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<br />' of floodflows. Rain on snowmelt floods result from the augmentation of already high snowmelt <br />flow volumes by the added runoff of rainfall. These types of floods can be characterized by the <br />' already moderate peak flows of snowmelt flooding followed abruptly by a short duration high <br />flow. Historically, snowmelt has caused the greatest flooding around Delta and Grand Junction <br />with augmentation from rain adding to some historical peak flows. The largest known snowmelt <br />flood on the Gunnison River was on July 2, 1884 with an estimated flow at Grand Junction of <br />50,000 cfs. Other significant flood events occurred in 1920, 1921, 1957, and 1984. The 1984 <br />flood was at a frequency of slightly less than once in 50 years. <br />1 <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br /> <br />