Tomichi Creek Stream Enhancement Project

The Tomichi Creek Habitat Enhancement Project was designed to improve stream function and ecological health by restoring natural riffle and pool structure, stabilizing streambanks, and addressing accumulated fine sediments that had contributed to an over- widened channel and reduced habitat diversity, along with the construction of a DOT approved bridge capable of supporting full concrete trucks for future building construction. Using native 3–8-inch cobble and 12-inch riprap, Freestone created riffle gradients that increased hydraulic activity, improved sediment transport, and enhanced streambed heterogeneity. Toe wood structures were also built on bends where streambanks needed stabilization. These improvements are expected to increase dissolved oxygen levels, expand habitat for macroinvertebrate communities, and support healthier aquatic conditions. Pool excavation and the removal of fine sediments will expose native cobble substrates, promote robust macroinvertebrate populations and improve overall ecosystem function. In addition, the project will enhance riparian habitat along the project reach, supporting long-term stream stability and biological diversity.

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