Stormwater and Watershed Management

Town of Navassa Stormwater Management Program

The Town of Navassa is the owner and operator of Permit Number NCS00518 to discharge stormwater from the municipal separate storm sewer system (MS4) under the National Pollutant Discharge Elimination System (NPDES).

The purpose of this Stormwater Management Plan (SWMP) is to establish and define the means by which the Town of Navassa will comply with its NPDES MS4 Permit and the applicable provisions of the Clean Water Act to meet the federal standard of reducing pollutants in stormwater runoff to the maximum extent practicable.

Permits, Plans and Ordinance

Draft Permit No. NCS000518

Draft Stormwater Management Plan

Phase II Stormwater Ordinance


Stormwater Permit Fees

Stormwater Permit Application

Stormwater Review Process

1) What is Stormwater Management?

Stormwater runoff is generated from rain and snowmelt events that flow over land or impervious surfaces, such as paved streets, 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, use stormwater controls, known as best management practices (BMPs). These BMPs filter out pollutants and/or prevent pollution by controlling it at its source.

The purpose of the Town of Navassa's Phase II Stormwater Ordinance is to protect, maintain and enhance the public health, safety, environment, and general welfare by establishing minimum requirements and procedures to control the adverse effects of increased post-development stormwater runoff and nonpoint and point source pollution associated with new development and redevelopment (as well as illicit discharges into municipal stormwater systems).

Resources Available in the Town of Navassa

Homeowners: Individuals can manage stormwater at their homes through simple green projects that make for great family projects. For example, rain gardens are shallow vegetated basins next to areas of impervious surfaces. For a How-To Guide for creating a rain garden, see this Residential Rain Garden Flyer.

Industries: Companies can manage stormwater through common green infrastructure. For example, retention basins retain runoff, thus reducing peak flows and permeable pavement is pervious concrete and porous asphalt designed to permit the infiltration of stormwater into the ground.

Municipal: The Town of Navassa can manage stormwater through regional projects. For example, constructed Wetlands are engineered systems that channel runoff through vegetated path and remove pollutants through the soil.

This brochure provides a summary of useful tips for homeowners, business owners, and municipalities.

2) How can you be Participate?

EPA recommends that the public be included in developing, implementing, and reviewing the storm water management program and that the public participation process should make efforts to reach out and engage all economic and ethnic groups. Opportunities for members of the public to participate in program development and implementation include serving as citizen representatives on a local storm water management panel, attending public hearings, working as citizen volunteers to educate other individuals about the program, assisting in program coordination with other pre-existing programs, or participating in volunteer monitoring efforts.

Currently, the Town of Navassa is participating in the Resilient Coastal Community Program (RCCP) which aims to facilitate a community-driven process for setting coastal resilience goals, assessing existing and needed local capacity, and identifying and prioritizing projects to enhance community resilience to coastal hazards. Participating communities will walk through a framework leading to the development of “shovel-ready” projects. The town is currently in the first two phases of 1) Community Engagement and Risk Assessments and 2) Planning for Project Selection and Prioritization. Currently, a Community Action Team has been created, made up of community members and subject matter experts, in an effort to get local input on the town's needs. See Watershed Section Below.

Additionally, the following are tips for improving local stormwater conditions:

Do not mow stormwater ditches. Vegetation in stormwater ditches slows down the speed that water moves in the system. Slower stormwater means more infiltration can occur and reduces the risk of erosion of ditch banks. Taller and more robust vegetation is more effective at slowing the velocity of stormwater than mowed grasses and vegetation. Also, taller vegetation is usually healthier and less prone to disease and will better resist erosion.

Keep stormwater drains and ditches clean of debris and trash. Debris like limbs and leaves can clog storm ditches, drains, and culverts, preventing proper stormwater drainage and causing yards and streets to flood. Trash can also clog stormwater drainage systems, and it can pollute stormwater and litter creeks and streams.

