StormwaterStormwater

The Horry County Stormwater Department maintains drainage systems in Horry County. They also conduct mosquito spraying and issue stormwater permits.

Visit Stormwater's Official Website

Stormwater Nav Bar

To report a drainage or water quality problem, please call the hotline: 843-381-8000.

Resources & Tools

Ordinances, Manuals, and Reports

Horry County Code of Ordinances

Relevant Chapters:
Revised Stormwater Management Ordinance - effective July 12, 2017
Stormwater Plan Review Fee Calculator - effective July 12, 2017
Chapter 17.7 - Stormwater Management
Chapter 18 - Land Development Regulations
Chapter 9 - Flood Damage Prevention and Control
Chapter 10, Article II - Solid Waste Handling and Disposal
Chapter 10, Article II - Exterior property maintenance requirements
Chapter 16, Article IV - Obstruction of drainage structures, rights of way
Chapter 4, Article III - Migratory Wild Fowl
Chapter 13, Article VI - Mining Permits
Manuals and Plans
Mining Activities in Horry County
Revised Horry County Stormwater Management Design Manual - effective July 12, 2017
BMP Design Calculator | Water Quality Compliance Calculator | Calculator Instructions
Horry County Stormwater Practices Permanent Maintenance Covenants
Before July 12, 2017, Horry County Stormwater Management Design Manual Part 1 | Part 2 | Part 3
SC Department of Health and Environmental Control Stormwater BMP Handbook
Low Impact Development in Coastal South Carolina: A Planning and Design Guide
208 Water Quality Plan for the Waccamaw Region
North Carolina Stormwater BMP Manual
North Carolina Low Impact Development Guidebook
Georgia Stormwater Management Manual and Coastal Stormwater Supplement
Watershed Plans
Murrells Inlet Watershed Plan 2014 (scroll down to Water section)
Drainage Studies
Highways 9 and 57 Drainage Study 2016-2017
Phase 1
Report w/ Appendices - no figures or exhibits
Figures
Exhibits Part A
Exhibits Part B
Phase 2

Report - no figures, exhibits, appendices
Figures - Part 1 | Part 2 | Part 3
Exhibits
Appendix A - Existing Conditions
Appendix A - Alternatives
Appendices B & C
Crystal Lake Alternative Improvements Study 2013
Narrative Report
Appendix A (minus soils analysis)
Tables
Probable Construction Costs
Lakewood-Pirateland Swash Drainage Study 2012
Phase II - Drainage Improvement Alternatives Study
Narrative Report
Figures 1-2
Figure 3
Figure 4
Figures 5-8
Tables
Probable Construction Costs
Exhibits
Phase I - Drainage Study and Technical Model
Report and Appendices A-C
Appendix D Part 1
Appendix D Part 2
Concept Study of a Flood Reduction Diversion Canal - Waccamaw River - 2009 Report and Appendices A-C

Caropines-Deerfield Drainage Studies
2008 Outfall Study: Part 1 | Part 2 | Part 3 | Part 4 | Part 5
2000 Outfall Study: Part 1 | Part 2 | Part 3
Raccoon Run Floodplain Study
Horry County Stormwater Beach Outfall Study 2001
Scientific Reports
Water Quality Study of Horry County Regional Stormwater Pond 2010
US Army Corps Singleton Swash Report 2009 Report | Appendix Part 1 | Part 2 | Part 3
Briarcliffe Acres Water Quality and Bacteria Study 2011 | Appendix A | Appendices B-F
Withers Swash Pilot Study for Genetic Source Tracking of Fecal Indicator Bacteria
USGS Report - Relation between Enterococcus concentrations and turbidity in fresh and saline recreational waters,
coastal Horry County, South Carolina, 2003-04


