Laserfiche WebLink
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />at the Bluff gauge, and, in fact, increased during the Test <br />because of thunderstorms upstream and flows from <br />tributar; washes bctween Bluff and Farmingtun. <br /> <br />Optimum flows for rafting range between 1,000 to <br />3,000 cfs, and rafters rarely put in below 500 cfs because <br />of safety concerns, Between 500 to 1,000 cfs they generally <br />use smaJler boats, which can reduce the efficiency and <br />increase the cost for commercial operators, <br /> <br />Additional review of existing hydrologic data will be used <br />to analyze long-term impacts in the EIS. <br /> <br />Method <br /> <br />Data were collected by interviewing anglers, fishing and <br />rafting outfitters, area business owners, rafters, State and <br />Federal employees, and others, Area business owners and <br />others interviewed were asked to complete questionnaires, <br />few of which were returned. <br /> <br />HYDROPOWER <br /> <br />Outcome <br /> <br />The hydropower generating unit is owned and operated by <br />the City of Farmington. The unit has averaged 15.4 mega- <br />watts (MW) daily power generation capacity since it was <br />installed in 1989. It was initially designed to provide <br />optimum power generation at release flows of 1,000- <br />2,000 cfs, <br /> <br />The generating unit at Navajo Dam experiences cayitation at <br />flows below 350 cfs. Cavitation-caused damage noted after <br /> <br />Summer Low Flow Test Report - April 2002 <br /> <br />-19- <br />o Q5':9 9 <br />