BKF was selected by the City of Oxnard to support in the development of a comprehensive Storm Drainage System Master Plan (SDMP) to evaluate its existing storm drain infrastructure, enhance flood protection, and improve water quality throughout the community. Located within the low-lying Oxnard Plain—bounded by the Santa Clara River to the north and Calleguas Creek to the southeast—the City’s stormwater system relies heavily on engineered channels, underground pipes, and pump stations to convey runoff to the Pacific Ocean. BKF will lead the preparation of the SDMP by performing hydrologic and hydraulic modeling, GIS-based mapping, and detailed field verification to assess system performance, identify capacity constraints, and recommend improvements that enhance long-term resilience.

As part of the effort, BKF will develop an XP-SWMM model to simulate 10- and 100-year storm events, evaluate drainage system performance under existing and projected sea level rise conditions, and identify flood-prone areas requiring upgrades. The plan will include comprehensive mapping of the City’s storm drain network using LiDAR data, establishment of performance and prioritization criteria, and preparation of capital improvement recommendations with cost estimates to guide near-, mid-, and long-term implementation.

In addition to infrastructure analysis, the Storm Drainage System Master Plan will incorporate strategies to improve water quality and support compliance with the City’s Municipal Separate Storm Sewer System (MS4) Permit and Total Maximum Daily Load (TMDL) requirements. Through this plan, BKF will help the City of Oxnard strengthen its storm drainage system, increase climate resilience, and promote sustainable water management practices for the benefit of its residents and the surrounding environment.