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Scope/Content: Abstract: The following report describes a steelhead migration barrier assessment within lower Gaviota Creek, accompanied by a geomorphic channel assessment and development of preliminary recommendations for treatment of sites. The study stream reach runs through Gaviota Canyon adjacent to Highway 101, from stream mile 0.9 (from the ocean) to mile 2.4. This reach contains 12 concrete grade control structures and two free spanning bridges. As part of this project, fish passage conditions were also assessed at the Highway 101 culvert on Gaviota Creek (GA_20) and the Highway 101 culvert on Las Canovas Creek (GA_CA_1) a tributary to Gaviota Creek. Both of these culverts are located upstream of the Gaviota Canyon study reach and the results of the culvert assessments are provided in Appendix A.
Fisheries and fish passage Sediment and channel dynamics Dams Dam retirement
Gaviota Creek, CA Las Canovas Creek, CA Las Cruces Creek, CA United States