Santa Cruz, CA
831.421.9291
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  Portland, OR
503.227.5979
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Eureka Canyon Bridge Replacement and Fish Passage Improvements @ Koinonia Conference Center

IMG 2531webClient: Resource Conservation District of Santa Cruz County

Waterways contracted with the Santa Cruz County Resource Conservation District (SCRCD) and the State Coastal Conservancy to provide design services for the improvement of fish passage at a stream crossing along Shingle Mill Gulch. The project site had a 6-foot diameter corrugated metal pipe culvert which provided conveyance beneath a private driveway servicing the Koinonia Conference grounds. Hydraulic analyses of the culvert determined that it was undersized for design flood flows and presented a fish passage impediment to migrating salmonids.

The proposed project replaced the existing culvert with a full span bridge and channel restoration features to improve fish passage, habitat value, and flood conveyance. The bridge alignment was located approximately 85 feet downstream of the existing crossing. This alignment was selected to allow continuous access to the campground during construction and to provide an acceptable turning radius for buses entering from and leaving to travel south on Eureka Canyon Road.

Site improvements included:

 

  • Construction of a roughened channel and a large wood structure
  • Installation of bank protection
  • Construction of bridge, abutments, and retaining walls
  • Relocation of a portion of the private driveway
  • Installation of erosion control and native revegetation

Project Menu

Central California Project Portfolio
Aptos Creek Watershed Assessment and Enhancement Plan
Attiyeh Ranch Conservation Easement
Camp Pico Blanco Fish Ladder and Dam Retrofit
City of Santa Cruz Watershed Management Plan
Corralitos Creek Bank Stabilization
Eureka Canyon Bridge Replacement and Fish Passage Improvements @ Koinonia Conference Center
Fall Creek Fish Ladder
Geyer Quarry Restoration Plan
Mitchell Creek Dam Removals & Fish Passage Improvements
North Monterey County High School Nature Area Design Project
Pajaro River Care Project
Potrero Hills Wetland Mitigation
Quail Hollow Bridge Replacement and Channel Restoration
Salmonid Enhancment Plan for the San Lorenzo River
San Lorenzo River Monitoring
Soquel Creek Floodplain Restoration
Sycamore Creek Bank Stabilization
Valencia Creek Fish Ladder
Watsonville Sloughs Landfill Site Restoration near Ramsay Park
Watsonville Sloughs Manabe Property Wetland Restoration
Watsonville Trails Master Plan
West Valley College Stream and Wetland Enhancement and Riparian Trail Plan
Zayante Area Sediment Source Reduction Plan
Northern Cal-Nevada Project Portfolio
Big Meadow Creek Watershed Assessment
Blackwood Creek Stream Restoration
Cold Creek/ High Meadow Ecosystem Restoration
Coldstream Floodplain Enhancement Project
Edgewood Creek Watershed Assessment, Enhancement Plan, & Restoration
Hat Creek Restoration
Hope Valley Meadow Restoration
Independence Lake Log Cribwall and Fish Barrier Design
Kunzler Ranch Gravel Extraction
Perazzo Meadows Geomorphic Assessment
Russian River Projects
Sonoma County Fish Passage Projects
St. Helena Comprehensive Flood Protection Plan
Trout Creek Restoration
Upper Carson River Watershed Assessment
Pacific Northwest Project Portfolio
Batwater Station Floodplain Enhancement Project
Clackamas County Water Environment Services Action Planning & Geomorphic Monitoring
Dairy Creek- Sturgeon Lake Restoration
East Valley Mine Wetland Mitigation Project
Fox Creek Restoration Plan
Gales Creek Restoration Planning
Gooseneck Creek Restoration
Half Mile Lane Mitigation Bank
Hillsboro Landfill Wetlands Outfall Channel and No-Rise Documentation
Jackson Creek Restoration Plan
Lower Clatskanie Floodplain Restoration
Lower Cottonwood Creek Points of Diversion Modification Projects
Mill Creek Side Channel Restoration
Milton Creek Large Wood Enhancement Project
Murtaugh Creek Fish Passage
North Fork Deep Creek Habitat Enhancement Project
Rinearson Creek Natural Area Restoration
Salmon and Cox Creek Fish Barrier Improvement Project
Scappoose Bay Restoration Plan
South Fork Necanicum Fish Passage Improvement Project
Southern California Project Portfolio
Arroyo Grande Creek Channel Flood Mitigation
Circle G Ranch Fish Passage Improvement
Gobernador Creek Bridge Replacement and Fish Passage Improvements - Widdoes Residence
Morro Fish Review
Pismo Creek Fish Passage Project
Rodriguez Fish Passage Project
Tally Ho Channel Assessment