Foster Coulee Cordilleran Glacier moved down the Okanogan River valley and blocked the ancient route of the Columbia River, backing up water to create Glacial Lake Columbia. Initially, floodwater discharged from Glacial Lake Columbia by running up through the head of Grand Coulee and down through Foster Coulee to rejoin the Columbia River. After the floods, meltwater from the glacier reversed course and flowed east through the coulee, forming a hanging valley above the west rim of Grand Coulee and a debris fan on the Grand Coulee floor that can be seen today. As the glacier moved further south, Foster Coulee was
Plum Coulee Plum Coulee Plum Coulee is an unincorporated urban community in the Municipality of Rhineland within the Canadian province of Manitoba that held town status prior to January 1, 2015. It is west of Altona, one hour southwest of Winnipeg and half an hour from the United States border. It is also the former home to the Plum Coulee Xpress hockey club. It has a man-made beach located in town. Philanthropist Saidye Bronfman was born in Plum Coulee. Plum Coulee's population of 800 is growing through land development. Working with local land owners, the former Town of Plum Coulee developed a