In 1911, the Cedar River floodedRenton. To avoid future floods, in 1912 the Cedar was diverted into Lake Washington. Then, with the opening of Seattle's Lake Washington Ship Canal in 1916, the lake's level dropped nearly nine feet and the Black River dried up. Today, part of its bed forms the Black River Riparian Forest and Wetland.
External links
Friends of the Black River (http://www.rainieraudubon.org/rain-friends.htm)
The Hudson River Railroad was chartered the next year as a continuation of the Troy and Greenbush south to New York City, and was completed in 1851.
The width of the Lower Hudson River required major feats of engineering to cross, the results today visible in the Verrazano Narrows and George Washington Bridges, as well as the Lincoln and Holland Tunnels and the PATH and Pennsylvania Railroad tubes.
The Hudson River serves as a political boundary between the states of New Jersey and New York, and further north between counties in New York.