Laserfiche WebLink
G — Bi- seasonal HCI Relationships <br />December -March Precipitation <br />For all of the Districts the single - seasonal relationship between the AMO and <br />ENSO indices that have been discussed numerous times in this report still remain with <br />the AMO being the apparently most robust relationship of the group. The AMO, SOI and <br />MEI should be consulted for guidance for two -year wintertime precipitation values. <br />April- September <br />The spring precipitation (two -year) relationships are very similar in nature to the <br />Dec. -March period with some variability with respect to District. The user is directed to <br />this section for guidance. <br />Seasonal (Apr -Sept) runoff <br />The AMO continues to demonstrate a very tangible value in the hydrology of the <br />basins of Division 7. Simply put, if one is interested in the potential for bi- seasonal <br />runoff, a user may wish to consult the AMO values exclusively for direction as to how to <br />assess the runoff from two consecutive peak years. ENSO still has a non - random impact <br />on the basins and could be consulted to potentially refine the product. An example of this <br />robust relationship can be found Figure 17. <br />Figure 17. Relationship between the July -Nov. AMO vs. the Apr. - Sept. naturalized stream flow for <br />the San Juan River at Pagosa Springs for the following two consecutive years. <br />JUL-NOV AMO vs. April- September Naturalized Bi- Seasonal Streamflow (KAF) for the <br />San Juan River at Pagosa Springs <br />N <br />♦ <br />o <br />• o <br />- <br />a <br />c <br />• • <br />4 <br />♦ ♦ ♦ <br />♦ <br />-0.50 -0.40 -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 0.40 0.50 0.b0 <br />,JUL-NOV AMU Value <br />