooding on Deer Lake caused the abandonment of some municipal parks. Heavy rainfall resulted in flooding described as the worst in the town's history. $100,000 of damage was reported. MR: Environment Canada. Heritage Newfoundland Website. Hydro technical Study of the Deer Lake Area. Stephenville Flood Information map, Department of the Environment, Water Resources Division 284 AMEC Hydro technical Study of the Badger and Rushy Pond Area, Department of the Environment, Water Resources Division 276 AMEC Rushoon Flood Study Report, Dept of Natural Resources Website 301 AMEC Hydro technical Study of the Deer Lake Area No AMEC Flood Risk Mapping Study of Stephenville, Kippens and Cold Brook No AMEC MR: Hydro technical Study of the Deer Lake Area. Stephenville Flood Information map, Department of the Environment, Water Resources Division, Department of Natural Resources Website. 306 AMEC Page 15
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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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The net long term sea level effect
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Southern Oscillation (ENSO). The AM
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middle of North America as it would
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e a higher incidence of tropical st
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extreme will be considered. Areas t
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Storms weaken rapidly once they mak
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Figure 3-27. Selected Hurricane and
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o o a Category 2 Hurricane making l
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o Because winter temperatures show
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Worst Case Scenarios This section
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5. A hurricane making landfall on t
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Standards Association 21 recommends
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WRMD has defined a preference for h
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The hydrographic network was used t
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4.1.8 Flood History Identification
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Watershed Slope The slope attribute
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such as number of flood events at a
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Deer Lake Placentia Codroy Steady B
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TA1112733 page 109
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5.2 Methods The methodology used fo
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Reported Event Damages Storm# Locat
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Given the reported damages resultin
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Figure 5-3. Storm tracks for select
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natural constrictions. The number a
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5.5.2 Community Exposure to Physica
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Community Number of Events 2011 Pop
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Community Access Notes Confinement
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Brook and Deer Lake are both locate
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Warning Systems 1. It is recommende
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source of flood vulnerabilities com
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Figure 6-2. Newfoundland Digital El
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communities ( Gillams, Hughes Brook
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Page 169 and 170: Analysis of the socio-economic data
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Page 173 and 174: 6.2.2 Potential Strategies Table 6-
Page 175 and 176: 6.3 Mitigation Recommendations Base
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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
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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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Page 205 and 206: Flood # Storm # General Location St
Page 217: Flood # Storm # General Location St
Page 253 and 254: 11. Appendix D IDF Curves Report TA
Page 255 and 256: Development of Projected Intensity-
Page 263 and 264: Storm Duration Development of Proje
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Development of Projected Intensity-
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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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