The lowered shoreline of Lake Mendocino in Mendocino County, Calif., on April 20. (Photo courtesy of Andrew Innerarity/California Department of Water Resources) Officials from four of the Bay Area’s ...
The River Conwy in North Wales flows through Snowdonia. In the past, the valleys of Snowdonia were carved out by vast ice sheets. Today, flowing water shapes the landscape. Freeze-thaw weathering ...