Collect pet waste. Pet and human waste in stormwater are a leading cause of the bacteria that cause shellfishing closures and beach closures. Already, the waters around Navassa are closed to shellfishing. Picking up after pets may help improve water quality to one day permit shellfishing again. Or it may at least prevent water quality from degrading further and closing Navassa's rivers and streams to human contact.

Reduce or eliminate the use of fertilizer. Lawn and garden fertilizer contains high levels of nitrogen, a primary pollutant in stormwater that causes algal blooms and fish kills. When using fertilizers, make sure to read the instructions and do not use more than is recommended. Another option is to use native plants in landscaping. Native plants are drought resistant and typically require no fertilizer to thrive in our climate.

Ensure proper septic system function. For residents on septic systems, proper septic function is critical for protecting water quality. Failed septic systems not only pollute stormwater that drains to creeks and streams, they also can pollute groundwater and nearby wells that rely on groundwater for home water use. Perform routine maintenance on your system and immediately notify Town Hall if your septic system fails.

5) What else can be done?

Public Comments

The Town of Navassa encourages residents to comment on stormwater facilities within the community. If you have any comments or concerns regarding any stormwater facility in the community, please fill out the form below.

Public Comment Form for Stormwater Suggestions or Concerns

Provided below are links to Stormwater Pollution Prevention Plans :

Stormwater Pollution Prevention for Small Residential Construction Sites

Protecting Water Quality from Urban Runoff

4) Do you need to report a Spill?

An illicit discharge is the discharge, emission, disposal, pouring, or pumping directly or indirectly any liquid, solid, gas, or other substance, other than stormwater to any stormwater conveyance, the waters of the State, or upon the land in a manner or amount that the substance is likely to reach a stormwater conveyance or the waters of the State is prohibited. Prohibited substances include: oil, anti-freeze, chemicals, animal waste, paints, garbage, debris, or litter.

Non-stormwater discharges associated with the following activities are allowed provided that they do not significantly impact water quality: Water line flushing, landscape irrigation, diverted stream flows, rising ground waters, uncontaminated ground water infiltration (as defined at 40 CFR 35.2005(20)), uncontaminated pumped ground water, discharges from potable water sources, foundation drains, air conditioning condensation, irrigation water, springs, water from crawl space pumps, footing drains, lawn watering, individual residential car washing, flows from riparian habitats and wetlands, and dechlorinated swimming pool discharges.

If you need to report an illicit dischage, call the Navassa Stormwater Hotline at 910-371-2432 ext 104 or submit a Public Report to the Stormwater Administrator at Additionally, call the North Carolina Department of Natural Resources STOP MUD Hotline 1-866-STOPMUD (786-7683) if you observe any erosion or sedimentation problems in Navassa.

3) Planning for Construction?

It has been determined that proper management of construction-related and post-development stormwater runoff will minimize damage to public and private property and infrastructure; safeguard the public health, safety, and general welfare; and protect water and aquatic resources.Therefore, the following statements apply to:

1)  All development and redevelopment in which the total land disturbance is one acre or more;

2)  All non-residential development or redevelopment that will add 10,000 square feet or more of built upon area irrespective of the condition of the existing surface upon which the impervious surface area is created;

3) All development or redevelopment in which the total land disturbance is less than one acre and does not add 10,000 square feet or more of built upon area if such activities are part of a larger common plan of development or sale, even though multiple, separate or distinct activities take place at different times or different schedules; and

4) All development or redevelopment that requires a CAMA major permit or a Sedimentation/Erosion Control Plan.

Pre-Construction: As an MS4 community, the Town of Navassa will require a Stormwater Permit Once the stormwater permit is issued then construction of the stormwater BMPs can begin and the property owner must sign an Operations and Maintenance agreement (Sec. 1-55) before any of the building permits are issued. Once the Operations and Maintenance agreement is approved then building permits may be issued and subdivision infrastructure installed pursuant to any approved preliminary plat.

During Construction: All stormwater control measures and stormwater treatment practices (also referred to as Best Management Practices, or BMPs) required under this ordinance shall be evaluated by the Stormwater Administrator according to the policies, criteria, information, technical specifications, standards, and the specific design criteria for each stormwater practice in the Design Manuals. The Stormwater Administrator shall determine whether BMPs in the plan will be adequate to meet the requirements of this ordinance. Additionally, an Erosion and Sediment Control Permit from the State must be in hand prior to any physical land development activity.

