For years, parks and river access enthusiasts have looked at the Tom McCall Bowl and seen unrealized potential. The bowl, a strip of beach located just south of the Hawthorne Bridge at the tail end of the Tom McCall Waterfront Park, is one of the only places a person can dip their toes in the Willamette River within the Portland city limits. But most Portlanders don’t see it as much of a destination, except when...