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<br />'. <br /> <br />t -'l 1.Il .) <br />':{'t't.:.. <br /> <br />and the runoff carried some of the loose soil to the streams <br />causing temporary turbid conditions. The clearing caused an <br />edge effect at the interface of the timber and water. Raptors <br />are the primary users of this interface area. <br /> <br />(5) The rock and earth fill dam has created a visual man-made <br />intrusion on the natural landscape. Construction resulted in <br />scars from borrow areas, quarries, and access roads. Revege- <br />tation will be performed where possible, but some of the scars <br />will be virtually impossible to revegetate. <br /> <br />. <br /> <br />(6) Inundation of about l,OOO acres of land and 7 miles of <br />the Fryingpan River, access to the reservoir, and recreational <br />development of Ruedi Reservoir have created a loss of bottom- <br />land (winter range) wildlife habitat along the Fryingpan <br />River. These lands provided winter forage for big game <br />utilizing the area. According to the Colorado Division of <br />Wildlife, the Fryingpan River Basin supports approximately <br />600 to 800 elk (trend count only), a medium high population <br />of deer, low population of bear and mountain lion, and a very <br />low population of big horn sheep. Data is not available <br />concerning increases and decreases in carrying capacity, <br />magnitude of displacement, effects on migration, and the <br />degree in changes of species composition. <br /> <br />(7) Based on the size of the Fryingpan River Basin, inunda- <br />tion and increased recreational use at Ruedi Reservoir will <br />have an effect on wildlife. The magnitude of the effects <br />will depend on the human activity associated with the <br />recreation opportunities and administration of the area. <br />For example, small mammals and some avain fauna are expected <br />to increase in presence and population. <br /> <br />(8) Development of Ruedi Dam and Reservoir has increased <br />the available fish reservoir habitat. As a result, 12.9 <br />tons of hatchery reared fish are planted each year <br />~ish and Wildlife Service - 1969). Lake type recreation <br />opportunities exist which were previously not available <br />in this immediate area. A gain of 65,000 man-days of <br />fishing per year is estimated for Ruedi Reservoir. <br /> <br />(9) Measurements of various physical, chemical, and biologi- <br />cal parameters have shown Ruedi Reservoir to be following <br />the pattern characteristic of most mountain reservoirs. <br />Water temperatures at the surface ranged from about 500 F <br />in June to 680 F in mid-August, while bottom temperatures <br />ranged from 450 F to 500 F during the same period. <br /> <br />. <br /> <br />IV-52 <br />