Transboundary Flathead RiverAquatic Adaptation Strategy · Transboundary Flathead RiverAquatic...
Transcript of Transboundary Flathead RiverAquatic Adaptation Strategy · Transboundary Flathead RiverAquatic...
Transboundary Flathead RiverAquatic Adaptation Strategy Strategy
Max. resiliency of aquatic habitat
Muhlfeld & Hauer (GNLCC Project)
Stressors: Invasives
Habitat Loss
Climate Change
Adapted from Glick et al. (2011)
NetMap Digital Landscape
Derived from 10m US and 0.75 arc-second Canadian DEM’s and NHD for low gradient areasa
Spatially Referenced
Integration of Upslope “Inputs”
Stream Channels Divided Upslope Area Identified Upslope Processes
Datasets Included in NetMap Analysis
•! Roads •! Spatially variable sources
of road sediment production and delivery to streams across the FRB
•! Background Sediment Yield
•! Fish habitats (BT and WSCT) - Rough
•! Floodplain and channel migration
•! Wildfire risk and post-fire erosion - US
•! Climate change analysis tools
•! Culvert/Drain data
Stream/Road Analysis Stream/Road Analysis Stream/Road Analysis
Roads Hydrologically Connected GRAIP - Lite Summarize back to Reaches Roads
Erosion and Sediment Delivery from Roads Is Modeled
NetMap Subdivides Roads Additions of drain points and re-analysis improve accuracy of projections Both WEPP and GRAIP built on multiple assumptions for predictive algorithms GRAIP: Sediment Prod. = Base Road Surface erosion rate x Elev. Difference between road endpoints x Road Surface x Veg. NetMap Calculates Distance of road segment to Stream Repeatable Process: new data, fine tune areas, scenarios
Floodplain Dynamics – Considerations of Riparian Management and Road Locations
Riparian management in Channel migration zones Investigation: management activity (road relocation, etc.)
Fish Distribution and Habitat Selection – Ongoing Refinement
Sensitive/vulnerable Aquatic Habitats
Prioritized Risk Assessments
Field Visits: increase efficiency , validate and calibrate
Reaches most vulnerable to sediment delivery where spawning is happening at <4% grade
Field Investigations: Evaluate Modeled “High Risk” Road Segments for Validation/Remediation Options
Field Visits: validate model, what to do about areas, manager collaboration
Upslope inputs tied with stream channel segments
Field Investigations: ID Roads Segments for floodplain intersection? Opportunity Identify sites for field visits Repeatable process Layers ready to be accessed on LC MAP NetMap Loadable on Partner Systems Transboundary Help Documentation Available
Cabin Creek Field Map: Floodplain/Road Intersections
Cabin Creek Field Map: Road Surface Erosion
Cabin Creek Field Map: Priority Reaches and Contributing Roads
Next Steps?
Discussion/Questions? Future incorporation of new data (NOROCK/UM, Canfor)? Application for terrestrial adaptation strategy?