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The Hydraulic Geometry Curve: A Tool For Assessing Agroforestry Options . Joe Magner & Ken Brooks University of Minnesota. Cumulative Watershed Influences Function of : 1) Natural Phenomena & 2) Intensity of Land use Management. Silvopastoral Management?. Local Ground Water Seepage.
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The Hydraulic Geometry Curve: A Tool For Assessing Agroforestry Options Joe Magner & Ken Brooks University of Minnesota
Cumulative Watershed Influences Function of: 1) Natural Phenomena & 2) Intensity of Land use Management
Silvopastoral Management? Local Ground Water Seepage
Could Woody Prevent This? Massive Bank Slump
Clear need for Buffers – But Where? Engineered hydro-pathways
Strategic Perenniality Swales & Oxbows
Is the Channel Adjusting? Buffer Design Must Consider Channel Adjustment!
Understanding Scale? What is the relationship between Channel Cross-sectional Area & Drainage Area?
Regional Hydraulic Geometry Curve • Drainage Area VS Cross-Sectional Area • Regional Climate, • Terrain & Valley Type • Geologic Phenomenon – Soils, Bedrock, Lakes & Wetlands • Land Use Management and Associated Hydrologic Pathways, Examples:
Rosgen “E” Type Channel Bankfull = Top of the Bank
Rosgen “F” Type Channel Bankfull?
Conclusions • Decision Tool for: Assessing Systemic Vs Local Channel Instability (Excess Runoff or Geotechnical) • Designing Woody Location in Riparian Buffers, and • Channel Restoration (Placement of Large Woody Debris)