Ice dams clog Allegheny River in Armstrong, Clarion, Venango counties
An ice dam around Parker in Armstrong County was flooding Kittanning Pike as far upriver Clarion County, but another plug of river ice in Oil City had yet to cause problems in Venango County on Sunday, authorities said.
Kittanning Pike, also designated as Route 268 and North River Avenue, was closed between Foxburg and Parker because of the Allegheny River rising behind an ice dam that formed around Parker, according to Clarion County dispatchers. Another ice dam upriver in Oil City was not causing any flooding, according to Venango County 911 supervisors.
Forecasters at the National Weather Service office in Moon said it was extremely difficult to predict when flooding from ice dams would subside, because the dams have to break up before water levels can fall.
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