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Task 6: Road assessment and modification

Rural dirt roads are a major source of sediment in the watershed. Poorly designed, located or maintained dirt roads can intercept, divert, concentrate and accelerate surface runoff. This leads to accelerated soil erosion, gully formation, and channel downcutting. This runoff of fine-grained sediments increases turbidity and stream bottom deposits, directly impacting water quality.

The restoration of dirt roads under this task has included:
  • Construction of rolling dips, waterbars, outsloped sections, grade breaks, and cross drains that move water off the road
  • Install of boulder cross-vanes above road crossings in lieu of culverts
  • Realignment of dirt roads at low-water crossings to cross channels at an appropriate angle
  • Realignment, relocation or rebuilding of problem road segments in order to improve drainage
  • Proper closure and reclamation of abandoned roads.

Road restoration consultants laid out and designed the road treatments. The consultants and additional equipment operators implemented the projects. All of the projects are being monitored to determine how road improvements can impact water quality. A workshop demonstrating these restoration techniques was held for the general public, and another will be held for County Road Department staff. Following the workshop, free technical assistance may be offered to County Road Dept. staff.