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:: Home > Watersheds > Water Quality > Water Pathways
The major causes of erosion appear to be runoff from roads and skid trails, and landslides. Cutting which occurs too close to streams can deposit large amounts of silt and sediment into the watershed system.  Timber harvesting in Oregon today leave wide buffers along streams, keeping a protective layer of vegetation to filter out sediments, shade the stream from warming rays of sunlight, and preserve habitat for wildlife. Not only does this make good sense, but the Oregon Forest Practices Act mandates this practice.