Mill Creek Warnock Push-up Dam Elimination

  • GRMW ID: 1837
  • Fiscal Year: 2009

Mill Creek contains ESA listed Snake River summer steelhead, resident rainbow trout and other native\r\nspecies. The steelhead population is severely depressed from historic levels. Elimination of passage barriers is a high priority action wherever listed species occur. The project site is the McNeill Diversion.\r\n\r\nEach year the irrigators enter the stream with heavy equipment to construct a pushup dam to\r\ndivert water into the irrigation ditch, disturbing the streambed, creating excessive sediment and\r\ncreating a fish passage barrier. Passage is restricted for juvenile steelhead, resident rainbow trout\r\nand other native species after the pushup dam in constructed. The pushup dam remains in place\r\nusually from early-July through the end of October.\r\nThe Union Soil and Water Conservation District (SWCD) sponsored the project. BPA funds\r\nwere used to install one vortex rock, channel-spanning weir. The weir installation was part of a\r\nlarger project the SWCD implemented which rebuilt the diversion headgate structure, installed a\r\nnew slide gate, installed a measuring device, installed a new fish screen and piped 1400 feet of\r\n4\r\nopen irrigation ditch. The SWCD acquired funding from the Oregon Watershed Enhancement\r\nBoard for all elements of the project except the rock weir.


Completion Report View
Project Proposal *Note - BPA Proposal View
Project Proposal *Note - OWEB Application View
Line Item Budget View

Contacts & Roles

Name Role Organization
Layne Lindley Technical Contact Union County Soil & Water Conservation District
Lisa Mahon Administrative Contact Union County Soil & Water Conservation District


Organization Role
Bonneville Power Administration Funding Entity
Grande Ronde Model Watershed Cooperator
Oregon Watershed Enhancement Board Funding Entity
Union County Soil & Water Conservation District Sponsor

Grants & Contracts

Organization Contract # Funding Amount
Oregon Watershed Enhancement Board 207-346 $12,045.00
Bonneville Power Administration 42743 $4,106.00
Private Individual $6,300.00
Grande Ronde Model Watershed $3,500.00

Project Points

Site Description Latitude/Longitude Link to KML
McNeil Diversion Project Site 45.2823142855 / -117.779687318 Download KML