Recycled Water System Hydraulic Model
City of Roseville, California

West Yost utilized the hydraulic model to optimize use of recycled water and provided the City flexibility in the operation of the system for future demands. The resulting work allows operational decisions to be made to reduce wastewater discharges.

West Yost provided the City with validation of its recycled water system hydraulic model, which was originally developed by City staff using H2OMAP®. West Yost also provided an extended period model that represents the current operational condition of the recycled water system. The project work included review of the existing recycled water model and review of individual model elements (including node elevations and demands, pipelines, and system facilities.) For use in validating the model, West Yost developed a 48-hour diurnal pattern for five (5) separate areas in the City’s existing recycled water system (each area is served by specific facilities) based on supervisory control and data acquisition (SCADA) information received from the City. Based on review of the SCADA information and discussion with City staff, operational controls for each facility were also developed. These facilities included four pump stations and two recycled water treatment plants.