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

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3.4.4 Sea Level Rise Figure 3-20. Predicted Annual Tropical Cyclone Frequency for the North Atlantic Ocean (based on Effect of Climate Variability and Change in Hurricane Activity in the North Atlantic Report, 2011) Sea level monitoring is an important activity as the data are used directly at the planning stage as inputs to the development of flood risk maps and at the operational level as part of flood forecasting and emergency measures response. This is particularly relevant for a province such as Newfoundland and Labrador with a preponderance of coastal municipalities. Sea level is affected by short-term and longer-term causes. Short-term changes may include tides, seasonal fluctuations due to precipitation and evaporation, and temporary sea level changes from intense storms which result in reduced atmospheric pressure and storm surge or wind setup; both conditions that can effectively raise the sea level at the shoreline. For the longer term, sea level is an ocean indicator for climate change. Sea level in the province has been observed to be rising relative to benchmarks and wharf deck elevations. The rate of global mean sea level rise is presently estimated at about 3 mm/year, yet another confirmation that global warming is already underway. There are regional differences. For the North Atlantic, a comparable rate of about 2.5 mm/year is estimated. This is illustrated in Figure 3-21 which is based on satellite altimetry data 17 . These rates may increase with continued melting of the polar ice caps and warming of the oceans. 17 satellites, such as TOPEX/Poseidon, use radar altimetry to measure ocean surface topography: radio waves are sent to the ocean surface and timing their return gives very accurate (within a few centimeters) measurement of sea level. TA1112733 page 70
Figure 3-21. Change in Mean Sea Level, North Atlantic (Source: Aviso, 2011; Reference Satellite and Seasonal Signal removed settings) Sea level also changes locally in relation to the geological uplift or subsidence of the earth which is in response to the retreat of the ice sheets that covered and depressed the land during the last glaciation, some 10,000 to 20,000 years ago. Though uplift has slowed since the glacial sheet melted, it is still occurring at different rates over the province. Geophysical modelling indicates uplift rates of 0 to 4 mm/year for Labrador and the Northern Peninsula, and subsidence rates of 0 to 2 mm/year for Newfoundland (Batterson and Liverman, 2010). TA1112733 page 71
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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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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
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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 87 and 88: West sees slightly larger winter in
Page 89 and 90: These increases, though slight, in
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Page 121 and 122: Worst Case Scenarios This section
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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
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Page 147 and 148: Figure 5-3. Storm tracks for select
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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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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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