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WSP08349
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Last modified
1/26/2010 2:47:50 PM
Creation date
10/12/2006 2:55:23 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8407
Description
Platte River Basin - River Basin General Publications
State
CO
Basin
South Platte
Water Division
1
Date
12/6/1995
Author
USGS
Title
Quantity and Quality of Ground-Water Discharge to the South Platte River - Denver to Ft Lupton - Colorado - August 1992 through July 1993
Water Supply Pro - Doc Type
Report/Study
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<br /> McKay Road <br /> 10 <br />Z 0 wel11A <br />w <br />(!) 8 0 0 0 wel11B <br />0 <br />0:: .fs, /::, wel12A <br />!:: ., <br />Z 6 ., 0 ., ., wel12B <br />en .@ 0 ~ B <br /><( /::, <br />0:: 4 <br />w 0 <br />f- <br />:J 2 /::, <br />0:: /::, <br />W <br />0- <br />en 0 <br />::!: Henderson <br /><( <br />0:: 10 <br />(!) <br />:J <br />...J 8 <br />~ <br />Z <br />:;f 6 <br />=> <br />Z 4 /::, <br />0 <br />::!: <br />::!: 2 /::, ~ <br /><( <br />0 0 <br />w <br />~ Road 8 <br />0 <br />en 10 <br />en <br />15 <br />u- 8 <br />0 <br />Z <br />0 6 <br />~ <br />0:: 4 <br />f- <br />Z <br />w <br />U 2 <br />Z ., ., ., <br />0 ., /::, <br />u 0 <br /> 8/1/92 10/1/92 12/1/92 2/1/93 4/1/93 6/1/93 8/1/93 <br /> DATE <br />Figure 10. Concentrations of dissolved ammonium in water from wells at McKay Road, Henderson, and Road 8. <br /> <br /> <br />concentrations in the river and in ground water from <br />the INIB wells at Henderson and Road 8, regardless <br />of the difference in hydraulic head betweel) ground <br />water and surface water (fig. 15). These data indicate <br />that sediments in the small-area flow system were a <br />sink for DO in water discharging to the river from the <br />large-area flow system and for surface water infiltrating <br />into the bed sediments. <br /> <br />The fact that sediments in the small-area flow <br />system were aJlink for DO indicates that a source of <br />organic carbon was available to micro-organisms in the <br />small-area flow system that was not available to micro- <br />organisms in the large-area flow system. Comparison <br />of the organic-matter content in sediments from the <br />monitoring-well sites at Henderson and Road 8 with <br />the organic-matter content in bed sediments at those <br /> <br />sites indicates that there was not a substantial differ- <br />ence in the amount of solid organic matter between the <br />sediments (table 5). An exception to this was the gen- <br />erally higher organic-matter content of bed sediment~ <br />at the sediment/water interface compared to sediments <br />below the interface or compared to aquifer sediment <br />below the water table adjacent to the river, These data <br />indicate that solid organic matter may not be the main <br />source of organic carbon used by micro-organisms <br />below the sediment/water interface to reduce DO in the <br />small-area flow system. A more likely source of the <br />organic carbon was dissolved or suspended organic <br />carbon introduced into the small-area flow system from <br />the river. Concentrations oftotal organic carbon in sur- <br />face water were greater than concentrations in ground <br />water below the sedimentlwater interface (fig. 16), <br /> <br />24 Quantity and Quality of Ground-Watar Dlach8rga to tha South Platta Rlv8r, Danvar to Fort LUpton, Colorado, <br />Auguat1992 Through July 1993 I <br />
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