Laserfiche WebLink
<br />" ..,., ., <br />q<.i:U_ <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />areas during thundershowers of high intensity and from <br />diversion of the stream into newly excavated channels. <br /> <br />(8) Present Lake Creek flows below the dam are periodically <br />reduced to only that amount which leaks through the gates <br />and seeps through the dam., Consideration in conjunction <br />with cooperating agencies is now being given to the estab- <br />lishment of a minimum flow in Lake Creek. <br /> <br />(9) Some increase in the stocking of, fish will be required <br />by the enlarged lake. If catchable size fish are used, the <br />formula calls for a stocking rate of 95 pounds (380 fish) <br />per surface acre per year. The plants are based on average <br />pool and not maximum pool. Hence the increase will be 95 <br />pounds tim,:s the avcrClp,e number of acres the pool will hC)ve <br />been increased in size during the summer fishing season. <br />Under Project conditions, the average water surface area, <br />May through September, will be about 2,100 acres. Histori- <br />cally, the May through September water surface area has <br />averaged 1,930 acres. The difference of 180 acres will <br />require an additional yearly catchable size stocking of <br />about 68,000 fish or 17,000 pounds of fish. <br /> <br />(10) The lake trout stocking program often is based on <br />availability rather than a set formula due to the difficulty <br />of locating and obtaining lake trout eggs. Therefore, no <br />increase in stocking of lake trout can be projected. <br /> <br />(ll) Twin Lakes are of glacial origin. "Glaciated lakes <br />, normally begin as relatively deep and unproductive bodies <br />of water and increase in productivity with time. Reservoirs, <br />on the other hand, often inundate rich bottom lands and <br />fertile topsoils on river slopes and normally begin with <br />a high productivity and tend to suffer a decline in produc- <br />tivity with the passage of time "(FWPCA, 1967). Inundation <br />of new lands at Twin Lakes will increase organic matter <br />causing a "bloom" stage characterized by decomposition, <br />microbial activity and more abundant nutrients. There will <br />be an increase in fish habitat due to enlargement of Twin <br />Lakes. <br /> <br />(12) With a 6-hour generation from the Mt. Elbert Pumped- <br />Storage Powerplant, the daily fluctuation of Twin Lakes <br />water level is expected to be 1.1 to 1.7 feet. <br /> <br />(13) The enlargement of Twin Lakes and the ensuing inundation <br />of approximately 1 mile of Lake Creek will destroy calving <br /> <br />IV-72 <br />