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Gully and rill erosion on old logging roads lead to massive soil loss in the Grass Valley Creek watershed. Photo courtesy of the Trinity County Resource Conservation District.


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Crossing at Phillips Gulch has washed away a substantial amount of fill material. The culvert appears undersized to handle flood flows which has triggered this problem. Just east of Trinity Dam Blvd. 32.100 4/99. Photo courtesy of the Trinity County Resource Conservation District.


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This is a large deposits of decomposed granitic sands which have formed a delta below a road gully in the Grass Valley Creek watershed. 5/83. Photo courtesy of the Trinity County Resource Conservation District.