For each of the rivers and river segments specified in this subsection, there is hereby established a streamside protection zone in which timber harvesting shall be prohibited except as permitted by section
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(a)(7) of this title. Such zone shall extend 300 feet from each bank of the rivers and river segments, or 100 feet from the inner gorge of said rivers and river segments, or within the limit of high and extreme landslide hazards on said rivers and river segments, whichever is greater. The provisions of this subsection shall apply to the following rivers and river segments: