Overview
Southeastern Propeller is a stormwater outfall in Mobile, Alabama, discharging urban runoff into local waterways. It operates under US EPA NPDES MS4 permit regulations.
Southeastern Propeller is a stormwater outfall located at 310 Cochran Causeway in Mobile, Alabama, within Mobile County. As a stormwater outfall, it serves as a discharge point for urban runoff from the surrounding area, which includes industrial and residential catchments. The facility is operational and falls under the regulatory oversight of the US Environmental Protection Agency's National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) program. Stormwater outfalls like Southeastern Propeller are critical components of urban drainage infrastructure, designed to convey runoff from streets, parking lots, and other impervious surfaces to receiving waters. In Mobile, a city with significant industrial activity and a humid subtropical climate, stormwater management is essential to mitigate flooding and reduce pollutant loads. The facility's discharge likely enters Mobile Bay or its tributaries, which are ecologically sensitive water bodies. The environmental significance of this outfall lies in its role in managing urban stormwater runoff, which can carry pollutants such as sediment, nutrients, heavy metals, and bacteria. Under the Clean Water Act, the facility must comply with MS4 permit requirements, including implementation of best management practices to control pollution. The outfall's location in an industrial area may necessitate additional monitoring and treatment measures to protect downstream water quality.
Environmental context
Mobile, Alabama, experiences a humid subtropical climate with high annual rainfall, leading to significant stormwater runoff. The outfall discharges into the Mobile Bay watershed, an ecologically important estuary that supports diverse aquatic life and commercial fisheries. Urban and industrial activities in the catchment area contribute pollutants such as sediment, oil, grease, and heavy metals, which can impair water quality. Regulatory oversight under the EPA's NPDES MS4 program requires the facility to implement stormwater control measures to minimize environmental impact.
Frequently asked questions
The Southeastern Propeller stormwater outfall is located at 310 Cochran Causeway in Mobile, Alabama, within Mobile County, United States.
The Southeastern Propeller outfall discharges urban stormwater runoff from the surrounding area into local waterways, helping to manage flooding and convey runoff from impervious surfaces.
This outfall operates under the US EPA's National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) program, which requires permits and implementation of best management practices to control pollution.
Common pollutants include sediment, nutrients, heavy metals, oil and grease, bacteria, and other contaminants from urban and industrial activities that can impair water quality in receiving waters.
The Clean Water Act requires stormwater discharges from MS4s to obtain NPDES permits, mandating pollution prevention plans, monitoring, and structural controls to protect water quality in Mobile Bay and its tributaries.
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