The design for fish passage improvements at the site were finalized in 2010 and consisted of replacement of the existing ford with a clear-span bridge and construction of a roughened channel to transition. The channel was reconstructed for approximately 240 feet using native rock salvaged from the site to provide a smooth transition in the stream profile and hydraulic conditions conducive to fish passage. The design incorporated three pools and installation of woody debris structures in the channel to provide resting area, refuge, and aquatic habitat. Additionally, boulder weirs were placed to maintain pool scour and grade control through the project area. The site improvements included:
• Construction of bridge, abutments, and retaining walls
• Construction of a roughened channel, boulder weirs, and large wood structures
• Installation of bank protection
• Installation of willow and sycamore poles and native plants
Gobernador Creek Bridge Replacement and Fish Passage Improvements - Widdoes Residence
Client: South Coast Habitat Restoration
Waterways was contracted by South Coast Habitat Restoration to provide design services for the improvement of fish passage conditions at Widdoes Crossing, a private road crossing on Gobernador Creek. Fish passage conditions at the site were severely impacted by incision of the streambed below a concrete and boulder ford which created an 8 foot hydraulic drop.
Image Gallery
View the embedded image gallery online at:
https://www.watways.com/widdoes-crossing-at-gobernador-creek#sigProId211ceedb05
https://www.watways.com/widdoes-crossing-at-gobernador-creek#sigProId211ceedb05