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Dean Creek

La Center, Washington


Department of Natural Resources


Clark Conservation District


Mike Watters Excavation


August 2007

In an effort aimed at improving fish passage, the Department of Natural Resources (DNR) replaced a deficient culvert at Dean Creek. High water flows had eroded the creek bed at the downstream end of the original culvert, leaving a 10-foot deep water pool that prohibited fish from migrating up the creek.

“Fish were not able to negotiate their way up the creek, due to the height of the culvert above the creek” said Sam Griese of the Clark Conservation District. A temporary access road was constructed to minimize disturbance to nearby homeowners during installation of the new bridges. Phone wires were relocated and the stream was routed through a pipe while work was underway. Additionally, officials of the state Department of Fish and Wildlife and members of the community netted more than 50 fish from the stream and transported them to pools downstream from the site. Concrete footings were installed and the new MULTI-PLATE® structure was constructed in seven hours. The roadway surface, approximately 34’ above the structure, was replaced at the same elevation. The project was funded through the Family Forest Fish Passage Program, administered by the state DNR, state Department of Fish and Wildlife, and the Clark Conservation District. The Dean Creek project is one of several DNR culvert replacement projects slated to take place in the next year.


Technical Description:

  • Span: 20-ft.
  • Rise 10-ft.
  • Length: 110-ft.
  • Product: MULTI-PLATE®

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