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10. Appendix C Flood Inventory Report TA1112733 page 174
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 1 001 Waterford River Basin 1950 10 31 1950 11 1 2 Fall Eastern 4400 St. John's Waterford River Rainfall 77 Over 77mm of rainfall in 2 days led to general overbank flooding, particularly in Bowering Park Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 2 002 Torbay, Waterford River Basin 1951 4 10 1951 4 12 3 Spring Eastern 5125 Torbay Waterford River / Rennie's River / Quidi Vidi River Rainfall 170 MR: Heavy rainfall raised local lakes to remarkably high elevations. City streets were washed out, houses flooded and blocked traffic MR: Flood Risk Mapping Study of Goulds, Petty Harbour and Ferryland, Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 3 002 Torbay, Waterford River Basin 1951 4 10 1951 4 13 3 Spring Eastern 4400 St. John's Waterford River / Rennie's River / Quidi Vidi River Rainfall 170 MR: Heavy rainfall raised local lakes to remarkably high elevations. City streets were washed out, houses flooded and blocked traffic MR: Flood Risk Mapping Study of Goulds, Petty Harbour and Ferryland, Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 4 003 Waterford River Basin 1951 11 4 1951 11 5 1 Fall Eastern 4400 St. John's Waterford River Flash Flood 44 Some sections of the city were inundated as a result of blocked storm drains and culverts. Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 5 004 Waterford River Basin 1951 11 30 1951 12 1 1 Fall Eastern 4400 St. John's Waterford River Rainfall 73 Rainfall over a 2 day period caused flooding at St. John's Bridge and Waterford Bridge Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 6 005 Stephenville Crossing 1951 12 18 1951 12 19 1 Fall Western 4950 Stephenville Crossing Coastal Flooding 600 MR: Storm washed out rail bed and 15 telephone poles blown down. Streets were flooded and there was interior damages to several homes. Damage was also reported at Summerside, Bay of Islands and many fisherman lost boats and gear. MR: Flooding Events in Newfoundland and Labrador - An Historical Perspective. Heritage Newfoundland Website, Department of Natural Resources Website 307 AMEC 7 005 Stephenville Crossing 1951 12 18 1951 12 19 1 Fall Western 4985 Summerside Coastal Flooding 600 MR: Storm washed out rail bed and 15 telephone poles blown down. Streets were flooded and there was interior damages to several homes. Damage was also reported at Summerside, Bay of Islands and many fisherman lost boats and gear. MR: Flooding Events in Newfoundland and Labrador - An Historical Perspective. Heritage Newfoundland Website, Department of Natural Resources Website 307 AMEC 8 006 St. John's 1952 2 6 1952 2 7 1 Winter Eastern 4400 St. John's Rainfall 32.8 Torrential rains and inadequate storm sewers caused flooding problems Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 9 007 West Coast 1952 2 28 1952 2 29 1 Winter Western 1025 Port aux Basques Rainfall A washout around the Port aux Basque area halted trains Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 10 008 Burin Peninsula 1952 11 5 1952 11 6 1 Fall Eastern Allan's Island Coastal Flooding MR: The approaches to a bridge at Allan's Island were washed out. A small bridge was washed inland about 100 ft Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 11 008 Burin Peninsula 1952 11 5 1952 11 6 1 Fall Eastern 1545 Epworth Coastal Flooding 12 009 St. John's 1953 10 6 1953 10 7 1 Fall Eastern 4400 St. John's Rainfall 111 13 010 St. John's 1953 12 26 1953 12 27 1 Winter Eastern 4400 St. John's Rainfall 85.1 MR: The approaches to a bridge at Allan's Island were washed out. A small bridge was washed inland about 100 ft Heavy rainfall in one day filled Southside Hills gullies but only caused minor problems Rainfall caused destruction of Steady Waters Bridge, washouts at, Mundy Pond brook overflowed flooding Victoria Park Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC Waterford River Area - Hydro technical Study, Dept of Natural Resources Website 303 AMEC Waterford River Area - Hydro technical Study No AMEC 14 011 St. John's 1954 3 10 1954 3 11 1 Winter Eastern 4400 St. John's Long Pond / Rennie's River Rainfall 80 Many basements flooded and some city streets were turned into rivers Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC 15 012 St. John's 1954 12 7 1954 12 8 1 Fall Eastern 4400 St. John's Rainfall 28.4 16 013 Corner Brook 1954 12 20 1954 12 N/A 1 Winter Western 1200 Corner Brook Rainfall 65.8 17 014 East Coast, St. John's and Carbonear 1955 1 10 1955 1 10 1 Winter Eastern 4400 St. John's Coastal Flooding $12,000 Heavy rains sent water cascading down the Southside Hills flooding basements and some residents were temporarily out of their homes Street flooded and 12 basements reported flooding. MR: The "worst storm in memory" battered the East Coast. Surging waves sent water 200 feet in the air against the steep cliffs around St. John's Harbour. 12 wharves and two small boats were destroyed. General damages were said to be extensive Flooding Events in Newfoundland and Labrador - An Historical Perspective No AMEC Department of Natural Resources Website 13 AMEC MR: Department of Natural Resources Website, The Daily News| 14 AMEC Page 1
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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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Page 155 and 156: Community Access Notes Confinement
Page 157 and 158: Brook and Deer Lake are both locate
Page 159 and 160: Warning Systems 1. It is recommende
Page 161 and 162: source of flood vulnerabilities com
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
Page 185 and 186: TA1112733 page 155
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
Page 197 and 198: TA1112733 page 167
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 207 and 208: Flood # Storm # General Location St
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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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