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Last modified
1/26/2010 2:24:03 PM
Creation date
10/12/2006 1:50:25 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8111.831
Description
Arkansas River Compact Administration - Article VIII Investigations
Basin
Arkansas
Date
1/1/1985
Author
David Pope
Title
Report to the ARCA regarding Article VIII (H) Investigation of Alleged Violations of the Arkansas River Compact
Water Supply Pro - Doc Type
Publication
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<br />'1 <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />16 <br /> <br />constant of proportionality. The slopes of the usable stateline <br /> <br />flow double mass diagrams (sets 3, 5 and 9) indicate a decline for <br />the eleven year period of 1974-1984 to approximately 60% of the <br />slopes for the 25 year period of 1949-1973 slopes, The slopes for <br />the eleven year period are somewhat increased by the large flows <br />of 1983 and 1984. The slope of the diagram expressing the rela- <br />tionship of annual flows of the Arkansas River at Las Animas to <br />adjusted Canon City flows (set 4) shows a fairly constant slope <br />over the entire 36-year post-compact period. This indicates that <br />the depletions to annual stateline flows occurring since 1974 have <br />been below the Las Animas gage. This is not the case for the win- <br />ter flows at Las Animas, where a decline in slope has occurred <br /> <br />starting in the 1970's, <br /> <br />The ratios of annual usable stateline flows to the adjusted flows <br /> <br /> <br />at Las Animas and Canon City were also computed, The ratios pro- <br /> <br /> <br />vide additional information about the consistency of the relation- <br />ship between the two locations. Table 13 shows the average annual <br /> <br /> <br />ratios of usable stateline flows to Adjusted Canon City flows, <br /> <br /> <br />index flows, and John Martin Reservoir inflows, In each instance, <br /> <br /> <br />the ratios increased for the post-compact period of 1949-1973, but <br />declined dramatically for the period of 1974-1984. <br /> <br />A comparison of the relationship of flows for different time <br /> <br /> <br />periods can be made by using the average of the annual ratios of <br /> <br />;.~ <br />
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