Overview
HOT SPRING CO SWA #9 FRIENDSHIP is a stormwater outfall in Friendship, Arkansas, serving the local community under the Clean Water Act.
HOT SPRING CO SWA #9 FRIENDSHIP is a stormwater outfall located at 1180 Caney Road in Friendship, Arkansas, within Hot Spring County. This facility is part of the municipal separate storm sewer system (MS4) infrastructure, managing stormwater runoff in the region. As a stormwater outfall, it discharges collected stormwater into local waterways, playing a key role in flood control and water quality management. The facility operates under the regulatory framework of the United States Clean Water Act, specifically the National Pollutant Discharge Elimination System (NPDES) MS4 permit program. As a Phase II small MS4, it is subject to requirements for stormwater management plans, best management practices, and monitoring to reduce pollutant discharges. The outfall serves an urban catchment area, with typical stormwater constituents including sediment, nutrients, and metals from roads and developed surfaces. Environmental significance lies in its discharge to receiving waters in the Ouachita River basin, which supports aquatic habitats and downstream uses. Proper operation helps mitigate flooding and erosion while protecting water quality. The facility's compliance with NPDES permits is essential for maintaining the ecological health of local streams and lakes.
Environmental context
The facility discharges stormwater into the Ouachita River basin, which is subject to impairments from urban runoff, including sediment and nutrients. The region experiences a humid subtropical climate with frequent thunderstorms, leading to high runoff volumes. The outfall's catchment includes residential and agricultural areas, contributing pollutants that require management under the MS4 permit to protect downstream aquatic life and recreational uses.
Frequently asked questions
The facility is located at 1180 Caney Road in Friendship, Arkansas, within Hot Spring County, United States.
It is a stormwater outfall that discharges collected stormwater runoff from the municipal separate storm sewer system (MS4) into local waterways, helping to manage flooding and protect water quality.
The facility operates under the U.S. Clean Water Act's National Pollutant Discharge Elimination System (NPDES) MS4 permit program, which requires stormwater management plans and best management practices.
The outfall discharges into the Ouachita River basin, supporting aquatic habitats and downstream uses. Proper management reduces pollutant loads from urban runoff, protecting water quality and ecosystem health.
Common pollutants include sediment, nutrients (nitrogen and phosphorus), heavy metals, oil and grease, and pathogens from urban and agricultural runoff, which are regulated under NPDES permits.
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