CC Vulnerability Assessment - Souris FINAL Combined.pdf

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LIST OF FIGURESFigure 1 - Slumping of land and rock along Breakwater Drive ..................................................................... iiFigure 2 - Property at risk from erosion ...................................................................................................... iiiFigure 3 - Guard rail near the edge of a cliff in Souris ................................................................................. ivFigure 4 - Souris’s town hall, built in 1905, is home to administrative offices, the Council chamber andthe local library ............................................................................................................................................. 1Figure 5 - Souris West, incorporated in 1972, has a population of 327 ....................................................... 1Figure 6 - Souris Harbour is home to the Magdalen Ferry Terminal and local fishing vessels ..................... 2Figure 7 - Looking toward Lobster Point (Souris West) from Sheep Pond ................................................... 4Figure 8 - Storm surge in December 2004 resulted in severe infrastructure damage at Basin HeadProvincial Park ............................................................................................................................................... 5Figure 9 - Areas impacted by storms, erosion, flooding and saltwater intrusion as identified by residentsof Souris and Souris West. ............................................................................................................................ 7Figure 10 - Coastal erosion below Bayview Lodge in Souris has resulted in a dramatic and unstableshoreline ....................................................................................................................................................... 8Figure 11 - Coastal change in the Souris area, determined by comparing aerial photos from 1968 and2010. ............................................................................................................................................................. 9Figure 12 - Coastal change in the Souris area, determined by comparing aerial photos from 2000 and2010. ........................................................................................................................................................... 10Figure 13 - Coastal change in the Souris West area, determined by comparing aerial photos from 2000and 2010. .................................................................................................................................................... 10Figure 14 - Coastal change in the Souris West area, determined by comparing aerial photos from 2000and 2010. .................................................................................................................................................... 10Figure 15 - Overwash damage on the North side of Souris causeway. The damage surrounds a utilitypole, and over tops a degraded gabion wall ............................................................................................... 13Figure 16 - A storm on January 21, 2000, resulted in storm surge reaching a land elevation of 1.75metres. The landward extent of the surge is marked in red ..................................................................... 14Figure 17 - Well field protection zones have been established to protect Souris’s five municipal wells(source: Souris River Watershed Management Plan). ................................................................................ 15Figure 18 - Saline wells in the Colville Bay area. This figure shows the locations of commercial andprivate wells in the Colville Bay area that contain saline water ................................................................ 15Figure 19 - Climate change flood risk scenarios for Souris in 2050. Projected flooding from sea level rise(green) plus 1-in-10 year (yellow), 1-in-25 year (orange), 1-in-50 year (red), and 1-in-100 year (dark red)storm surges are shown for the year 2050. ................................................................................................ 19Figure 20 - Souris Causeway in 2050. Flooding scenarios from sea level rise (green) plus 1-in-10 year(yellow), 1-in-25 year (orange), 1-in-50 year (red), and 1-in-100 year (dark red) storm surges are shownfor the year 2050. ....................................................................................................................................... 20Figure 21 - Climate change flood risk scenarios for Souris in 2100. Projected flooding from sea level rise(green) plus 1-in-10 year (yellow), 1-in-25 year (orange), 1-in-50 year (red), and 1-in-100 year (dark red)storm surges are shown for the year 2100. ................................................................................................ 21vii
