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Last modified
1/26/2010 12:12:52 PM
Creation date
10/11/2006 9:31:58 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8143.700
Description
John Martin Reservoir - Water Sales - Contracts
Basin
Arkansas
Water Division
2
Date
1/1/1980
Title
Evaluation of the 1979 Agreement - preliminary
Water Supply Pro - Doc Type
Report/Study
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<br />C) <br /> <br />River flow was usually released from the reservoir along <br />with conservation pool releases. In making Chart VI, the daily <br />release demand was subtracted from the daily reservoir outflow <br />giving an estimate of river flow. This was then averaged for <br />the event. When the total outflow was less than the average <br />combined release demands, river flow was considered to be zero. <br />River flow ranged from 0 to 2, year cfs. There is no correlation <br />between river flow and reservoir content. River flow was used <br />to assest delivery of Kansas' water to the state line as well <br />as for irrigation purposes by district 67 (through decreed <br />priorities). <br /> <br />..... <br />U1 <br />c.n <br />.;.. <br /> <br />5~mmary and Hecommendations. <br /> <br />PRELUHNARY <br /> <br />Based on the preceeding analysis the following recommendations <br />~re m~de for the transfer of water into accounts. .-. <br /> <br />1) The large standard deviations for all the means refect <br />the wide scope in daily release demands. When standard deviations <br />~lrc tl)is large tJle means loose their statistical significance. <br />Therefore, it is suggested that the medians or the modes be <br />used as transfer rates. <br /> <br />2) The median for the combined release of winter storage water <br />was 882 cfs; the mean was below this: 790 cfs with a 34% standard <br />deviation. There were some very low demands that lowered the <br />mean and increasec the standard deviation. Therefore, it is <br />suggested that the median of 900 cfs be used as a transfer rate. <br />The mode was 1000 cfs representing 16% of these rates) and, <br />as was already pointed out, 50% of the time the reservoir was <br />drained at a rate exceeding 900 cfs. 50, a higher transfer rate <br />may be preferred. <br /> <br />3) The transfer of conservation pool water into accounts <br />during the summer storage period should begin within 24 hours <br />of the commencement of storage, unless there is heavy precipi- <br />tation in the area that would normally delay the need for water. <br />In this instance transfer should begin whenever District 67 and <br />Kansas request water. <br /> <br />- <br /> <br />4) The combined transfer should be at the historic median <br />or greater. The median of the combined release rates was 820 <br />cfs but the median of Colorado alone was 500 cfs and of Kansas <br />alone 400 cfs~ Water was called at the maximum rate of 1000 <br />cfs 27% of the time. The discrepancy between these two combined <br />medians (820 cfs vs. ,900 cfs) are probably caused by Kansas' <br />failure to call for water whenever Colorado did. In either <br />case, the combined transfer was not at 1000 cfs, the maximum <br />permissable rate. The parties involved might decide on a <br />transfer rate between 820 & 900 cfs. <br />
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