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Figure 12. Relationship between the March-May MEI and the number of days with 0.10" of <br />precipitation or greater in the May 1- Sept 15 period. <br />E - Stream flow (April – September) <br />For this critical component of the hydrological cycle, the District boundaries were <br />not so much adhered to as there was a HCI-stream flow analysis of the three major <br />drainages in this District. The stream gage points that were analyzed were the San Juan <br />River at Pagosa Springs, the Animas at Durango and the Dolores River at Rico. All of <br />these rivers do not effectively ‘merge’ in the Colorado River system until they have left <br />the state boundaries and were analyzed separately. <br />San Juan at Pagosa Springs <br />An analysis of the leading mode HCI relationships do indicate that the ENSO <br />HCI’s maintain a general El Nino – more runoff/ vice versa relationship. However, the <br />AMO was a statistically more robust relationship than the ENSO variable. The initial <br />thought is to this is that El Nino years still have a higher level of scatter in parts of the <br />Figures 1516 <br />relationship. Examples of this relationship are presented in and . <br />23 <br />