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Figure 20. Map of a portion of the Noyo watershed in northern California showing the distribution of high hazard (log(q/Tē -3.1) in black, moderate to low hazard in gray and stable areas in white. Also shown is the channel network steeper than 5% (slopes less than 5% will not transmit debris flows). Contour interval is 40 ft. Much of this watershed is managed by Louisiana-Pacific for timber production.
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Copyright 1998, William Dietrich and David Montgomery
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