Environmental Impact Statement - Windy Gap Firming


The Municipal Subdistrict, Northern Colorado Water Conservancy District (Subdistrict) requested a Section 404 (Clean Water Act) Permit from the USACE Omaha District Regulatory Branch to construct Windy Gap Firming Project Water Supply facilities for its customers and 13 other Front Range water providers located in Colorado between Denver and Fort Collins. The U.S. Bureau of Reclamation (USBR) is the lead federal agency managing the EIS for the project since 2003, and the Omaha District Regulatory Branch has been participating as a Cooperating Agency. The project captures water from the Colorado River, pumps it to existing reservoirs on the west slope and moves the water through a tunnel system (the Colorado-Big Thompson Project operated by Reclamation) to the Front Range of Colorado. The project proposes to construct Chimney Hollow Reservoir, west of Berthoud, Colorado.

The USBR is the lead federal agency managing the EIS for the project, documents related to this project are available at: http://www.usbr.gov/gp/ecao/nepa/windy_gap.html

EIS Milestones
Initial Notice
September 8, 2003
December 19, 2003
Draft EIS
August 29, 2008
USACE Issues 404 Public Notice August 29, 2008
Draft EIS Comments Due
December 29, 2008
Final EIS
November 20, 2011
USBR issues Record of Decision December 19, 2014 

Permit Decision

     Appendix A - WGFP Comments and Responses

     Appendix B - 401 WQC Windy Gap

     Appendix C - Biological Opinion

     Appendix D - Section 106 MOA

     Appendix E - Mitigation and Monitoring

     Appendix F - IP Application


May 26, 2017