Post-Construction: Upon Completion of the project and before a certificate of occupancy is granted, the applicant certifies the project is in accordance with approved stormwater management plans and designs and submits as-built drawings for all facilities or practices. As-built drawings must be certified under a professional seal of the designer. No certificate of occupancy will be issued without final as-built drawings, a final inspection & approval by Stormwater Administrator. For subdivisions a final plat must also be approved before the certificate of occupancy will be issued.

For additional information, refer to the Brunswick County Low Impact Development Guidance Manual.

Town of Navassa Watershed Management Program

Navassa has been awarded financial assistance in the form of technical resources on behalf of the N.C. Division of Coastal Management’s (DCM) Resilient Coastal Communities Program (RCCP). The RCCP will advance coastal resilience efforts throughout the 20 coastal communities in North Carolina. The objectives of this program include:

Address barriers to coastal resilience in North Carolina at the local level, such as limited capacity, economic constraints, and social inequities;
Assist communities with risk and vulnerability assessments and developing a portfolio of planned and prioritized projects;
Advance coastal resilience projects to shovel-readiness, or ready for implementation; and
Link communities to funding streams for project implementation.

DCM has partnered Moffatt & Nichol, our selected contractor, with the Town of Navassa to conduct a Risk & Vulnerability Assessment. This website will function as a storing house of all project-related information and a means for you to contribute in a meaningful way.

You can find out more about this project by reading our project information fact sheet.

Program Sponsor

Thank you to N.C. Division of Coastal Management (DCM)’s North Carolina Resilient Coastal Communities Program (RCCP) for providing technical and financial assistance to advance coastal resilience efforts for the Town of Navassa. This program is funded in collaboration by:

Stay Connected

Below are several ways you can stay engaged in our project efforts:

  1. Subscribe to our mailing list. Sign up for the latest updates and other information as they become available by completing this simple form.
  2. Visit our project website often. We will continually update the project website with the latest information and news, including the project schedule and resources available for download (please see available resources and downloads section below).
  3. Get social! Connect with us on social media by following the Town of Navassa on Facebook, Twitter and Instagram.
  4. Email us. Have a question, comment or concern? Please contact us via email and we'll respond
    in a timely manner.

The Process Forward
The following project milestones outline our estimated seven-month planning process and highlights specific timeframes when our public meeting and other public involvement opportunities are expected to occur. These dates may change as the project moves forward so please check back for updates.

CAT Meeting #1 - July 2021                                                          Planning Resources
Public Survey – July/August 2021                                                      North Carolina Resilient Coastal Communities Handbook
Public Meeting #1 – August 2021                                                     Local Planning Documents
Draft Presentation to City – September 2021                              Southeastern North Carolina Regional Hazard Mitigation
CAT Meeting #2 – October 2021
Final Presentation to City – December 2021                         FEMA Guidelines and Fact Sheets
CAT Meeting #3 – January 2021                                                         Mitigation Ideas

                                                                                                                       Flooding Fact Sheet for Kids

                                                                                                                        Integrating Hazard Mitigation into Local Planning
Available Presentations and Downloads                                          Integrating Historic Properties
Please find below links to our presentations and                         National Flood Insurance Program Fact Sheet
downloads. We will continue to add to this archive                     Nature Based Solutions
as materials are prepared, refined, and released.

                                                                                                                National Park Service

Presentations & Downloads                                                                 NPS Flood Adaptation Guidelines

Public Meeting Slides                                                               Additional Resources

Meetings & Minutes                                                                           For more information about relevant data sources and
CAT Meeting 1 Minutes                                                            other tools for understanding flood risk, including the
Public Meeting Minutes                                                            effects of storm surge, coastal flooding, and sea level
CAT Meeting 2 Minutes                                                            rise, please visit the following state and national
CAT Meeting 3 Minutes                                                            websites:
Survey Results