Master Plan Development - City of Boca Raton

City of Boca Raton Stormwater Management Master PlanPart I – Task 3 ReportPalm Beach Farms Stormwater Management ImprovementsReported Problem(s): Reports of street flooding in several locations have been received from residents,and City staff has confirmed recurring flooding at the intersections of Juana Road/SW 21 st Street andMontezuma Road/SW 21 st Street.System Description: There is no formal stormwater management system in this area. However,moderately well maintained and expansive swale areas along both sides of most streets appear to managethe stormwater runoff from most rainfall events. There appear to be three intersections where theroadway is low and ponding occurs before water enters the swale areas; Montezuma/SW 21 st Street,Juana/SW 19 th Street, and Juana/SW 21 st Street.Conceptual Solution(s): The recommended conceptual improvements to address the intersection floodingoccurrences are to overlay the intersections at Montezuma/SW 21 st Street and Juana/SW 19 th Street so thatpositive flow occurs into the adjacent swales. City staff felt that a positive outfall for this neighborhoodcould provide an increased level of service for the streets. Therefore, this conceptual solution includes therecommendation of an inlet and exfiltration trench system along the south side of SW 21 st Street. Thissystem will be connected via additional exfiltration trench along Juana Road, to a new outfall to theHillsborough Canal. During preliminary design, the estimated costs and calculated benefits can be usedin determining whether or not to include the positive outfall connection.Water Quality Impacts: The proposed conceptual solution includes the use of exfiltration trench toprovide added water quality to the system.L:\boca\bocaswmp\A6016.03\rp02accm.docPage 47MOCK•ROOS