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FLOOD04169
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Last modified
1/25/2010 6:45:31 PM
Creation date
10/5/2006 12:23:38 AM
Metadata
Fields
Template:
Floodplain Documents
County
Statewide
Community
Salt Lake City
Stream Name
Big/Little Cottonwood and Jordan Creeks
Basin
Statewide
Title
The Wasatch Fronts Century Storm
Date
9/26/1982
Prepared For
CWCB
Prepared By
NWS
Floodplain - Doc Type
Flood Documentation Report
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<br />-4- <br /> <br />By Monday, September 27, the critical nature of the situation was <br />noted as Governor Matheson of Utah declared a State of Emergency in Salt Lake <br />County at noon. The Utah National Guard responded by 4:00 P.M. Nonday after- <br />noon with flood relief and filling sandbags. <br /> <br />The upper level trough over Utah continued to provide impulses that <br />triggered additional precipitation into Tuesday, September 28. Flooding was <br />still a problem along the Jordan River into Tuesday as the added rainfall <br />enhanced the situation. The high water table in the lower portions of the <br />valley was beginning to cause misery to homeowners. The sewage systems in <br />Murray, Rose Park, and West Valley City were becoming taxed to their capacity <br />with people encouraged to conserve waste water. The Utah National Guard was <br />released at 8:20 P.M. Tuesday evening, September 28. <br /> <br />By Tuesday night, September 28, the record rains had subsided some <br />with rainfall amounts along the Wasatch Front from Davis County southward <br />into Utah County generally averaging 3 to 4 inches, but in the central and <br />southeast portion of the Salt Lake Valley between 5 and 6 inches. A few <br />areas on the southeast bench, such as the Olympus Cove area, recorded 6.59 <br />inches precipitation, Sandy 6.40 inches, and the Alta Ranger Station in <br />Little Cottonwood Canyon 7.91 inches. <br /> <br />Showery rainfall continued in the flooded areas through Thursday, <br />September 30. <br /> <br />As September came to a close, record monthly rainfall amounts were <br />logged with an unprecedented 7.04 inches recorded at the Salt Lake Airport, <br />which was 1,035 percent of the 30-year normal precipitation. The wettest <br />month ever at the Airport was 4.90 in April 1944. September rainfall amounts <br />logged in the southeast portion of the Salt Lake Valley were over 9 inches in <br />a few locations. <br />
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