The City of Riverside has four types of Park Development Fees, including the Regional/Reserve Fee, Local Fee, Aquatic Facility Fee, and Trail Fee. Generally, the fees are imposed on all new development since new development in the City generates a need for added facilities and an increased demand on existing facilities. The fees are necessary to provide funding for new facilities or improvements to existing facilities meeting established standards for such new development.
See the following documents for details:
REGIONAL PARKS AND RESERVE PARKS DEVELOPMENT FEE RIVERSIDE MUNICIPAL CODE
LOCAL PARK DEVELOPMENT FEES RIVERSIDE MUNICIPAL CODE