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Development of Projected Intensity-Duration-Frequency Curves for Corner Brook and Goulds/Petty Harbour, Newfoundland May 16, 2012 Table 2-2 - Historical Annual Maximum Precipitation Events Deer Lake Station, 8401501, mm Year 5 min 10 min 15 min 30 min 1 h 2 h 6 h 12 h 24 h 1966 2.8 3 4.6 6.3 9.9 13.7 21.8 25.9 29.2 1967 5.1 5.8 7.1 10.9 14.2 19.3 31.7 37.6 38.6 1968 4.1 6.1 8.9 12.2 13.2 21.3 41.1 52.1 64 1969 3 4.8 6.1 7.4 10.7 14.7 25.9 31 37.8 1970 2.8 3 4.1 6.9 13.2 23.4 38.1 39.6 40.1 1971 3.6 5.6 6.6 8.9 11.2 12.4 22.9 27.7 29.2 1972 4.6 4.8 5.3 7.4 9.7 15.7 27.4 36.6 45 1973 7.1 12.4 13.5 15.2 15.7 23.1 36.6 47 50.3 1974 2.8 5.3 7.4 9.1 13.7 16.8 28.2 32 43.9 1975 7.1 8.9 11.2 15.7 23.9 39.9 44.7 50.8 66.5 1976 3.8 3.8 4.3 6.9 9.7 13.2 25.7 39.1 42.4 1977 3.8 7.4 7.6 15 18.3 18.5 34.3 46.7 47.5 1978 6.9 10.8 13.9 16.5 19.6 36.1 36.1 36.1 45.9 1979 4 6.5 7.7 9.6 9.8 11.9 24.2 33.3 41.2 1980 3.1 4.9 5.8 7.1 10.1 15.3 34.3 55.7 62.7 1981 3.4 4.4 5.1 8.3 14.1 15 24.3 37.9 43.8 1982 1.9 3 4 6.4 12.7 21.5 30 30.2 38.3 1983 4 6.5 7.4 12.1 19.8 28.1 34 36.8 46.3 1984 11.6 12.8 12.8 12.8 12.8 17.8 31.1 33.8 43.3 1985 3.3 4.6 4.8 7.6 10.6 13 18.2 25.7 32.7 1986 2.2 4.3 5.4 7.3 10 13 21.5 28.2 39.9 1987 4 5.7 6.7 10.2 10.9 15.5 25.2 25.7 26.7 1988 8.3 10 11.9 14.1 16.2 18.9 31 39.8 39.8 1989 4 5 6.2 8.5 11.6 17.2 26.4 34.4 40.8 1990 6.2 9.2 11.2 12.5 16 21.9 22.8 37.3 38 1991 2.3 3.7 3.9 6.4 11.2 18.5 38.2 40.4 43 1993 1.8 3.2 4.8 6.7 9.7 17.8 28.7 31.9 40.8 1994 4.7 9.4 10.1 13.5 19.9 25.8 33.9 39.7 51.3 1995 2.8 3.6 4.7 9.2 13.5 23.1 44.9 54 70.1 1996 2.5 3.9 5.1 7.2 10.9 20.1 44.6 59 59.1 1997 3.6 5.1 6.6 10.1 12.4 13.4 21.1 30 35.6 1998 2.6 3.8 4.8 9.6 13.4 19.6 29.4 42.3 53.6 1999 3.3 5 7.5 14.8 21 24.3 25.2 39 41.4 2000 7.8 10.4 10.4 11.5 16.5 28.7 46.9 48.3 48.3 2001 5.2 7.5 9.7 13.3 18.3 24.2 27 31.5 38.2 2002 4.2 7.5 11.1 15.8 19.8 21.5 36.5 44.2 49.2 AMEC Environment & Infrastructure 6
Storm Duration Development of Projected Intensity-Duration-Frequency Curves for Corner Brook and Goulds/Petty Harbour, Newfoundland May 16, 2012 Figure 2-3 - Historical IDF Curve, Stephenville A Station, 8403800 Table 2-3 - Historical IDF Table, Stephenville A Station, 8403800, Precipitation intensities over the specified duration, mm/hr Return period (years) 2 5 10 20 25 50 100 5 min 52.0 68.3 79.1 89.4 92.7 102.8 112.8 10 min 39.0 54.4 64.5 74.3 77.4 86.9 96.4 15 min 32.8 45.5 53.9 62.0 64.5 72.4 80.3 30 min 22.9 31.9 37.8 43.5 45.3 50.9 56.4 1 hr 16.0 21.2 24.6 27.9 29.0 32.2 35.4 2 hr 11.0 14.4 16.6 18.7 19.4 21.5 23.6 6 hr 6.3 8.2 9.5 10.8 11.2 12.4 13.6 12 hr 3.9 5.1 5.9 6.7 7.0 7.7 8.5 24 hr 2.5 3.3 3.9 4.4 4.6 5.1 5.6 AMEC Environment & Infrastructure 7
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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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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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Page 213 and 214: 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: Storm Duration Development of Proje
Page 267 and 268: Storm Duration Development of Proje
Page 285 and 286: 1979 1983 1987 1991 1995 1999 2003
Page 287 and 288: Mean Annual Total Precipoitation, m
Page 289 and 290: Storm Duration Storm Duration Devel
Page 291 and 292: Storm Duration Storm Duration Storm
Page 309 and 310: Codroy Valley Watershed Topography
Page 311 and 312: Parson's Pond Watershed Topography
Page 313 and 314: 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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