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| Cement Creek Fishway |
Pacific County, Washington |
Primary Project Type: Fish Passage
Secondary Type: |
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Before work began, the culvert developed high velocity at high flow. High flow ... |
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Primary Problem: Road Culvert
Secondary Problem: |
| Main Restoration Action(s): Culvert removal, Fishway construction |
| Native Fish Focus: Coastal cutthroat, Steelhead |
Is this project part of a watershed scale restoration? No
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| Project Dates: June 2002 to October 2002 |
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Initial Monitoring: Fall 1992
Restoration Implementation: June 15, 2002 to October 18, 2002
Follow-up Monitoring: Fall 2002 |
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Lead Agency:
Washington Department of Fish and Wildlife (work)
Washington State Department of Transportation (funding)
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| Project Location:
This project is located near the town of Naselle in Pacific County, Washington. It is in the SW ¼ of Section 21, Township 10 north, Range 9 west. The new fishway is located on highway 401, milepost 8.8 south of Naselle. Cement Creek (WR1A #24.0598) flows through this fishway at stream mile 0.1 and is a tributary to the South Fork Naselle River.
Click here for a map of the project area.
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| Project Description:
This is a fish passage project designed to enhance the upstream movement of targeted anadromous salmonid species: specifically fall chinook, chum salmon, steelhead, coastal cutthroat (at the time proposed under ESA), and coho salmon (at the time a candidate species for ESA). A culvert, owned and maintained by the Washington State Department of Transportation, acted as a partial obstruction (barrier) to fish passage in Cement Creek. The culvert was a 1.8-meter-diameter corrugated metal pipe. It was 72 meters long, at .8 percent slope, and had no outfall. The culvert was a depth barrier to salmonids at low flow and a velocity barrier at high flow. The culvert was considered partially passable to salmonids (it is known that some adult salmon passed through the culvert at a narrow range of flows and water velocities). In Washington, culverts are determined passable to fish if they pass all species and all age classes 90 percent of the time during ordinary migration flows. Standards are set for the weakest swimmers. |
| Project Goals: To allow anadromous salmonids unrestricted access to part of their historical range. |
| Project Methods:
This project was deliberately scheduled and carried out in summer to early fall to minimize impacts on fish. The construction of this project involved building a new access road, constructing a stream bypass, removing fish, building the new fishway, and post-project resloping and revegetation.
Click here for more information on methods used.
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Slides are serious around a state highway. To prevent any soil movement/erosion,... |
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Here, fishway walls, headwall, and service area wall are complete. Workers are ... |
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| Monitoring Data and Collection
Methods: The following types of monitoring data were gathered post-project by Washington Department of Fish and Wildlife (WDFW) biologists: upstream and downstream spawner surveys, as-built surveys, visual observations, flow measurements, and spot checks.
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Was this project effective
and how was this determined? WDFW has two years of spawner surveys for Cement Creek. The creek was checked for spawners in the fall of 1992 above the culvert with four surveys averaging 16 chum salmon/mile. Cement Creek was checked for spawners after completion of the fishway in fall of 2002 with three surveys averaging 1,225 chum salmon/mile. The new fishway allows anadromous salmonids unrestricted access to part of their historical range (up to 15,958 square meters of spawning and rearing habitat totaling 4.01 lineal miles of stream). The species that benefited most from this work was the Southwest Washington/Columbia River coastal cutthroat (at the time proposed) due to the increased quality and quantity of spawning and rearing area.
A small amount of silt entered the stream as in any hydraulic project of this kind. The stream now flows within its original channel and the hydrology of the watershed remains virtually unchanged.
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(Before) Shown here is a corrugated metal pipe assessed as a barrier to fish due... |
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(After) The completed pool-chute fishway is passable to fish at a wide range of ... |
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| Confounding Effects/Additional
Information: All fishways require maintenance. One or two trips a year are needed to clean the fishway of bedload and other stream debris. The life of the culvert was extended by lining the bottom. It is expected to last about 30 or 40 years. |
| Project
Specs (all specs are estimates): |
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Overall Estimated Cost:
$232,000
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| For more information on this project
contact: |
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Greg Johnson, Environmental Specialist Habitat Program, Washington Department of Fish and Wildlife, Email: JOHNSGGJ@dfw.wa.gov
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| This information
was collected by: Molly Boucher |
| Project last updated on: 2/12/2007 |
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