From an oped penned by Sharon Lance and Jo Evans running in the Boulder Daily Camera:
One of the riders that Coloradans should be most concerned about also strikes at the heart of the Clean Water Act. This rider blocks federal guidance and rulemaking that would restore protection for some wetlands and streams which were curtailed by two harmful and confusing Supreme Court decisions, Rapanos (2006) and SWANCC (2001). Taken together, these decisions and existing agency guidance have removed protections for at least 20 million acres of wetlands, especially prairie potholes and other seasonal wetlands that are essential to waterfowl populations throughout the country.
In Adams, Arapahoe, Broomfield and Park counties, 40 percent to 60 percent of the stream miles feeding the drinking water supplies for 725,000 people are at risk of losing Clean Water Act protections from pollution. Preventing action on this issue denies protections for Colorado`s rivers, lakes and streams and denies clarity to landowners, conservationists and the regulated community.