Islands Trust Shoreline Methodology Report
· Islands Trust Area · Reports & Publications · 2011
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Topics: Marine & foreshore · Aquaculture & shellfish · Fresh water & aquifers — our classification, not the Trust's.
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ISLANDS TRUST Islands Trust Shoreline Mapping Project Methodology September, 2011 Prepared for the Islands Trust by: Paul de Greeff Brian Emmett Murdoch de Greeff Inc. Archipelago Marine Research Ltd. Victoria, BC Victoria, BC John Harper Alison Mewett Coastal and Ocean Resources Inc. Land & Water Inc. Victoria, BC Comox, BC Page | 2 Table of Contents: 1 Introduction ................................................................................................................................. 3 2 Project Rationale and Methodology ............................................................................................. 4 2.1 Thetis Island Pilot Project (UBC‐SALA) .......................................................................................... 4 2.1.1 Deviation from UBC‐SALA Pilot ‐ Guidelines Graphic Display Boards ................................... 5 2.1.2 Deviation from UBC‐SALA Pilot ‐ Values and Vulnerability Map .......................................... 5 2.2 Map 1 – Shoreline Classification ................................................................................................... 5 2.3 Map 2 – Energy and Sediment Movement ................................................................................... 6 2.4 Map 3 – Values and Vulnerability ................................................................................................. 7 2.5 Data Source ‐ ShoreZone .............................................................................................................. 8 2.5.1 The ShoreZone Data System ................................................................................................. 8 2.5.2 Modified shoreline .............................................................................................................. 10 2.5.3 Salt marsh ........................................................................................................................... 10 2.5.4 Wave exposure ................................................................................................................... 10 2.5.5 Eroding/accreting shorelines .............................................................................................. 11 2.6 Data Source ‐ Other .................................................................................................................... 12 2.6.1 Sea Level Rise Vulnerability Areas ...................................................................................... 12 2.6.2 Fetch diagram ..................................................................................................................... 13 2.6.3 Watersheds, Conveyance Zones & Areas Draining to Sensitive Shorelines ....................... 13 2.6.4 Watershed pour‐points ....................................................................................................... 13 2.6.5 Predominant Wave Energ
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