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<br />V. A. Sperling, Esq. <br />June 1, 2007 <br />Page 2 <br /> <br />AVAILABLE STEAMFLOW <br /> <br />Using the data provided by the ewes, we have summarized the number of days <br />in which the model indicates there would be no availa!:>le streamflow at the Durango <br />gage. This information is presented in the enclosed Table 1. As shown in this table, <br />there wouid be no streamflow available for new water rights an average of 21 percent of <br />the days. Periods of unavailable streamflow have occurred during every year of 1975 <br />through 2C03. according to the model. In other words, the streamflow data provided by <br />t:1e ewcs indicates the Animas River is already over-appropriated and water crit:cal. <br /> <br />The modeled streamflows do not account for the demands of condi~io:la! water <br />rights. ~ncl:.lding the Animas-La Plata ProJect (ALP) presently under constru~io:l. In this <br />respect, tr,e amount of available streamflow wiil decrease as ~he ALP project is <br />completed and other condi~ional water rights are developed. <br /> <br />, <br /> <br />BASELINE STREAMFLOW <br /> <br />Comparison with Historic Streamflow - We have prOduced p!o:s that compare <br />the Base~ine daiiy streamflow from the mocel with the historic caily streamflow recorded <br />at the Durango gage. Plots were developed for the following years to provide a <br />representative comparison sample of the Baseline and historic streamf:ows. <br /> <br />Year Rank' . <br />:2002 Driest 1 <br />:2003 . 4 Driest <br />1996 5" Dries: <br />1998 Median I <br />1979 ! 5: Wettest . <br />1997 . Wettest , <br />-Sase::! 01 historic annual flow at ~he Durango i <br />.,. ,.. <br /> <br />i gage ~unng 1975 tn-olJo;;jh "OC3_ <br /> <br />Plots o~ the other years during the 1975 through 2003 study period would De similar in <br />character to the years listed above that we have plotted and enclosed w!th this letter. <br />