FGUS65 KSTR 051605 ESGNM TTAA00 KSLR DDHHMM NATIONAL WEATHER SERVICE COLORADO BASIN RIVER FORECAST CENTER SALT LAKE CITY UT June 5, 2007 INTERNAL NWS PRODUCT FOR GUIDANCE PURPOSES ONLY SAN JUAN RIVER BASIN SPRING FLOOD POTENTIAL OUTLOOK The 2007 spring runoff flood potential is not high at this time for streams and rivers throughout the San Juan River Basin. The observed water year precipitation to date is around 100% of average. Snow water equivalent as of June 1 was 50% in the Upper San Juan, 30% in the Animas, and 40% for the entire San Juan Basin. It is important to note that the spring flood threat due to runoff will largely be determined by hydrometeorologic events that occur during the next month. Peak flows for four selected points are as follows: 2006 2007* River/Site Peak/Date Peak/Date Normal Peak Historic Peak CFS CFS Period CFS ___________ _________ _________ ___________ ____________ San Juan - 1420, 5/21 1920, 5/15 5/15 - 6/12 4640 Pagosa Springs Animas - 3140, 5/25 3440, 5/16 5/28 - 6/14 10700 Durango Animas - 3130 5/25 3470, 6/04 5/31 - 6/15 11000 Farmington San Juan - 7070, 6/09 7250, 5/18 5/21 - 7/04 15600 Bluff * Preliminary peaks CBRFC/tjc NNNN $$