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<br />~ <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />structures and re-conoection of Rock Creek with its floodplain through a 1900' oxbow <br />channel <br />Increased riparian vegetation quality and quantity by providing bank stability and increased <br />access of the creek to side channels within the floodplain. <br /> <br />The successful completion of this restoration plan has created a changed physical condition and <br />increased biological potential that represents, in our opinion, an increased ability of this channel to <br />"protect aquatic biota to a reasonable degree" beyond the potential it had in 1977 when the ISF <br />appropriation was establisbed. The changed condition providing increased potential for Rock <br />Creek to protect biota to a reasonable degree includes: <br /> <br />. Increased area of suitable trout aquatic habitat <br /> <br />12,000 linear feet of restoration completed including the installation of 80 high <br />quality pools <br />1000' ofbank revetment and revegetation <br />240 instream rock habitat clusters with minor pools <br />Added 1900 linear feet of oxbow channel trout habitat <br /> <br />. <br /> <br />Increased value of the habitat present to satisfY the needs of the aquatic biota during <br />stressful low flow conditions <br /> <br />Average depth of thalweg at bankfull in nm areas increased from 1.5' to 2.5' <br />Pool size increased from <Yo width at bankfull to >Yo.. 3/4 width at bankfull <br />Poollengtbs increased from < Yo bankfull width to 4-8 bankfull widths <br />Pool depths increased from 3' at bankfull to 4'-7' at bankfull <br /> <br />. <br /> <br />IDCreased stability aDd IoDgevity ofhabitat for biota in Rock Creek <br /> <br />Activities installed 2500 3'-7' boulders that will not be easily mobilized by Rock <br />Creek flows in configurations well known for stability and function as fishery <br />habitat improvements <br />Every structure has a physical design consideration to allow it to function to <br />reduce velocities of near bank areas which reduces erosion <br />All areas of natural or man caused destabilization of streamside vegetation was <br />reseeded and in some cases replanted with woody vegetation. Great care was <br />taken to minimire any disturbances to riparian vegetation <br /> <br />. <br /> <br />IDCreased divenity aDd connectivity of Rack Creek aquatic habitat <br /> <br />1900' ofadditioIl81 aquatic habitat (77.000 sq. ft.) through restoration of historic <br />oxbow channel <br />Oxbow restoration created additioIl81low velocity, high productivity habitat for <br />rearing of juvenile and sub-adult fish <br />Oxbow channel creation (77,000 sq.ft.) represents U1lique and significant additioIl81 <br />