Environmental Monitoring
Waccamaw Watershed Academy Volunteer Water Monitoring -includes Waccamaw River, Murrells Inlet, and Surfside Beach
Coastal Carolina University's Environmental Quality Lab
US Geological Survey Real-time Stream Monitoring in SC
US Geological Survey Real-time Water Quality Data in SC
SC Dept. of Health and Environmental Control Beach Monitoring
Beach Monitoring Data Viewer - Coastal Carolina University
SC Coastal Water Monitoring Network Visualization Portal - SC Sea Grant
Groundwater Monitoring in Briarcliffe Acres - Coastal Carolina University
SC DHEC Shellfish Sanitation
Water Data at Hobcaw Barony - North Inlet-Winyah Bay National Estuarine Research Reserve
WATERS GeoViewer - US EPA
National Water Quality Council's Water Quality Portal
Rainfall and Climate
South Carolina Rainfall and Climatology
Hurricane and Weather Predictions and Tracking
NOAA Atlas 14 - Precipitation Frequency Data Server
Southeast River Forecast Center
Climate Monitoring Stations
Community Collaborative Rain, Hail, and Snow Network - Volunteer Rain Monitoring
Weather Data at Hobcaw Barony - North Inlet-Winyah Bay National Estuarine Research Reserve
Ocean Conditions and Climate
Long Bay Ocean Observing System
Long Bay Hypoxia Monitoring - Coastal Carolina University
National Oceanic and Atmospheric Administration (NOAA) Tides
Southeast Coastal Ocean Observing Regional Association (SECOORA) Data Portal
Coastal Ocean Research and Monitoring System - UNC-Wilmington
US Ocean Data
NOAA's nowCOAST Web Mapping Portal
NOAA Ocean Explorer
Singleton Swash Beach Camera - Coastal Carolina University
White Point Swash Beach Camera - Coastal Carolina University
Hobcaw Barony Oyster Landing Camera - North Inlet-Winyah Bay National Estuarine Research Reserve
GIS Data
Horry County GIS Application
Georgetown County GIS
Columbus County, NC GIS Data
Brunswick County, NC GIS Data
SC DHEC GIS Data
SC DNR GIS Data Resources
South Carolina GIS
US Geological Survey Landcover Products
US Geological Survey National Map Viewer
NOAA Digital Coast
Geospatial Data Gateway - USDA/NRCS
Community Resource Inventory Tool - Clemson University
Beach Water Quality
Horry County visitors and residents are often curious about water quality at Grand Strand beaches. For the latest in beach monitoring, use the interactive SC Beach Guide, along with links to additional water quality tools and information below.

Beach Water Quality Monitoring
SC Dept. of Health and Environmental Control Beach Monitoring
SC Beach Guide - SC DHEC (includes beach access points)
Grand Strand Beach Monitoring Data Viewer - Coastal Carolina University
Check My Beach - Grand Strand’s Guide to Swim and Beach Safety
Water Quality Tools and Information
SC Watershed Atlas - SC DHEC
WATERS GeoViewer - US EPA
Long Bay Hypoxia Monitoring (fishing piers) - Coastal Carolina University
Singleton Swash Beach Camera - Coastal Carolina University
White Point Swash Beach Camera - Coastal Carolina University
Stormwater Regulations
Federal Regulations
Clean Water Act
National Pollutant Discharge Elimination System (NPDES)
NPDES Stormwater
Stormwater Discharges from Municipal Sources

State Regulations
SC Department of Health and Environmental Control (DHEC) Bureau of Water Laws and Regulations
Coastal Zone Laws and Regulations
Stormwater Permitting
Pollution Control Act
Stormwater Management and Sediment Reduction Act (72-300)
Water Pollution Control Permits (61-9)
Horry County Code of Ordinances
Relevant Chapters:
Chapter 17.7 - Stormwater Management
Chapter 18 - Land Development Regulations
Chapter 9 - Flood Damage Prevention and Control
Chapter 10, Article II - Solid Waste Handling and Disposal
Chapter 4, Article III - Migratory Wild Fowl
Land Development Regulations
Stormwater Articles
Stormwater Low Impact Development BMPs
US EPA Stormwater Wetlands
Constructed Stormwater Wetlands - Minnesota
Infiltration Trench - Georgia
Builder's Guide to LID - Nat'l Assoc. of Homebuilders
Dollars and Sense - LID in Builder Magazine
Pathogens
Microbes and Urban Watersheds #1 - Center for Watershed Protection
Microbes and Urban Watersheds #2 - Center for Watershed Protection
Nuisance Wildlife
Canada Geese
Beavers
Septic Tank Maintenance
Homeowner's Guide to Septic Tank Maintenance - US EPA
Homeowner's Guide to Septic Tank Maintenance - Clemson
Native Plant List for South Carolina

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