Water Quality: Waters of the United States

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On April 15, 2019, the State of Colorado submitted the below comments on the draft proposed Revised Definition of “Waters of the United States,” 84 Fed. Reg. 4154 (Feb. 14, 2019).

  • Comment Letter
  • Appendix 1 - Biological Importance of Ephemeral and Intermittent Streams and Non-Adjacent Wetlands in Colorado
  • Appendix 2 - More Information Regarding the Science of Tributaries