11 Rivers Forced Underground!
11 Rivers Forced Underground Sunswick Creek , New York City Photograph by Steve Duncan This story is part of a special National Geographic News series on global water issues. Rivers are the lifeblood of many plant, animal, and human communities. Yet many of the world's rivers have been dammed, degraded, polluted, and overdrawn at alarming rates. Some of the world's great rivers, from the Colorado to the Indus , don't always reach their ends because people have diverted so much water for agriculture, industry, and municipal uses. Other rivers have been completely covered over by development, as people attempted to "tame" nature by ending flooding and maximizing usable land area. But what happens to once-thriving freshwater ecosystems when the rivers they depend on are entombed in sewer pipes beneath layers of concrete and soil? Few species can make the transition to subterranean living. Ironically, it was often rive...