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stream channel at the base of Area 41. It is not known whether this <br />• channel was actively eroding or incising prior to mining, however, the <br />two points are distinctly separate from the bulk of approved condition <br />data points. <br />Plotting existing and approved slope versus drainage area shows that <br />the majority of existing data points fall within the range of the <br />approved data points. There are several points which plot above <br />approved data. Point number 1 (Fig. 2.9) represents the channel at the <br />bottom of basin 7-2 in area S1W. This area has been cited in the NOV <br />(area E) as a location of an oversteepened valley bottom. Points 2 and <br />3 are located along the lower reaches (2250 feet upstream from the mouth <br />and at the mouth, respectively) of channel 9/10-2 in area S1E. Point 4 <br />represents the stream channel at the bottom of area 41. These areas <br />• have also been cited in the NOV for oversteepened valley gradients (NOV <br />areas F and A, respectively). Point 5 represents an area in the channel <br />1600 feet upstream from the mouth of basin 9/10-1. These five points <br />indicate specific areas where channel erosion is likely to occur and it <br />is suggested that protective measures be taken at these sites. In <br />general, however, it can be seen that the erosive power of streamflow <br />has not been significantly changed through the mining and reclamation <br />process. <br />2.4 Discussion <br />Statistical geomorphic analysis of approved and existing topography <br />at the Eckman Park Mine indicates that there is no significant <br />C~ <br />23 <br />