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Storm Water Management Program

We have been designated a large municipal separate storm sewer system (MS4). Our Storm Water Manager is the single point of contact that handles agency issues related to storm water quality. For questions or comments Contact Us.

Stormwater runoff is generated primarily from rain and snowmelt events that flow over land or impervious surfaces, such as roads, parking lots, and building rooftops, and does not soak into the ground. The runoff picks up pollutants like trash, chemicals, oils, and dirt/sediment that can harm our rivers, streams, lakes, and coastal waters. To protect these resources, communities, construction companies, industries, and others like SCDOT, use stormwater controls, known as best management practices (BMPs). These BMPs filter out pollutants and/or prevent pollution by controlling it at its source.


Our MS4 permit grants permission to discharge storm water to all receiving waters in South Carolina. Required Permits Info.

We also have a permit regulating storm water runoff from construction project sites.
NPDES Stormwater Permit (MS4 Permit)
NPDES General Permit for Storm Water Discharges from Large & Small Construction Activities

Information for Design Professionals

This manual was developed to provide information on Stormwater Quality Management.
Water Quality Design Manual
Requirements For Hydraulic Design Studies
Rainfall Intensity Values
Standard Drawings
Approved Rainfall Data
Approved Rainfall Data
DNR Topos
NRCS Soils Info

Public Awareness

SCDOT Welcome Centers and Rest Areas are provided as a service to the public. Stormwater runoff from these facilities is regulated through the National Pollutant Discharge Elimination System Permit.
Help Prevent Pet Waste Problems

The SC Department of Transportation (SCDOT) and PalmettoPride announce a new partnership with the statewide litter cleanup program Adopt-A-Highway. Beginning on October 15, 2012, PalmettoPride will assume management of the successful program of more than 2,500 local volunteer groups.
Palmetto Pride

Notice of Intent

SCDOT construction projects that require an NPDES permit must have a Notice of Intent (NOI) submitted to South Carolina Department of Health and Environmental Control.
NOI Form & Instructions

Illicit Discharges

If you observe something other than storm water discharged into SCDOT's storm water system, this may be an "illicit discharge" to our system.
Use these forms to report an illicit discharge

Sediment & Erosion Control

The following Supplemental Technical Specifications are related to Erosion Control.
Quick Reference Flip book
Erosion Control Specifications