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Water Supply Part 4: Water Utilization Narrows Unit Draft
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Water Supply Part 4: Water Utilization Narrows Unit Draft
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Last modified
7/20/2010 3:34:25 PM
Creation date
6/29/2010 1:16:07 PM
Metadata
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Template:
Water Supply Protection
Description
Narrows Reservoir
State
CO
Basin
South Platte
Water Division
1
Date
1/1/3000
Title
Water Supply Part 4: Water Utilization Narrows Unit Draft
Water Supply Pro - Doc Type
Report/Study
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increased i:iportations to 54,800 acre -feet annually until the year <br />2000. The completion o" tho Blua -South Platte Project is also many <br />years in the future. Thus from the stand,00int of pro f act o_)eration <br />until the future transmountain dierarsio-tg by both the Blue -South Matto <br />project and the city of Denver are com ?leted, a reservoir of 825,000 <br />acre -feet capacity at Narrows is indicated as necessary from tho stand- <br />point of providinG a 17 11 water supply to currently irrigated lands. <br />The ,summary of operation studies based on historical -Tows, in- <br />oreased flow from the Colorado -Big Thompson ''roject, increased flo"vs <br />from the Blue- South ^latt3 ?rojeot, and four reservoir sizes at Narrows <br />is shown in table 2. Pith the adclition of inoroas-ed inflows from the <br />Blue- .";puth "latte ?rojeot, a reservoir of :/nly 475,000 acr3 -feet is <br />adequate to meet Project water requirenents. The maximum shortage is <br />1_".1 ;3rcent ir, 1 with a maximun, eaccluaulative shortage of 55.4 p3r- <br />cant for the ;period 1936 -1940. <br />If a reservoir of 525,000 acre -feet capacity is used at Narrows <br />together with 20,000 acres of paw land and increased flows from the <br />Colorado -Nis Thompson and Blue -South Matte Projects, the shortages <br />are those listed under Operation No. 5 in table 2. On currently <br />irrigated land the maximum shortage is 16.7 percent in 1940 with an <br />accumulativ€, shortage of 51.9 percent for the ,years 1934 -1541. This <br />is an adequate water supply. On new land the maximum annual shortage <br />is 55.6 percent in 1940 with an accumulative shortage of 78.6 percent <br />for the period 1938 -1941. The large shortage in 1940 is due to the <br />fact that flows were so low in 1:40 that water could not have been <br />stored in Narrows �?eservoir. These shortages could not have been <br />14 <br />
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