Name: Commercially Navigable Waterways

Display Field: LINKNAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The Commercially Navigable Waterways (CNW) data is a subset of the National Waterway Network (NWN) as distributed by the US Army Corps of Engineers (available for download at https://www.iwr.usace.army.mil/About/Technical-Centers/NDC-Navigation-and-Civil-Works-Decision-Support/; for purposes of this data preparation NPMS used data available from the Bureau of Transportation Statistics (BTS) at https://data-usdot.opendata.arcgis.com/datasets/navigable-waterway-network-lines/explore). Lines in the NWN with a FUNC_CLASS attribute value equal to S, B, or D were extracted from the NWN and are considered by PHMSA to be commercially navigable. The data set covers the 48 contiguous states plus the District of Columbia, Hawaii, Alaska, Puerto Rico and water links between. The nominal scale of the dataset varies with the source material. The majority of the information is at 1:100,000 with larger scales used in harbor/bay/port areas and smaller scales used in open waters.

Copyright Text: The Commercially Navigable Waterways (CNW) dataset was derived from the National Waterway Network (NWN). The NWN databases were developed by Oak Ridge National Laboratory (ORNL) and Vanderbilt University, with input from the National Waterway GIS Design Committee (NWGISDC). The NWGISDC contains members from several agencies, including the U.S. Army Corps of Engineers (USACE), USDOT Bureau of Transportation Statistics (BTS), Volpe National Transportation Systems Center (VNTSC), Maritime Administration (MARAD), Military Traffic Management Command (MTMC), Tennessee Valley Authority (TVA), U.S. Environmental Protection Agency (EPA), U.S. Bureau of Census, U.S. Coast Guard, and the Federal Railroad Administration (FRA).

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -20037507.0671792
YMin: -7527363.94826808
XMax: 20037507.0671792
YMax: 11784788.3219272
Spatial Reference: 3395 (3395)

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Object ID Field: FID

Unique ID Field:

Name : FID

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Global ID Field:

Type ID Field: WTWY_TYPE

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Prototype:

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---

ID: 2
Name: Intracoastal Waterway
Domains:

Templates:

Name: Intracoastal Waterway
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

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---

ID: 3
Name: Sealane
Domains:

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Name: Sealane
Description:
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Prototype:

Attributes:

• WTWY_TYPE: 3

---

ID: 4
Name: Sealane with separation zone
Domains:

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Name: Sealane with separation zone
Description:
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Prototype:

Attributes:

• WTWY_TYPE: 4

---

ID: 5
Name: Open water
Domains:

Templates:

Name: Open water
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• WTWY_TYPE: 5

---

ID: 6
Name: River, creek, thoroughfare, lake
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Templates:

Name: River, creek, thoroughfare, lake
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---

ID: 7
Name: Estruary
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Name: Estruary
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Attributes:

• WTWY_TYPE: 7

---

ID: 8
Name: Channel
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Templates:

Name: Channel
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• WTWY_TYPE: 8

---

ID: 9
Name: Canal
Domains:

Templates:

Name: Canal
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

• WTWY_TYPE: 9

---

ID: 10
Name: Great Lakes direct link
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Templates:

Name: Great Lakes direct link
Description:
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---

ID: 11
Name: Great Lakes indirect link
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Name: Great Lakes indirect link
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---

ID: 12
Name: USACE Lock
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Name: USACE Lock
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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 10/2/2025 10:12:19 PM

Schema Last Edit Date: 10/2/2025 10:12:19 PM

Data Last Edit Date: 10/2/2025 10:12:19 PM

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