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Last modified
11/23/2009 1:21:38 PM
Creation date
10/4/2006 9:23:56 PM
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Floodplain Documents
County
Larimer
Community
Fort Collins
Title
An Analysis of Rainfall for the July 28, 1997 Flood in Fort Collins
Date
2/1/1998
Prepared For
State of Colorado
Prepared By
CSU
Floodplain - Doc Type
Flood Documentation Report
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<br />June 3-4, 1949 <br /> <br />3.54 inches in one day, <br /> <br />3.73 inches in two days <br /> <br />Rain began on the 3rd and appeared to be widespread and fairly steady with maximum <br />rainfall rates during the day on the 4th, but not vel)' intense. Maximum two-hour rainfa1l <br />from recording gauge was only 0.74 inches suggesting a soaking rain with little or no flash <br />flood potentia1. No information was obtained concerning rainfall amounts elsewhere near <br />Fort Collins, but all of northeastern Colorado received beneficial rains. <br /> <br />August 3-4, 1951 <br /> <br />3.06 inches in one day, 6.07 inches in two days <br /> <br />Vel)' heavy rains began around 7 p.m. on August 2 dropping 1.25 inches in an hour. Rains <br />then diminished but continued steadily overnight until about 9 a.m. on the 3rd. Then, on <br />the evening of the 3rd, an even more intense stonn struck approximately 8-11 p.m. <br />dripping 1.62 inches in one hour, 2.59 inches in two hours, and a total of3 inches injust <br />over 3 hours. Flooding occurred in Fort Collins from this rainstonn. There was evidence <br />of potential even heavier rains west of Fort Collins. Fatalities were reported from flooding <br />near Bellvue and also in Buckhorn Canyon. <br /> <br />May 12-13, 1961 <br /> <br />3.21 inches in one day, 3.66 inches in two days <br /> <br />This was a strong winter-like stonn which produced widespread heavy precipitation but <br />without the intensity required to produce flash floods. Heavy rain began around 6:20 p.m. <br />on the 12th and continued into the 13th changing to snow late in the day. In all, 3.85 <br />inches of moisture fell on campus in about 32 hours. No information on precipitation <br />amounts elsewhere in the Fort Collins area was obtained. <br /> <br />August 19, 1961 <br /> <br />2.58 inches in one day <br /> <br />A brief but very intense stonn struck Fort Collins on the evening of August 18th dropping <br />2.58" of rain in about 90 minutes. No additional information on rainfall patterns <br />elsewhere in the Fort Collins area was obtained. <br /> <br />June 15-16, 1963 <br /> <br />2.69 inches in one day, 3.04 inches in two days <br /> <br />Moderate afternoon showers on June 15th gave way to widespread, heavy but not <br />particularly intense cool rains. 2.69 inches fell between 9 p.m. on the 15th and 1:30 p.m. <br />on the 16th on campus. No additional information on rainfall patterns elsewhere in the <br />Fort Collins area was obtained. <br /> <br />53 <br /> <br />l <br />
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