Stormwater and Landscape A Green Infrastructure Network to Reduce Stormwater Flooding, Reduce Non-Point Source Pollution, & Enhance Community Open Space
VACANT PARCELS
Vision Our vision is to identify opportunities for green infrastructure improvements in North Port St. Joe (NPSJ) to reduce residential flooding, enhance community open space, & improve water quality.
Objectives
Outcomes
• Document & analyze existing hydrologic & infrastructure conditions. • Quantify the amount of water that needs to be captured to reduce stormwater flooding & runoff. • Identify green infrastructurebased strategies to reduce flooding, improve water quality, & enhance community open space at the neighborhood, street and parcel scales.
• The three-tier strategy includes developing stormwater capture and treatment at the neighborhood, street and parcel scale. • Total project stormwater capacity is 7.05 million gallons. • Design has potential to improve water quality through nutrient and other pollutant load reduction.
STORMWATER INFRASTRUCTURE
SEA LEVEL RISE 2100
FEMA FLOOD ZONES
SOIL DRAINAGE
ELEVATION
Process Conversations with the community led us to understand parcel specific locations that struggle with flooding. We used data, including GIS maps of sea level rise, flood zones, elevation, soil drainage, and an AutoCAD map of existing stormwater infrastructure, to support these claims and help us better understand stormwater drainage in North Port St. Joe.
We layered these maps to identify specific streets and parcels that are prone to flooding. Community identified areas with flooding were supported by flood zone and low-lying elevation data. Vacant parcels were identified in areas prone to flooding as possible locations to store and treat stormwater.
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GIS Layers used for Site Analysis
Planning for half a 25-year storm over 100-acres within the North Port St. Joe Neighborhood requires 7.8 million gallons of stormwater capacity.
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