PONTILLY HAZARD MITIGATION PLAN
Dana Brown & Associates serves as the landscape architect for the Pontilly Hazard Mitigation Grant Program project (HMGP). Pontilly is composed of two moderate income, minority neighborhoods, Pontchartrain Park and Gentilly Woods (almost 900 acres in size), which have for decades experienced repetitive losses due to flooding. Both neighborhoods were severely damaged by Hurricane Katrina, with hundreds of homes destroyed or severely damaged. The Hazard Mitigation Grant is funding the analysis, modeling, design, and construction of green infrastructure throughout Pontilly. The stormwater management interventions are necessarily retrofits in these existing older neighborhoods. Issues addressed include heavy clay soils, severe soil subsidence, and drainage pipes and pumps taxed beyond their capacity. Working with hydrologic engineers, Dana Brown & Associates designed stormwater detention areas in empty lots that also serve as small parks, bioretention areas in curb extensions along streets, bioswales between curbs and sidewalks, and pervious concrete in parallel parking zones. The project has been well-received and the benefit-cost analysis proves a 1.5:1 benefit ratio.