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7. lvrm ch7 ukraine surf subdrainage-1 hr-

subdrainage

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7. lvrm ch7 ukraine surf subdrainage-1 hr-

  1. 1. SURFACE DRAINAGESURFACE DRAINAGE Natural Channel CrossingsNatural Channel Crossings CulvertsCulverts Low-Water CrossingsLow-Water Crossings BridgesBridges Surface DrainageSurface Drainage Sub-Surface DrainageSub-Surface Drainage Meadow CrossingsMeadow Crossings
  2. 2. Photo: USDA Forest Service
  3. 3. Photo: Gordon Keller
  4. 4. Outlets/Inlets
  5. 5. USFS
  6. 6. Leadouts- Leadoff Ditch
  7. 7. USFS
  8. 8. Ditches
  9. 9. Photo: Gordon R Keller
  10. 10. USFS
  11. 11. Switchbacks
  12. 12. Steep Grades
  13. 13. Over-Side Drains
  14. 14. Meadow Crossings
  15. 15. Springs/Wet Areas
  16. 16. Corduroy Road
  17. 17. Underdrains
  18. 18. Filter Blanket
  19. 19. DRAINAGE DRAINAGE DRAINAGE
  20. 20. Pay Attention to Drainage Detail

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