Boston topographic maps

Average elevation: 20 ft

Average elevation: 30 ft

Average elevation: 167 ft

Average elevation: 20 ft

Average elevation: 82 ft

Average elevation: 7 ft

Average elevation: 0 ft

Average elevation: 23 ft

Average elevation: 20 ft

Average elevation: 23 ft

Average elevation: 26 ft

As native populations were driven out by European settlers, the Charles River became an early center for hydropower and manufacturing in North America. Although in portions of its length, the Charles drops slowly in elevation and has relatively little current, early settlers in Dedham, Massachusetts, found a…

Average elevation: 33 ft

Average elevation: 3 ft

Average elevation: 102 ft

Average elevation: 112 ft