GRAIN CRAFT Stormwater Outfall, Birmingham, Alabama | United States

GRAIN CRAFT is a stormwater outfall located at 700 Milner Drive in Birmingham, Jefferson County, Alabama, United States. The facility is operational and serves as a discharge point for stormwater runoff from an industrial catchment area, likely associated with food manufacturing given its NAICS code 311211 (Flour Milling and Malt Manufacturing). As a stormwater outfall, it is part of the broader urban drainage network in Birmingham, a city with a humid subtropical climate and significant industrial activity. The facility operates under the regulatory framework of the United States Clean Water Act, specifically the National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permits. Birmingham is covered under Phase I MS4 requirements for large municipalities, meaning the city must implement stormwater management programs to control pollution from runoff. The outfall's discharge may be subject to monitoring and best management practices to protect receiving waters, which in this region include the Black Warrior River watershed. As a stormwater outfall in an industrial area, GRAIN CRAFT plays a role in managing runoff from impervious surfaces and potential pollutant loads. The facility's environmental significance lies in its contribution to local water quality management, particularly in an urban setting where stormwater can carry sediments, nutrients, and industrial contaminants. Proper operation and compliance with permit conditions are essential to minimize impacts on downstream ecosystems and community water resources.

Birmingham, Alabama, experiences a humid subtropical climate with frequent thunderstorms and an average annual rainfall of about 55 inches, leading to significant stormwater runoff. The outfall discharges into the Black Warrior River watershed, which supports diverse aquatic life and provides drinking water. Urban and industrial catchments in the area can contribute pollutants such as sediment, heavy metals, and organic compounds, making stormwater management critical for protecting water quality and ecosystem health.