Greenhorn Sediment Removal Project

Project Description. The Nevada Irrigation District (NID), acting as Lead Agency under the
California Environmental Quality Act (CEQA), has prepared a Draft Environmental Impact Report (DEIR) for the Greenhorn Sediment Removal at Rollins Reservoir Project (Project). The objectives of the Project are as follows:

  • Restore and maintain the historic water storage capacity in the Greenhorn Arm of Rollins
    Reservoir and prevent further migration of suspended sediment from this arm into the main
    reservoir.
  • Maintain the water storage capacity in the Greenhorn Arm of Rollins Reservoir in perpetuity
    by conducting annual sediment maintenance activities to remove accumulated sediments
    which could enter the main reservoir during storm water flows.
  • Restore recreational opportunities in the Greenhorn Arm of Rollins Reservoir through the
    removal of accumulated sediment thereby increasing water depth and improving aquatic
    habitat and boating access.
  • Economically dispose of the sediment removed from the Greenhorn Arm of Rollins
    Reservoir.

The DEIR evaluated the environmental impacts of the Project and identified alternatives. Additional information about the Project is presented in Attachment A of the Notice of Preparation, that can be found in the Project Documents link to the right of this page. This Notice of Preparation is also available for review at the NID’s Business Center, 1036 West Main Street, Grass Valley, CA and the Nevada County Clerk’s office at 950 Maidu Avenue, Nevada City, CA. The DEIR can be accessed via the links below.