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<br />what the releases for a given year will be. The amount of spring runoff to be
<br />released for the study will vary among years, but the test flows should
<br />provide a peak in the Gunnison River (measured at the USGS gage near Grand
<br />Junction ) of between 2,000 and 5,000 cfs for one year, between 5,000 and
<br />10,000 cfs for one year, above 12,000 cfs for two years, and above 15,000 for
<br />one year. Runoff should increase and decrease in a gradual, natural manner
<br />and should peak between May 15 and June 15. The peak should be timed to
<br />correspond as closely-as possible with the peak of the Colorado River. Test
<br />flows (mean-monthly flows) for the remainder of the year are as follows:
<br />Jan Feb Mar Apr May Jun
<br />700 700 700 900 3,000 2,000
<br />900 900 1,000 1,500 4,000 3,500
<br />1,100 1,100 1,300 3,000 6,000 5,000
<br />1,300 1,300 1,800 5,000 8,000 6,500
<br />1,700 1,700 2,200 7,000 10,000 8,000
<br />Jul Aug Sep Oct Nov Dec
<br />1,000 1,000 1,000 700 700 700
<br />1,400 1,300 1,000 900 900 900
<br />1,900 1,700 1,300 1,100 1,100 1,100
<br />2,500 2,100 1,600 1,300 1,300 1,300
<br />3,000 2,500 2,000 1,500 1,500 1,500
<br />3,000 2,500 2,000 1,500 1,500 1,500
<br />The proposed test flows have all occurred during the last ten years.
<br />However, the test flows represent a range that more closely represents the
<br />natural hydrograph of the river--with the requested fall, winter, and summer
<br />flows taken from the lower end of the observed range and the requested spring
<br />flows on the high end of the recent range. As mentioned above, flows will be
<br />measured at the USGS gage near Grand Junction, so releases from Aspinall
<br />should be coordinated with flows in other streams. The test flows are
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