48321 - Inland Water Transportation

In the vast landscape of transportation and logistics, NAICS Code 48321 - Inland Water Transportation plays a vital role in moving goods and passengers efficiently across the nation's rivers, canals, and other inland waterways. Whether you’re a business owner, government contractor, or simply curious about this industry, understanding this NAICS code is key to navigating the inland water transport sector in the United States.

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What is NAICS Code 48321? | Inland Water Transportation Definition

NAICS Code 48321 refers to establishments primarily engaged in the transportation of passengers or cargo over inland waterways, such as rivers, canals, and lakes. This classification covers a range of water-based transportation services operated within the inland water routes of the U.S.

Key Activities Covered:

• Operating barges for freight transport
• Towboat operations pushing or pulling barges
• Providing inland ferry services for passengers and vehicles

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Sector Overview: Transportation and Warehousing

NAICS 48321 falls under the broader Sector 48-49: Transportation and Warehousing, which encompasses industries that provide various forms of passenger and freight transportation, as well as warehousing and storage for goods.

Typical Business Types Under NAICS 48321

• Barge Transportation Services: Companies transporting bulk commodities (coal, grain, petroleum) on barges across inland waterways.
• Towboat Operations: Firms providing the propulsion and maneuvering services by using towboats to move barge tows.
• Inland Ferry Services: Operators running ferries that shuttle passengers, vehicles, and goods across rivers or lakes.

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NAICS 48321 Size Standards for Business Eligibility

To qualify as a small business under NAICS code 48321 for government contracting and SBA programs, businesses must meet specific size standards established by the U.S. Small Business Administration (SBA):

NAICS Code	Industry Title	Size Standard
48321	Inland Water Transportation	Maximum of 500 employees OR $41.5 million in average annual receipts

Note: Size standards can vary depending on contract type and other program requirements. Always check the latest SBA guidelines.

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Code Details Overview: NAICS 48321 Inland Water Transportation

NAICS Code	Title	Sector	Description	Typical Activities
48321	Inland Water Transportation	Transportation & Warehousing	Establishments primarily engaged in transporting cargo or passengers over inland waterways.	Barge movement, towboat services, inland ferries

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Common Examples of Businesses Using NAICS 48321

• Mississippi River Barge Lines — Specializing in bulk commodity transport via barge.
• Towboat Operators Inc. — Offering towboat and pushboat services to move barges efficiently.
• River Valley Ferries — Providing passenger and vehicle ferrying across inland waterways.

These businesses drive regional commerce by leveraging the cost-effective and environmentally friendly inland water routes, often complementing rail and road transportation networks.

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Frequently Asked Questions (FAQs) About NAICS 48321

What types of cargo are commonly transported in inland water transportation?

Bulk commodities like coal, grain, petroleum products, chemicals, and construction materials are the primary goods moved via inland water transportation.

How does inland water transportation benefit logistics operations?

It offers cost efficiency, reduced congestion on highways, lower emissions, and reliability for large volume freight over long distances inland.

Can passenger transportation services be included under NAICS 48321?

Yes, ferry services transporting passengers and vehicles across inland waterways are part of this classification.

Where can businesses find contracts related to NAICS 48321?

Federal and state government procurement portals often list opportunities related to inland water transportation, especially for infrastructure projects, disaster response, and commercial freight movement.

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Final Thoughts

NAICS Code 48321 - Inland Water Transportation represents a critical component of the United States’ transportation infrastructure. Businesses engaged in barge operations, towboat services, and inland ferries support economic growth by ensuring the smooth and efficient movement of people and goods along America’s waterways.

For companies looking to explore or expand in this sector, understanding the specifics of NAICS 48321, including size standards and typical activities, is essential to navigating government contracting opportunities and industry requirements.

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