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Roaring Fork: <br />There is a relatively strong connection with ENSO in this basin with respect to the <br />Eagle or Upper Colorado basin. Strong El Nino /La Nina variables hold some value in <br />this area. <br />Gunnison: <br />The PDO combined with the SOI are stronger relationships that can be used <br />potentially in tandem to provide guidance. <br />Uncompahgre: <br />The SOI provides the best usage of the HCI variables to gain a handle on the <br />potential for 2 -year spring precipitation. If uncertainty exists, one might examine the <br />PDO for further guidance. <br />White: <br />According to some of the data, the ENSO index might provide some guidance for <br />this area. However, after examining the one -on -one relationships, there appears to be <br />minimal guidance offered for 2 -year precipitation in the basin. <br />Yampa: <br />According to some of the data, the ENSO index might provide some guidance for <br />this area. However, after examining the one -on -one relationships, there appears to be <br />minimal guidance offered for 2 -year precipitation in the basin. <br />Table 11. Summary of Apr. -Jun. Multi (2 -year) Precipitation/HCI Relationships for the <br />Colorado /Gunnison/Yampa -White basins (dark `X' indicates a relatively strong relationship and <br />light 'X' indicates a relatively weak relationship). <br />37 <br />PDO <br />MEI <br />SOI <br />Nino 3.4 <br />NAO <br />AMO <br />Upper Colo. <br />X <br />Middle Colo. <br />X <br />Eagle <br />X <br />X <br />Roaring Fork <br />X <br />X <br />Gunnison <br />X <br />X <br />Uncompaghre <br />X <br />X <br />White <br />Yampa <br />37 <br />