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LA 227 - Restoration of Rivers and Streams Fall 2006. Instructor: Dr. Mark Tompkins, University of California, Berkeley

Download the Paper (1.1 MB, PDF file) - December 1, 2006 Related Files: MartinCynPhotos.pdf (11925 kB) Photo analysis of grade control and bank stabilization structures in Martin Canyon Creek Tell a colleague about it. Printing Tips: Select 'print as image' in the Acrobat print dialog if you have trouble printing.

ABSTRACT:
Located in Dublin, California, Martin Canyon Creek is a small tributary draining 1.08 square miles in the Alameda Creek watershed. In 1999 a restoration project consisting of gradient control and bank stabilization structures was completed. We conducted a post-project appraisal of the Martin Canyon Creek Restoration Project, comparing current conditions with the project’s listed goals and as-built conditions. We surveyed a longitudinal profile and a selected cross section to compare current channel slopes and geometry with pre-project and as-built conditions. In addition, we took photos of grade control and bank stabilization structures at established photo monitoring points and compared them with as-built photos to qualitatively compare and evaluate performance of structural components of the project. Grade control structures appear to be stable and performing as designed, with significant local sedimentation upstream of most grade control structures. Grade Control Structure #4, however, shows significant signs of deterioration and could be prone to failure without maintenance in the near term. We suspect that the deterioration of this structure is related to its location in a bend and a high upstream channel slope, however further research is required to fully understand the performance of this structure. Bank stabilization structures are also performing in terms of protecting neighboring structures, although some show signs of deterioration. Overall the dynamic equilibrium slope that guided the design of the project appears to have been achieved with fewer structures than originally proposed.

SUGGESTED CITATION:
Wayne Wagner and Jesse Roseman, "Post-project appraisal of Martin Canyon Creek restoration" (December 1, 2006). Water Resources Center Archives. Restoration of Rivers and Streams. Paper wagner.
http://repositories.cdlib.org/wrca/restoration/wagner