The Alva B. Adams Tunnel was the linchpin of the controversial Colorado-Big Thompson Project, a massive feat of engineering that redirected millions of gallons of Colorado River water from the Western Slope to farms and subdivisions along the Front Range.
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Courtesy of Center of the American West, University of Colorado and Fulcrum Publishing. The map was created by Honey Lindburg and originally appeared on pages 124-5 of A Ditch in Time by Patricia Nelson Limerick and Jason L. Hanson, published by Fulcrum Publishing in 2012. ...