Redevelopment Area Drainage Master Plan
City of Folsom

West Yost prepared a comprehensive drainage master plan for the City’s historical downtown/redevelopment area that encompassed 970 acres in two major watersheds. The master planning effort included determining the capacity of existing drainage facilities, identifying existing deficiencies, evaluating impacts of future growth, determining required facilities to meet future needs and improve existing deficiencies, and determining maintenance needs.

This drainage study was to identify and verify the existing drainage facilities. To accomplish this, we undertook extensive field inspections and surveying to locate existing storm drains, both horizontally and vertically. This work was combined with previous mapping conducted by others, as-built plans, and City’s maintenance personnel’s knowledge of the storm drain system. This data was then compiled to develop a complete storm drain map for the project area. A GIS data base was also developed for use by the City.