U.S. Army Corps of Engineers EPA Wants Western Input On Changes To 'Waters of the U.S.' Rule By Laura Palmisano • Jun 27, 2014 Laura Palmisano. Listen Listening... / 4:22 Listen to the report. The North Fork of the Gunnison River flows through southwestern Colorado. It’s a waterway the feeds into the Gunnison River, a tributary of the Colorado River, which supplies drinking water to millions of people in the West. Feds Seek Comments On Revisions To Clean Water Act By Laura Palmisano • Jun 26, 2014 Listen Listening... / 0:39 The U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers released a joint proposal earlier this year that outlines changes to the Clean Water Act.