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| FISH PASSAGE
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 | A view of the Savage Rapids Dam.
RDG completed a temporary fish passage design to be implemented during dam removal. |
RDG is working with stakeholders to improve fish passage for both resident and anadromous fish species. Projects in Oregon have focused on providing passage for steelhead, Chinook, 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, stream simulation, and fishway designs to correct fish passage limitations.
Fish Passage Services
- Project management and planning
- Fish passage alternatives analysis
- Topographic surveys and GIS
- Hydraulic modeling
- Sediment transport modeling
- Design preparation including roughened channels,
step-pool structures, streambed simulation culverts,
fishways, and culvert retrofits
- Local, state, and federal project permitting
- Construction stakeout and construction administration
- Fish screen and irrigation diversion design.
A step-pool bypass channel was constructed to provide fish
passage around a barrier, providing fish access to springs
for the first time in 40 years. |
 A stream simulation culvert replaced an
undersized culvert on a sidechannel to the North Santiam River. |
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