Name: Linear Ditching

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: The canal and ditching data layer was created to identify the presence and quantity of manmade linear alterations (ex. mosquito ditching) on coastal marshes. Ditching was quantified in miles of ditching per one square mile cell of marsh, and further quantified by estimating the density of ditching per square acre of marsh. This vector dataset does not identify all ditching features on the marshes; however, it is the most complete data set of these features that is publically available. This data layer was identified and extracted from the United States Geological Survey’s (USGS) National Hydrography High Resolution (NHD-HR) vector dataset for New Jersey, NHD_H_34 (https://nhd.usgs.gov/data.html). These manmade alterations were selected by querying features labeled as ‘CANAL/DITCH’ in the ‘FType’ attribute field. The USGS ‘Standards for National Hydrography Dataset – High Resolution’ document defines ‘CANAL/DITCH’ as, “An artificial open waterway constructed to transport water, to irrigate or drain land, to connect two or more bodies of water, or to serve as a waterway for watercraft.” (12/19/2011, NHD Standards).

Copyright Text: Stockton University - Coastal Research Center 30 Wilson Ave. Port Republic, NJ 08241 E-mail: crc@stockton.edu Phone: (609) 652-4245 GIS DATA CITATIONS: National Hydrography Dataset- High Resolution, New Jersey Department of Environmental Protection (NJDEP), Office of Information Resources Management (OIRM), Bureau of Geographic Information Systems (BGIS). 2010. National Hydrography Dataset (NHD) Waterbody 2002. NJDEP, Trenton, NJ. Vector digital data for NHD ID H34. Last Accessed March, 2017. https://nhd.usgs.gov/index.html

Default Visibility: false

MaxRecordCount: 100000

Supported Query Formats: JSON, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -8341606.4112865105
YMin: 4712467.295447742
XMax: -8243348.220543799
YMax: 4885841.909492873
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
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Width: 1
Label:
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Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false

HasZ: true

HasM: true

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: FID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• NAME ( type: esriFieldTypeString, alias: NAME, length: 7 )
• DIST_Miles ( type: esriFieldTypeDouble, alias: DIST_Miles )
• Shape_Leng ( type: esriFieldTypeDouble, alias: Shape_Leng )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )

Supported Operations:   Query   Generate Renderer   Return Updates

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