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         Basin-wide/Regional  | 
     
     
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         Sediment: V* by Mattole Salmon Group in Lower Mainstem, 2000 | 
     
 
 
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   Caption:  This chart displays average V* values for pools sampled in the lower mainstem reach in 2000.   V* is in decimal percent.  A V* of 0.50 indicates that half of the pool is filled with fine sediment.  The 0.21 target threshold is from the TMDL for the Big River and other North Coast Rivers. Data are provided by the Mattole Salmon Group.  See Info Links for more information.  
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