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WSP03194
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Last modified
1/26/2010 12:49:07 PM
Creation date
10/11/2006 11:36:14 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8443
Description
Narrows Unit
State
CO
Basin
South Platte
Water Division
1
Date
3/1/1976
Author
US Geo Survey
Title
Simulated Effects of the Proposed Narrows Reservoir on the Water-Table Aquifer Morgan County Colorado
Water Supply Pro - Doc Type
Report/Study
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<br />}\I.~. ;< <br />--=,............', <br />, <br />I loc" hOlel <br />, <br />, <br /> <br />~ <br />IIG,':~ <br />Dt!J':QW'".;'"1~ <br />~ (Clear he! ~) <br /> <br />040S <br /> <br />The water-table surface computed by the model is shOlm on figure 2. <br /> <br />Ground-watet inflow to the study area was computed to be 174 ft3/s <br />3 3 3 <br />(4.93 m Is) of which 134 ft Is (3.79 m Is) enters across the southern <br /> <br />aquifer boundary. Evapotranspiration from the study area was computed <br />~ <br /> <br />to be 26 ft3/s (0.74 m3/s). Ground-water discharge to the South Platte <br /> <br /> <br />River above the proposed dam was computed to be 78 ft3/s (2.21 m3/s) of <br /> <br /> <br />which 38 ft3/s (1.08 m3/s) enters the river along the proposed reservoir <br /> <br />site. Ground-water discharge along the reach of the South Platte River <br /> <br />below the proposed dam, including Bijou Creek, was computed to be 34 ft3/s <br />3 ' 3 . 3 <br />(0.96 m Is) above Fort Morgan and 22 ft Is (0.62 m Is) below Fort Morgan. <br /> <br />The difference in altitude between the computed and published water <br /> <br />levels (Hurr and others, 1972a, 1972b) is shown on figure 3. <br /> <br />The maxi- <br /> <br />muill clifftr~uce i~ w~t~r-lcv~l altituue ls 20 [t <br /> <br />I r. , . . ~ <br />\,U.l ill) ..U.I. LJii..:. <br /> <br />v l.Li..I1.Lly <br /> <br />of Fort Morgan where municipal pUIDpage occurs. The algebraic average <br /> <br />difference is less than 2 ft (0.61 m) over the study area. Differences <br /> <br />between the computed and measured water levels were expected because <br /> <br />adequate data were not available to simulate recharge from irrigation <br /> <br />and pumpage by wells. Data-collection activities required to obtain the <br /> <br />necessary data were outside the scope of this study; therefore, ground- <br /> <br />water discharge rates to the South Platte River computed by the model <br /> <br />are questionable. However, computed changes in discharge, resulting <br /> <br />from the simu:ated reservoir, should be representative of actual changes <br /> <br />for steady-state conditions. <br /> <br />Ie, <br />
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