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Roads,
Skid Trails, Landings, and Stream Crossings |
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Planning
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Road erosion is a primary cause of stream sedimentation
associated with forest harvesting. Mass movement associated with road construction
also causes sedimentation. Water quality of streams and lakes can be protected
by careful planning, designing and proper construction of roads after they
have been appropriately located. Proper planning can be helpful to a landowner
by reducing the number, width and length of roads, decreasing the amount
of maintenance re q u i red and limiting the visual and physical impact
to the land. A reduction in the amount of roads to be constructed can also
save a landower money. |
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Planning decisions affect the cost of a road
system, long-term maintenance needs, life expectancy and the amount of nonpoint
source pollution it may cause. The type, location and design of any road
should be based on: |
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- Future uses of the road system.
- Site specifics such as soils, slopes, geology, vegetation, storm runoff,
etc.
- Coordination with adjacent landowners, if possible.
- Use of temporary roads whenever practical.
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Additional points to consider when planning for
road construction include the following: |
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- Locate roads on well-drained soils wherever possible.
- Avoid unstable slopes which may be evidenced by slumps, uneven topography,
pistol-butted or J-shaped trees, dips, cracks or previous slides.
- Identify optimum stream crossing locations first, then locate roads
to accommodate these crossings.
- Roads should be located outside of stream management zones.
- Locate roads to follow natural contours as much as possible. This
will minimize cuts and fills and reduce need for fill material or removal
of excess material. It will also decrease the amount of disturbed area
which may then need to be revegetated.
- Keep road grades below 10%, if possible. Roads may exceed 10% for
short distances but, if so, install road drainage features and take
measures to prevent erosion.
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