On July 25th 1999 a portion of the Saguache Creek basin located northwest of the town of Saguache Colorado experienced a localized yet intense period of rainfall. Heavy rainfall flooded Saguache Creek and its tributaries both north and south of Highway 114. The resultant flash flooding washed out roads and bridges along with the inundation of crop and rangeland located in and along these flooded tributaries. The purpose of this report is to document the meteorological causes, reconstruct the estimated spatial coverage, temporal duration, and rainfall depth of the thunderstorm complex that produced the flash flood.