Flooding and streamflow in Utah during water year 2005

During water year 2005, new historic maximum discharge records were set at streamflow- gaging stations on the Santa Clara River at St. George; Virgin River near Bloomington; Little Bear River at Paradise; Mammoth Creek near Hatch; and Sevier River at Hatch. New total annual discharge records were set at Whiterocks River near Whiterocks; North Fork of the Virgin River near Springdale; Virgin River at Virgin; Santa Clara River at St. George; Virgin River near Bloomington; Mammoth Creek near Hatch; Sevier River at Hatch; and Coal Creek near Cedar City. New peak instantaneous discharge records were set on the Santa Clara, Virgin, and Little Bear Rivers as a result of locally intense rainfall events. The record peak discharges set on Mammoth Creek and the Sevier River were the result of snowpacks that were substantially greater than normal. The total annual discharge records for all of the stations were the result of greater-than-normal precipitation during the winter of 2005 caused by a weak El Nino event.