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Quantitative surveys of alterations of stream channels were conducted in 15 logged reaches of several small streams (watersheds <26 km2) in the central interior of British Columbia. Four streamside logging practices were examined: non-directional falling and skidding, directional falling and skidding, selective strips and reserve strips along streambanks. Non-directional falling and skidding caused considerably more disturbance including debris accumulations, soil losses from streambanks, channel diversions and obstructions to fish migration. Directional falling and skidding on steep slopes was less effective in reducing alterations than when associated with low slopes but was a definite improvement over the non-directional method. Selective strips, when utilized in reaches where "blowdown" was infrequent were highly effective in minimizing channel disturbance. Minimal streambank encroachment by skidtrails was the primary reason for reduced alteration of the channel but the benefits of selective strips can be...
Slaney, P.A., Smith, H.A.; Halsey, T.G.. 1977. Physical Alterations to Small Stream Channels Associated with Streamside Logging Practices in the Central Interior of British Columbia. Ministry of Environment. Fisheries Technical Circular. FTC31
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