The water-logged tunnel between the Red Line’s Medical Center and Friendship Heights stations has forced Metro’s leak-pluggers and water mitigators into a resource-sucking game of Whac-A-Mole. Here’s why the tunnel is so wet: Read related article.


Sources: Tom Robinson, Metro’s deputy chief engineer; Allen M. Shapiro, research hydrologist at the U.S. Geological Survey; Pierre Glynn, chief of USGS’s Branch of Regional Research, Eastern Region; Metro | Bonnie Berkowitz and Alberto Cuadra / The Washington Post September 4, 2013
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