Sean C. Morgan
An extraordinarily large rainstorm caused a series of landslides along Highway 20 east of Cascadia and overloaded the city’s wastewater treatment plant over the weekend.
Some parts of Oregon received more than 6 inches of rain, including 8 inches recorded at Mapleton. At Foster Dam, the U.S. Army Corps of Engineers recorded 2.72 inches Saturday and Sunday.
On Sunday, a landslide closed Highway 20 at milepost 44, just east of Cascadia, about…