fscp 2010 11 prsnttn prioritizingwatershedsforremediationnov2010rev2
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http://foothillsri.ca/sites/default/files/null/FSCP_2010_11_Prsnttn_PrioritizingWatershedsforRemediationNov2010rev2.pdfTRANSCRIPT
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Foothills Stream Crossing Program
Prioritizing Watersheds for Remediation
November 29, 2010
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Requirements for prioritization
• Quality stream crossing data across entire study area
• Ratings based on fish passage, sedimentation, and safety
• Delineated watersheds
• Multi-stakeholder collaboration
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Inspection priorities
• Safety
• Water quality
• Fish passage
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Safety
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Sedimentation
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Fish Passage
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Inspection Protocol
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Fish Passage Parameters
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Why do we prioritize
• Large landscape scale problem (can not fix all problems at once or in a short period of time)
• Maximize environmental benefits with available funds
• Allows for collaboration between companies (crossing owners) and with the regulators
• Allows for planning over time (manage the problem as opposed to an ad hoc approach)
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Watershed Priorities
Based on
• Size
• Kilometers of blocked fish habitat (based on the Fish Probability Model) due to crossings
• Confirmed fish presence
• Sedimentation risk ratings
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Watershed Prioritization (Work in progress)
• 266 delineated watersheds
• Next Step
• Select for watersheds with greater than 1km of blocked stream
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Watershed Prioritization (Work in progress)
– Greater than 1km blocked stream
Next Step
• Select for watersheds greater than 50km2
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Watershed Prioritization (Work in progress)
– > 1km blocked
– > 50km2
Next Step
• Select for watersheds with confirmed fish presence
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Watershed Prioritization (Work in progress)
– > 1km blocked
– > 50km2 area
– > Confirmed fish presence
Next Step Select for watersheds with 3 or more high sedimentation risks
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Watershed Prioritization (Work in progress)
– > 1km blocked
– > 50km2 area
– > Confirmed fish presence
– Containing 3 or more high sediment risks
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Fish Probability Model
• Drainage area • Basin slope • Basin elevation • Percent wetlands • Reach elevation • Reach slope
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Fish Probability Model
Pros
• Prioritizes a huge number of crossings and watersheds
• Quick
• Easy to use
• Best available management tool
Cons
• Uses best available data but some gaps are present
• Only extends to FMA border
• Like all models, not 100% accurate
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Summary
• A good protocol is in place for inspecting crossings and for identifying problems
• There is strong collaboration between companies and the regulators
• Need a way to prioritize on a watershed basis
• Prioritization provides a way to manage crossing issues over an agreed to time period and ensures dollars are spent with the best return for the environment
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