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<br />Basinwide Conditions Assessment
<br />The SWSI value of 0,6 indicates that for June the
<br />basin water supplies were near normal. Reservoir storage,
<br />the major component in this basin in computing the SWSI
<br />value, was 90% of normal as of the end of May, Cumulative
<br />storage in the major plains reservoirs: Julesberg, North
<br />Sterling, and Prewitt, is at 86% of capacity, Cumulative
<br />storage in the major upper-basin reservoirs: Cheesman,
<br />Eleven Mile, Spinney, and Antero is at 98% of capacity.
<br />Flow at the gaging station South Platte River near Kersey
<br />was 576 cfs, as compared to the long-term average of 3,498
<br />cfs. Flow at the Colorad07Nebraska state line averaged 224
<br />cfs,
<br />The generally dry and warm conditions continued
<br />through June. Unlike many years, there was not a
<br />significant snow runoff during June, with stream flows well
<br />below historic averages, As a result, there were calls on the
<br />river during the whole month of June, which is unlike
<br />average years when a free river exists during a portion of the
<br />month. Well timed rain did help keep the call off the South
<br />Platte downstream of Greeley during a portion of the month
<br />which allowed for continued recharge along the South Platte
<br />and continued storage along the tributaries, However; by the
<br />end of the month there were senior irrigation calls along the
<br />whole length of the South Platte,
<br />
<br />Outlook
<br />Stream flow conditions this summer should be
<br />helped by the fact ,that the major reservoirs on both plains
<br />and tributaries were able to fill this year, and the fact that
<br />there was considerable ground water .recharge along the
<br />South Platte during the spring, These items will help to
<br />assure an adequate irrigation supply later in the year even if
<br />there is not significant precipitation during the rest of the
<br />summer, Municipal supplies remain in generally good
<br />condition due to adequate reservoir storage and drought
<br />planning, However, isolated physical shortages may occur
<br />in some basins, as occurred last year,
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