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Outer Banks

geography Maturity 7-9 Next article →

The Outer Banks, often abbreviated as OBX, is a string of barrier islands and spits.

NCOuterBanks-EO
NCOuterBanks-EO

These landforms sit off the coast of North Carolina and southeastern Virginia. They function as barrier islands, which means they protect the mainland from ocean waves.

NOAA- Outer Banks
NOAA- Outer Banks

They separate the Atlantic Ocean from several large bodies of water. These include Currituck Sound, Albemarle Sound, and Pamlico Sound. The islands create a buffer between the open sea and the coastal mainland.

The geography of the region is highly dynamic and constantly shifting. These islands are not anchored to offshore coral reefs.

NASA-OuterBanks-NorthCarolina-ISS-20190423
NASA-OuterBanks-NorthCarolina-ISS-20190423

Because of this, they are very vulnerable to coastal erosion and sea level rise. The islands may drift several feet each year. Scientists have different theories about this movement. Some believe the islands are shrinking in width. Others suggest they are moving further inland or sinking into the ocean. This constant change is a key part of the region's physical nature.

Storms play a massive role in shaping the coastline through a process called breaching. When violent storms occur, they can create new inlets. Older inlets often close as sands shift during beach evolution. A famous example occurred on September 18, 2003. Hurricane Isabel cut Hatteras Island in half. It created Isabel Inlet, which was 2,000 feet wide and 15 feet deep. This channel washed directly through Hatteras Village. The U.S. Army Corps of Engineers later repaired the tear using sand dredging. Hurricane Irene caused another breach in 2011.

The Outer Banks consists of several distinct islands and peninsulas. From north to south, these include Bodie Island, Pea Island, Hatteras Island, Ocracoke Island, Portsmouth Island, and the Core Banks.

Brodie Island Lighthouse
Brodie Island Lighthouse

Bodie Island was once an island but is now a peninsula. This change happened because tropical storms closed the inlets that once separated it. The northern part of the banks, from Oregon Inlet northward, is actually part of the North American mainland. This is because the northern inlets of Bodie Island and Currituck Banks no longer exist.

Traveling through this region requires specific infrastructure due to the water barriers. There are three main state highway bridges connecting the islands to the mainland. These are the Wright Memorial Bridge, the William B. Umstead Bridge, and the Virginia Dare Memorial Bridge.

OBX Duck Sunset
OBX Duck Sunset

For other areas, travelers must use ferries. The North Carolina Department of Transportation Ferry Division operates several routes. These connect places like Ocracoke to Swan Quarter or Cedar Island. Some areas, like Carova Beach, are only accessible by four-wheel drive vehicles. Highway 12 is the main road for many popular communities.

The ecosystem supports diverse plant and animal life. The vegetation includes sea grasses, beach grasses, and shrubs.

Jockeys ridge state park
Jockeys ridge state park

You can find dwarf palmettos and various types of yucca growing here. The Yaupon Holly is also native to the area. Native Americans used the roasted leaves of this plant to make a caffeinated beverage. The islands are also famous for feral horses known as "banker ponies."

OBX Avon
OBX Avon

Local legend says these horses descended from Spanish mustangs that washed ashore from shipwrecks centuries ago.

History and modern challenges define the Outer Banks today. The region is famous as the site of the first controlled, powered, heavier-than-air flight. This happened on December 17, 1903, at Kill Devil Hills. The area is also called the "Graveyard of the Atlantic" due to hundreds of shipwrecks.

GraveyardoftheAtlanticMuseum
GraveyardoftheAtlanticMuseum

Today, the region faces high costs for maintenance. Between 2012 and 2022, the Department of Transportation spent over $33 million on disaster repairs. A new 7-mile bridge is planned for 2026 to help with emergency evacuations.

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🖼️ Images & Media (8)
File:NCOuterBanks-EO.jpg
NCOuterBanks-EO.jpg
File:NASA-OuterBanks-NorthCarolina-ISS-20190423.jpg
NASA-OuterBanks-NorthCarolina-ISS-20190423.jpg
File:NOAA- Outer Banks.jpg
NOAA- Outer Banks.jpg
File:GraveyardoftheAtlanticMuseum.JPG
GraveyardoftheAtlanticMuseum.JPG
File:OBX Duck Sunset.jpg
OBX Duck Sunset.jpg
File:Brodie Island Lighthouse.jpg
Brodie Island Lighthouse.jpg
File:OBX Avon.jpg
OBX Avon.jpg
File:Jockeys ridge state park.jpg
Jockeys ridge state park.jpg
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