Services

Category

Fish Passage and Screening

Description

RDG is working with stakeholders to improve fish passage for both resident and anadromous fish species in the Pacific Northwest and Intermountain West. Projects in Oregon have focused on providing passage for steelhead, Chinook and coho salmon, endemic suckers, redband trout, and other native species. Montana fish passage projects typically involve improving passage for the State of Montana's species of special concern westslope cutthroat trout, and the federally-threatened bull trout. RDG employs techniques including roughened channel, streambed simulation culvert techniques, and natural and traditional fishway designs to correct fish passage limitations.


RDG also provides our clients with fish screen design services. We typically work with passive and active screen manufacturers to complete screening solutions. The projects are targeted at restricting fish loss to irrigation networks and modifying diversion structures to improve water use efficiency. RDG has completed screening projects in western Montana, the Willamette Valley, and in the Upper Deschutes River system.

Included Services

  • Project management and planning
  • Fish passage alternatives analysis
  • Topographic surveys and GIS
  • Hydraulic and sediment transport modeling
  • Fish passage design
  • Local, state, and federal project permitting
  • Construction stakeout and construction administration
  • Fish screen and irrigation diversion design
  • Design preparation for the following fish passage solutions:
  • Roughened channels 
  • Step-pool structures
  • Streambed simulation culverts
  • Natural and traditional fishways        

Related Projects

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Project Images

Preparation of the excavation trench prior to placement of the new arch pipe 6 cfs pipe-mounted wedge wire fish screen installed in Snowbank Creek 10 cfs rotary drum fish screen installed at upper Morrell Creek diversion 10 cfs flat panel fish screen installed at lower Morrell Creek diversion Morrell Creek lower diversion after project Morrell Creek lower diversion before project Streambed simulation design drawing and specifications View of arch pipe outlet following placement and prior to fillslope stabilization
Preparation of the excavation trench prior to placement of the new arch pipe
Preparation of the excavation trench prior to placement of the new arch pipe.
6 cfs pipe-mounted wedge wire fish screen installed in Snowbank Creek
6 cfs pipe-mounted wedge wire fish screen installed in Snowbank Creek.
10 cfs rotary drum fish screen installed at upper Morrell Creek diversion
10 cfs rotary drum fish screen installed at upper Morrell Creek diversion.
10 cfs flat panel fish screen installed at lower Morrell Creek diversion
10 cfs flat panel fish screen installed at lower Morrell Creek diversion.
Morrell Creek lower diversion after project
Morrell Creek lower diversion after project.
Morrell Creek lower diversion before project
Morrell Creek lower diversion before project.
Streambed simulation design drawing and specifications
Streambed simulation design drawing and specifications.
View of arch pipe outlet following placement and prior to fillslope stabilization
View of arch pipe outlet following placement and prior to fillslope stabilization.