Geology of the Pacific Northwest along their course. The larger cataract was that of the upper Grand Coulee, where the river roared over an waterfall. The eroding power of the water plucked pieces of basalt from the precipice, causing the falls to retreat and self-destruct by cutting through to the Columbia River valley near what is now the Grand Coulee Dam. The other major cataract is now known as Dry Falls. It started near Soap Lake in Washington State, where less resistant basalt layers gave way before the great erosive power of this tremendous torrent and waterfalls developed. As in the upper Grand Coulee, the
Grand River Collegiate Institute Grand River Collegiate Institute Grand River Collegiate Institute is a public secondary school in Kitchener, Ontario. The school is located at 175 Indian Road. It is part of the Waterloo Region District School Board. Grand River's principal is currently Jim Woolley. Grand River's sports teams are known as the Renegades (commonly shortened to the "Rens"). As the fifth collegiate in Kitchener-Waterloo, Grand River Collegiate (GRCI) was built on Indian Road near the Grand River on Kitchener's east end. "Grand River" was chosen in favour of other names like Parkwood, Sand Hills, as the name for the new school. GRCI officially