Three high priority projects were identified in the action plan that aim to reduce sediment delivery to these waterways. Waterways developed conceptual level designs and cost estimates for each project. Designs included stabilizing an eroding gully; repairing and enhancing an existing sediment detention basin; and preparing a guide for decommissioning, repairing, and maintaining the existing road and trail network. Waterways provided design and construction observation services for the trail system improvements that were implemented in summer 2010. Enhancements to the sediment basin and stabilization of the gullies will be implemented in the near future, pending receipt of grant funding.
Geyer Quarry Restoration Plan
Client: Resource Conservation District of Santa Cruz County
The Resource Conservation District of Santa Cruz County (RCD) retained Waterways to prepare a sediment source analysis and action plan for the recently acquired Geyer Quarry property. The Land Trust of Santa Cruz County purchased the property in 2008 to provide protection to a portion of the unique and delicate Sandhill ecosystem that extends from the Bonny Doon through the Scotts Valley area of the Santa Cruz Mountains. Mining activity, road construction, logging, and off‐highway vehicle (OHV) use have exposed steep, denuded hillslopes in many locations throughout the parcel. These eroded areas deliver excessive volumes of sediment to the San Lorenzo River and its key tributaries (in this case Bean Creek and Zayante Creek). The large sediment inputs to the tributary channels negatively impact salmonid habitat.