Figure 22 - Climate change flood risk scenarios for Souris West in 2050. Projected flooding from sealevel rise (green) plus 1-in-10 year (yellow), 1-in-25 year (orange), 1-in-50 year (red), and 1-in-100 year(dark red) storm surges are shown for the year 2050. ............................................................................... 22Figure 23 - Climate change flood risk scenarios for Souris West in 2100. Projected flooding from sealevel rise (green) plus 1-in-10 year (yellow), 1-in-25 year (orange), 1-in-50 year (red), and 1-in-100 year(dark red) storm surges are shown for the year 2100. ............................................................................... 23Figure 24 - Erosion below Main Street in Souris will continue to threaten property owners and businessowners ........................................................................................................................................................ 24Figure 25 – Storm and sewer lines (green, along with distance from shore) and lift stations (blue) alongSouris’s coastline. ........................................................................................................................................ 25Figure 26 - Gabion baskets bordering the Souris Causeway were installed following the December 21,2010 storm .................................................................................................................................................. 27Figure 27 - Gabion groynes were installed along the shoreline of the Souris sandspit were in the 1980s.They were successful in trapping sand in the area as a means of shoreline protection ............................ 27Figure 28 - Snow-fencing structures were installed from the Souris Beach parking lot westward to theriver channel ............................................................................................................................................... 28Figure 29 - The Souris Breakwater (background), reconstructed in 2007, is designed to protect theharbour from the wave action and storm surge that currently erode the rest of Souris’s shoreline ........ 28Figure 30 - Coastal erosion in Souris has required this homeowner to remove a portion of his shed ..... 30Figure 31 - Elevated house on Harbour View Drive, Rustico Harbour ........................................................ 34Figure 32 - Grade 7 and 8 students at Gulf Shore School in North Rustico discuss climate change andrecent local weather events. ...................................................................................................................... 35LIST OF TABLESTable 1 - Historical records of coastal storms causing extensive damage in Souris and Souris West. ......... 6Table 2 - Coastal erosion studies in the Souris area ..................................................................................... 8Table 3 - Climate change temperature (°C) scenarios for Souris [Climate Station East Baltic (ID: 8300700)@ 46.43N 62.17W]. ..................................................................................................................................... 17Table 4 - Climate change precipitation (mm) scenarios for Souris [Climate Station East Baltic (ID:8300700) @ 46.43N 62.17W] ..................................................................................................................... 17Table 5 - Sea level rise (cm) scenarios for Souris (Canadian Hydrographic Services site: North LakeHarbour). ..................................................................................................................................................... 18viii
Page 1 and 2: CLIMATE CHANGEVULNERABILITYASSESSME
Page 3 and 4: STORIES OF WEATHER AND CHANGESouris
Page 5 and 6: was made to shift the location of t
Page 7: TABLE OF CONTENTSACKNOWLEDGEMENTS .
Page 11 and 12: 1. BACKGROUNDSouris and Souris West
Page 13 and 14: Many rural communities in Prince Ed
Page 15 and 16: 2. COASTAL HAZARDSFigure 8 - Storm
Page 17 and 18: Areas impacted by erosionAreas impa
Page 19 and 20: Figure 11 - Coastal change in the S
Page 21 and 22: Figure 13 - Coastal change in the S
Page 23 and 24: C. Coastal FloodingFigure 15 - Over
Page 25 and 26: D. Salt Water IntrusionThe Town of
Page 27 and 28: Table 3 - Climate change temperatur
Page 29 and 30: Figure 19 - Climate change flood ri
Page 35 and 36: Sewer and storm lines are close to
Page 37 and 38: Water Quality in the Souris River E
Page 39 and 40: identified through this process. Th
Page 41 and 42: There may be some liability to the
Page 43 and 44: Fortunately, there are a number of
Page 45 and 46: • Public activities such as open
Page 47 and 48: APPENDIX 2Vulnerability AssessmentT
Page 49 and 50: APPENDIX 3Souris Coastline ChangeTh
Page 51 and 52: Figure A3-3 Close up of the anthrop
Page 53: APPENDIX 4Shoreline Erosion Studies
Page 56 and 57: the base of the cliffs appears to b
Page 58 and 59:
APPENDIX 6Climate Change ScenariosT
Page 60 and 61:
Maintenance of parks, playing field
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APPENDIX 7Vulnerable Infrastructure
Page 64 and 65:
APPENDIX 9Available ResourcesThere
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) Stream flow monitoringStream flow
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d) Sea ice monitoringChanges in the
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Aerial photos and orthophotos can b
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4. HISTORICAL RESOURCESPast events
Page 74 and 75:
6. PLANNINGPEI Office of Public Saf
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Local Watershed GroupsCommunity wat
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CC Vulnerability Assessment - Souris FINAL Combined.pdf

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