Folsom Dam model
U.S. Rep. Doris Matsui discusses the construction of the “second dam” being installed at Folsom Dam with project staff in Folsom, Calif., in February 2011. The Corps uses a 1/240-scale model of the dam created with a 3-D printer to help explain how the project will work.

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Photo by: Michael J. Nevins |  VIRIN: 110203-A-OJ861-100.JPG