Drainage, Stormwater, and Erosion & Sedimentation Control
Wake County Environmental Services does NOT regulate Drainageway or Watershed Buffers. They are regulated by Wake County Planning's Zoning section. Please contact them with any questions regarding these types of buffers.
What is stormwater?
Stormwater is rain or snow melt. Excess water that cannot infiltrate into the soil or be absorbed by vegetation flows through pipes, gutters, channels or over land. It washes pollutants like soil, litter, leaked automotive fluids, fertilizers, detergents and bacteria into our creeks, rivers, lakes and oceans. In heavy storms, it can cause flash flooding and exacerbate drainage problems.
Why does stormwater need to be managed?
Stormwater runoff is now the leading source of water pollution in our country. It can increase erosion and formation of gullies in upland areas, increase in-stream scour and erosion, increase sediment deposition in lower areas, degrade water quality, create peak storm flows that are higher and faster, and cause more frequent flooding. In urban areas that have significant amounts of impervious surfaces, and in areas that are cleared of vegetation, the effects of stormwater runoff are much greater than in areas where soil and vegetation can absorb excess water.
Do builders have to control erosion and sediment on their construction sites?
Yes. Disturbances of less than 1 (one) acre to have a driveway with a minimum 10-foot-wide by 30-foot-long gravel construction pad or equal; and a silt fence of a type acceptable to the Wake County Sedimentation and Erosion Control Section. Seeding and mulching of any applicable disturbed area is required. Areas within 25 feet of the edge of pavement or gravel of the road must be stabilized before the issuance of a certificate of occupancy.
My neighborhood lake has turned cloudy. What is causing this?
You may be observing turbidity, which are suspended solids in the water. Turbidity occurs when fine suspended particles of clay, silt, organic and inorganic matter, plankton and other microscopic organisms are picked up by water as it passes through a watershed. Turbidity levels are typically much higher in water from surface water sources such as streams, rivers and lakes than from groundwater sources. Some surface water sources exhibit high turbidity levels during periods of high rainfall.
Construction sites can also affect the turbidity of surface waters. Wake County regulates and inspects construction sites and requires that all disturbed soil be controlled through approved Best Management Practices (BMPs) to prevent sediment from directly entering local water systems. If maintained properly, these BMPs can also help to control turbidity.
If you are worried that a lake or stream is affected by adverse turbidity or sediment loss, please contact Wake County, and we will investigate the problem.
Are there any laws that pertain to drainage?
The General Law in North Carolina states that the person on the lower estate must receive and pass the water from the higher estate(s). Also, specific statutes prohibit the blockage of streams, drainageways and easements that remove water from higher elevations. For more specific information on the statutes go to www.ncga.state.nc.us.
Who is responsible for the cost to repair a drainage easement?
The property owner is ultimately responsible, unless responsibility is explicitly assigned to another party (i.e.: builder, former property owner, etc.) in a signed legal contract/document.
Who is responsible for maintaining drainage easements?
Individual property owners are responsible for the maintenance of any portion of a recorded drainage easement that is located on their property. For example, if a 20' drainage easement is located straight down a property line, each property owner is responsible for the 10' of the easement that is on his or her property.
Can my neighbor direct his water onto my land?
If the higher landowner unreasonably diverts the flow of runoff, increases the flow, or contaminates the runoff in a way that causes material damage to the lower landowner, then the lower landowner can bring an action for an injunction and damages.
What can be done with the water once it enters my property?
The water can be addressed in any manner, so long as no blockage, impediment or obstruction occurs and it is discharged at or near the predominant low point of your property.
Where can I get advice about alleviating my drainage problem?
Wake County's Stormwater Management Program does provide limited technical assistance with drainage matters; however, it is highly recommended that one hire a private consultant.
How do I know who to contact for specific questions regarding stormwater and/or erosion control permitting and inspections or property complaints?
Wake County staff is assigned by watershed. See the City of Raleigh iMaps
for an interactive map showing Watershed Managers by area. Locate your property in questions, see the Environmental layer and turn on the Watershed sublayer for Watershed Manager work areas.
*Note: You must comply with all State and Local Wastewater regulations*