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DCPFLO-2016-00001
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DCPFLO-2016-00001
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DCPFLO-2016-00001
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Channel Geometry and Evolution <br /> Channel planform geometry statistics were analyzed in ArcGIS®using 2010 aerial photos from <br /> the Wisconsin Regional Orthophoto Consortium. Geometries were calculated for both the <br /> upstream reference reach (station 3250) and riffle reach(station 4450). The reference reach <br /> statistics were used to calculate plan form geometry for the restored stream design (Figure 11). <br /> We compared the 2010 aerial photographs with images from 1937, 1955, 1968, and 1980. The <br /> images were georeferenced and compared but no visible channel meandering was <br /> detected. Unfortunately,the earliest image available was taken after Harbison Creek was routed <br /> into the pond and did not display any evidence of the previous,natural channel. These results <br /> are consistent with the existing hydraulic model that indicates relatively low stream power and <br /> little potential for lateral channel migration. <br /> Fisheries Survey <br /> The Wisconsin DNR sampled fish in Harbison Creek in August 10, 2000,August 1, 2001,July 9, <br /> 2002,July 13,2003, and July 19,2013. Fish species and lengths were provided by fisheries <br /> manager Kurt Welke at the Wisconsin Department of Natural Resources. Fish were sampled <br /> using a stream shocker from the pond to Highway 19 in all years except in 2000 when fish were <br /> also sampled from Highway 19 up to Pederson Springs. Sampling reaches were 35 mean stream <br /> widths or about 110 meters from start to finish. We compiled the data from each year into <br /> length frequency histograms. <br /> Overall, it is likely that the stream is primarily used as a spawning area in the fall for larger <br /> trout observed in Token Creek. During the rest of the year, we suspect it serves as a nursery to <br /> younger fish and likely contains a healthy food supply of aquatic macroinvertebrates. The <br /> presence of mottled sculpin, and trout, is a sign of good water quality as they are relatively <br /> sensitive species. Of additional note, small numbers of brook trout and brook stickleback were <br /> also sampled. <br /> Fish data <br /> In 2000, a large number of young of the year (YOY) brown trout were observed above Highway <br /> 19. It is possible that the 2000 year class was successful and comprised the majority of the large <br /> number of year one fish observed in 2001. This trend was observed between 2002 and 2003. In <br /> 2002, there was an increase in YOY fish and year class one fish sampled which indicates <br /> survival of the 2001 year class. 50 year two fish were also observed in 2001 indicating good <br /> survival of the 2000 year class. <br /> Larger trout(year class 4) were observed in 2000 and 2001 but not in 2002,2003, or 2013 (Figure <br /> 12). This may have been because sampling in the latter years was done in July whereas, in 2000 <br /> and 2001, sampling was done in August and these older fish may have been seeking spawning <br /> area in Harbison Creek.While the fish were not officially aged (age classes were obtained based <br /> 13 <br />
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