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<br />Table 3. Volume of sand and gravel moved in the Blacksnith Fork and Logan Rivers during various <br />time intervals. <br /> <br /> Site and Time Interval <br /> Logan River Bl acksmith Fork Blacksmi th Fork Logan River <br /> r'~ovement Blacksmith Control Dredged Recently Bull- 01 d Bull dozed <br /> of Fork Contra 1 Spring 72 Apr 75 Sep 75 dozed May 75 Feb 72 Nov 75 <br /> Substrate Nov 75 Jul 76 Nov 75 Jun 75 Jun 76 Sep 75 Jun 76 Nov 75 Nov 75 Jul 76 <br /> Erosion <br /> 3 213 881 1390 908 517 671 1024 572 <br /> m Total <br /> 3 38 229 249 221 119 599 293 114 <br /> m /100 m <br />+:> <br />O'l Deposition <br /> 3 704 655 2519 1376 729 526 346 461 <br /> [11 Tota 1 <br /> 1l13/100 m 127 171 451 335 168 470 99 92 <br />