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<br />12 18 24
<br />JUN 09/HCJ.RS
<br />PLACHECO/OISCHRG
<br />PLAOENCO/OISCHRG
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<br />PLASPLCO/DISCHRG
<br />PLA~ATCO/DISCHRG
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<br />1987
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<br />JUN 09/HCJ.RS
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<br />PLAJURCO/DISCHRG
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<br />PLA8ASCD/DISCHRG
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<br />CDORDINATION OF ADMINISTRATION DF THE
<br />SOUTH PLATTE RIVER IN DIVISION I
<br />
<br />24
<br />
<br />The Division 1 Engineer administers water rights over
<br />a large geographic area that includes 12 separate adminis'
<br />trative districts. To be effective, an up-ta-date knowl-
<br />edge of the river conditions throughout the South Platte
<br />River basin is essential. With the flow information on
<br />each tributary and at various locations on the mainstem of
<br />the South Platte River. the Division Engineer can coordi-
<br />nate administration between districts. As an example, the
<br />system provides information on the status of major diver-
<br />sions in District 2 to compare that with the amount of
<br />water available in the upstream areas to detenmine what
<br />adjustments need to be made to Chatfield Reservoir
<br />releases in order to satisfy the senior rights below the
<br />reservoir. The system provides information used to
<br />monitor reservoir releases to ensure that the water is
<br />reaching its proper destination.
<br />
<br />The hydrograph shown in the upper left plots real-
<br />time discharge data for four upper South Platte River
<br />basin stations. South Platte River at South Platte
<br />(PLASPLCO). South Platte River below Cheesman Reservoir
<br />(PLACHECO). South Platte River at Waterton (PLAWATCO). and
<br />South Platte River at Denver (PLADENCO), for June g.
<br />1987. The flow at PLASPLCO (upstream station) increased
<br />steadily from about 1500 cfs to 1900 cfs during the
<br />24-hour period while the flow at PLAWATCO increased from
<br />about 1000 cfs to 2200 cfs between 0800 to 1300 hours.
<br />This indicates that an additional 800 cfs came from
<br />releases from Strontia Springs Reservoir, curtailment of
<br />diversions by Denver through the Highl;ne Canal and Denver
<br />Pipeline, or both. Flow at PLADENCD was unsteady ranging
<br />from 18DO cfs to 4600 cfs. As the release from Chatfield
<br />Reservoir. measured at PLACHECO, amounted to approximately
<br />10DO cfs. flow at PLADENCO was primarily the result of
<br />unsteady flow from Cherry Creek and urban runoff.
<br />
<br />The hydrograph shown in the lower left plots real-
<br />time discharge data for four lower South Platte River
<br />basin stations, South Platte River at Henderson
<br />(PLAHENCD). South Platte River near Kersey (PLAKERCO),
<br />South Platte River near Weldona (PLAWELCO). and South
<br />Platte River at Julesburg (PLAJURCO). for June g, 1987.
<br />The flow at PLAHENCO increased from approximately 2500 cfs
<br />to 12.500 cfs between OODO to 03DO hours. The hydrograph
<br />shows that this water began to reach the downstream
<br />station PLAKERCO at about 16DO hours.
<br />
<br />Alan Berryman, Division 1 Engineer
<br />
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