Upper Yampa Water Conservancy District - 2022 Union Ditch Headgate Project

The project purpose is to improve delivery to the Union Ditch during low flow periods in the Yampa River, while minimizing long term impacts to the riverine and riparian environment in the project reach. The scope of this project includes constructing and/or installing the following: Demolition and Removal of existing headgate, inlet pipe, and culverts. Installation of concrete headgate structure with metal hardware. Installation of a boulder grade control structure across the Yampa River. Installation of an engineered riffle downstream of the boulder grade control structure. Installation of bank stabilization measures in two locations. Adjustment of an existing 1-foot Parshall flume. Installation of culvert pipe in two locations, including through the proposed headgate. Maintenance of the Union Ditch, including sediment removal and vegetation clearing. Upper Yampa Water Conservancy District P.O. Box 775529 Steamboat Springs C0 80477. The WORK includes demolition and removal of existing headgate, inlet pipe, and culverts. Installation of concrete headgate structure, boulder grade control structure, engineered riffle, and bank stabilization. Adjustment of existing 1-foot Parshall flume, installation of culvert pipe at two locations, and sediment/vegetation remove in ditch. Armoring rock upstream and downstream of the concrete headgate structure. CONTRACT DOCUMENTS may be examined at the office of the OWNER and will be available on or after September 9, 2022. CONTRACT DOCUMENTS will be sent by the OWNER upon request. The OWNER will maintain a plan holders list.

Division 31 -	Earthwork, Erosion and Sedimentation Controls.
Division 33 -	Utilities, Storm Drainage Utilities, Ponds and Reservoirs.
Division 35 -	Waterway and Marine Construction, Shoreline Protection, Waterway Construction and Equipment.