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PROJ00229
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PROJ00229
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Last modified
11/19/2009 11:43:12 AM
Creation date
10/5/2006 11:44:50 PM
Metadata
Fields
Template:
Loan Projects
Contract/PO #
C153512
Contractor Name
Summit County
Water District
0
County
Summit
Bill Number
XB 99-999
Loan Projects - Doc Type
Contract Documents
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<br />. <br /> <br />,- <br /> <br />... <br /> <br />~ <br /> <br />I <br /> <br />..... <br /> <br />'<IIIl <br /> <br />'<IIIl <br /> <br />~ <br /> <br />.~ <br /> <br />~. <br />.. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />I <br /> <br />. <br /> <br />. <br /> <br />, <br /> <br />. <br /> <br />. <br /> <br />Small Reservoir Feasibility Study <br /> <br />5-9 <br /> <br />Reservoir Levels <br /> <br />. Dillon Reservoir levels are unchanged between Scenarios II and III, but are lowered <br />by negligible amounts during runoff months by the increased Peru Creek operations <br />depicted in Scenario N. <br /> <br />Peru Creek Reservoir remains substantially full in many years (those when few <br />releases are required) and fills in two out of every three years, The maximum annual release <br />over the study period was 2200 AF, indicating that a facility smaller than 4650 AF could be <br />considered. Average annual evaporation is approximately 70 AF for the 4650 AF facility. <br /> <br />Exoort Levels <br /> <br />Levels pf transmountain diversion are un<.:hanged in Scenarios III and N from those of <br />the baseline scenarios. <br /> <br />CONCWSIONS AND RECOMMENDATIONS <br /> <br />The following general conclusions can be drawn from the baseline analyses carried <br />out in the basin study: <br /> <br />1. With respect to water supply, most County water users appear <br />to have adequate water rights and augmentation plans to <br />meet their projected ultimate:: demand levels. Strict <br />interpretation of and adherence to the USBR's Green <br />Mountain minimum storage targets could induce some <br />shortages in auginentation re::leases from the Sales Pool and a <br />few users show ultimate demands slightly in excess of their <br />decree limits. Although subatantial shortages are indicated at <br />the Climax mine, their use of recycled water from tailings <br />ponds was not modeled so shortages there may be <br />overstated. Minor shortages to snowmaking demands on the <br />Snake River and West Tenmile Creek are induced by instream <br />flow requirements. Straight Creek will not be able to provide <br />the entire ultimate water supply demand of Dillon and Dillon <br />Valley. <br /> <br />2. With respect to instream flows, the negotiated agreements <br />generally appear adequate to protect minimum stream <br />conditions without significant impact on other water users. <br />Flows on the Snake River below the North Fork are routinely <br />below the 6 cfs decreed instream flow under ultimate <br />demand conditions. During the fall and winter and flows <br />below Dillon fall below 50 cfs about once every 6 years. <br />Deficiencies below Dillon in the fall and early winter are <br />exacerbated by exchanges for upstream snowmaking use. <br />The use of a monthly time step in the basin model masks <br />instream flow deficiencies of less than a month's duration. <br />
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