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

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3. It is recommended that WRMD consider the addition of a data field to identify the watershed within which the community is located. 13 4. It is recommended that the WRMD give consideration to evolving the Flood Events Inventory software platform from Microsoft Excel © to a database platform such as Microsoft Access © . This would facilitate capture of additional flood related information from multiple sources, better data entry and management, in addition, to the ability for more efficient linking to other databases (such as the Local Government Profiles database) and GIS. 13 An initial effort towards this end has been substantially completed as a component of the Flood Risk Assessment (Task E) for this project. TA1112733 30
3. Task C – Assess Existing Flood Risk Maps The Flood Risk Mapping Studies / Public Information Maps page from the Department of Environment and Conservation website provides access to digital flood plain data for communities where floodplain mapping has been developed. Table 3-1 lists the communities for which flood plain data is available on WRMD‟s website and the available data formats. These communities were the focus of the project objectives related to flood risk map re-assessment. Five basic objectives were identified for this project task, namely: Preparation of GIS base maps for communities vulnerable to flooding identified in Table 3-1, Digitization of flood plain data for communities identified in Table 3-1, Delineation of community flood watersheds for those communities identified in Table 3-1, Land cover classification within community flood watersheds and comparison to earlier classifications, and, Determination, based on best available science, of the impact the changing climate will have on communities vulnerable to flooding. Badger Goulds Salmon Cove Bishops Falls Hant‟s Harbour Shoal Harbour / Hodges Cove Brigus Heart‟s Delight Steady Brook Carbonear Hickman‟s Harbour Stephenville Codroy Valley Outer Cove Stephenville Crossing / Black Duck Siding Cox‟s Cove Parson‟s Pond Trout River Deer Lake Petty Harbour Victoria Ferryland Placentia Waterford River Gaudon‟s Brook / Cold Brook Portugal Cove / St. Philips Whitbourne Glenwood / Appleton Rushoon Winterton Glovertown Rushy Pond Table 3-1. Communities for which Flood Mapping is Presently Available Please note for Task C the names used for communities and areas are a combination of those that were in place when the FRM studies were done in the 1980s and 1990s and those reflected by the new LGP numbers due to a need to use data from both old FRM studies and the LGP list. TA1112733 31
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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
Page 9 and 10: Assessing the Need for New or Updat
Page 11 and 12: SUMMARY The Government of Newfoundl
Page 13 and 14: Land Use Change A pre-cursor effort
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Page 19 and 20: RECOMMENDATION SUMMARY Infrastructu
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Page 23 and 24: TABLE OF CONTENTS PAGE EXECUTIVE SU
Page 25 and 26: 7.3 References for Assess Need for
Page 27 and 28: LIST OF TABLES Table 2-1. Flood Eve
Page 29 and 30: LIST OF FIGURES Figure 2-1. Water R
Page 31 and 32: 1. OVERVIEW In the 1980‟s, under
Page 33 and 34: Floodway Floodway Fringe Climate Ch
Page 35 and 36: 2. Task B - Updated Flood Events In
Page 37 and 38: Management Framework for Canada def
Page 39 and 40: The „Types of Events‟ field is
Page 41 and 42: Field Damage Estimate by Community
Page 43 and 44: Arrangements 10 (DFAA) damage estim
Page 45 and 46: Storm # General Location Year Seaso
Page 47 and 48: 2.3.2 Weather Events - Annual Occur
Page 49 and 50: Figure 2-6. Storm Occurrence by Yea
Page 51 and 52: Figure 2-8. Storm Occurrence by Mon
Page 53 and 54: Type of Event (Grouped) % Occurrenc
Page 55 and 56: Figure 2-11. Flood Occurrence by Se
Page 57 and 58: Coastal Flooding Coastal Flooding a
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Page 65 and 66: 3.3.2.1 Community Flood Watersheds
Page 67 and 68: 3.3.2.3 Earth Observation for Susta
Page 69 and 70: Figure 3-3. Graphical model of land
Page 71 and 72: Original EOSD Classes Shadow Water
Page 73 and 74: surrounding areas were also evaluat
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Page 77 and 78: correct). Of the 90 accuracy assess
Page 79 and 80: Figure 3-6. GCM sectors selected to
Page 81 and 82: Figure 3-7. Percentage change of pr
Page 83 and 84: The results for temperature are sim
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Page 89 and 90: These increases, though slight, in
Page 91 and 92: Classification Maximum Sustained Su
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Page 101 and 102: Figure 3-21. Change in Mean Sea Lev
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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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Sub-region Precipitation Climate Ch
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Analysis of the socio-economic data
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East-2 Coastal communities line nea
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6.2.2 Potential Strategies Table 6-
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6.3 Mitigation Recommendations Base
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Table 6-5 presents the range of ave
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West-3, West-4, and Central-3 These
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Mitigation Strategy Cost to Impleme
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Sub-region Watershed Characteristic
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TA1112733 page 155
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Music and Caya, 2007 Richter and Ba
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http://www.arcgis.com/home/item.htm
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Rank Community Name LGP# 82 Massey
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Rank Community Name LGP# 252 Little
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Rank Community Name LGP# 423 Thornl
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TA1112733 page 167
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FOX ISLAND RIVER-POINT GALLANTS GEO
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GEORGE'S BROOK-MILTON GOOBIES GRAND
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TA1112733 page 173
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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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