Gregory Hill Pit Stormwater Outfall, Jefferson, Alabama | United States

Gregory Hill Pit is a stormwater outfall facility located in Jefferson, Marengo County, Alabama, United States. The facility is operational and serves as a point of discharge for stormwater runoff in the region. As a stormwater outfall, it plays a role in managing urban and industrial stormwater flows to prevent flooding and reduce pollutant loads. The facility operates under the regulatory framework of the US Clean Water Act and the EPA's NPDES MS4 permit program. In Alabama, stormwater discharges are regulated by the Alabama Department of Environmental Management (ADEM). The NAICS code 212321 indicates an association with construction sand and gravel mining, suggesting the outfall may serve an industrial catchment area. Gregory Hill Pit contributes to local stormwater management by conveying runoff from its catchment area. Proper operation of such outfalls is essential to protect water quality in receiving water bodies, particularly in the context of the Black Warrior River watershed. The facility's location in a rural county highlights the importance of stormwater controls even in less urbanized settings.

The facility is located in Marengo County, Alabama, within the Black Warrior River watershed. The region experiences a humid subtropical climate with significant rainfall, making stormwater management critical to prevent erosion and flooding. Discharges from the outfall may affect local water quality, particularly if the catchment includes industrial activities such as sand and gravel mining. Regulatory compliance with NPDES permits is essential to minimize impacts on aquatic ecosystems.