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sinuosity: I.8-2.2 (1.0.1.3) <br />stream type: C~ - (Current types; Fd and D4) <br />'ihe dimension, pattern and 1+mfile of this river is in rnaor dis-equilibrium (unstable). In <br />my opinion, then is no doubt that the gravel operations along this river havr caused this <br />instability and loss of values. <br />The current conditions I observed along. the Animas Kivrr are the very conditions that <br />the clean water act is designed to prevent. <br />RECOii1!1I E!~i DA`II ONS <br />There are Srave inconsistencies inhow !Deal regulatiora allo•.v one operator to excavate <br />very deep in the main channel, whil: other operator,: are limited to only `'scalping" bats down to <br />the low flow level.. Evzn scalping bars maintains a high width..`dc:pth ratio, steepens th ~ slope, <br />increases the rate ofdown-valley me<vtder migration, induces deposition during runoff events <br />which accelerates bank erosion and maintains an unstable ch3,rel ;here has been little to no <br />monitoring by the Colc+rado State Department of minerals and Geolo;y for channel intpacts and <br />voltuttes extracted annually. <br />Although there are reaches that have been rip: rapped, collectively there has been little <br />effort at regaining the stability of the river. Or.c operator, Ron Pettigrew, with Btu-nett <br />Construction, has been trying to get basic data nn the river in an attampt to desicn a method of <br />gravel harvesting without some of the apparent pan impacts. In flia, hz requested technical <br />assis[ance froth me about 2 years agv, but I was not available at the time to assist him. He has <br />since retained a local consultant firm to assist him This is a positive step toward seeking a <br />solution to the in-channel gravel rnirii!:g iinpac[s. <br />To start a reversal of the problems directly nhsen ed in the ricer, tentative permits <br />(tentative if the operations through monitoring demonstrate a start in the process of recovery). <br />