Layer: Marsh Units - Alteration Status

View In: Map Viewer

Name: Marsh Units - Alteration Status - SLAMM

Display Field: Ditches

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The 2015 LU/LC data set is the sixth in a series of land use mapping efforts that was begun in 1986. Revisions and additions to the initial baseline layer were done in subsequent years from imagery captured in 1995/97, 2002, 2007, 2012 and 2015. This present 2015 update was created by comparing the 2012 LU/LC layer from NJDEP's Geographic Information Systems (GIS) database to 2015 color infrared (CIR) imagery and delineating and coding areas of change. Work for this data set was done by Aerial Information Systems, Inc., Redlands, CA, under direction of the New Jersey Department of Environmental Protection (NJDEP), Bureau of Geographic Information System (BGIS). LU/LC changes were captured by adding new line work and attribute data for the 2015 land use directly to the base data layer. All 2012 LU/LC polygons and attribute fields remain in this data set, so change analysis for the period 2012-2015 can be undertaken from this one layer. The classification system used was a modified Anderson et al., classification system. An impervious surface (IS) code was also assigned to each LU/LC polygon based on the percentage of impervious surface within each polygon as of 2015. Minimum mapping unit (MMU) is 1 acre. ADVISORY: This metadata file contains information for the 2015 Land Use/Land Cover (LU/LC) data sets, which were mapped by USGS Subbasin (HU8). There are additional reference documents listed in this file under Supplemental Information which should also be examined by users of these data sets. As stated in this metadata record's Use Constraints section, NJDEP makes no representations of any kind, including, but not limited to, the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the digital data layers furnished hereunder. NJDEP assumes no responsibility to maintain them in any manner or form. By downloading this data, user agrees to the data use constraints listed within this metadata record.

Copyright Text: NJ Department of Environmental Protection (NJDEP), Division of Information Technology (DOIT), Bureau of Geographic Information System (BGIS)

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field:

Type ID Field: AlterationStatus

Fields:

OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
MarshUnitID (type: esriFieldTypeInteger, alias: MarshUnitID, SQL Type: sqlTypeOther, nullable: true, editable: true)
Ditches (type: esriFieldTypeString, alias: Ditches, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
OMWM (type: esriFieldTypeString, alias: Open Marsh Water Management, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
AlterationStatus (type: esriFieldTypeString, alias: Alteration Status, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
Acres (type: esriFieldTypeSingle, alias: Acres, SQL Type: sqlTypeOther, nullable: true, editable: true)
UVVRMean (type: esriFieldTypeDouble, alias: Mean of Unvegetated Marsh to Marsh Ratio, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentRegFloodMarsh (type: esriFieldTypeSingle, alias: Percent Regularly Flooded Marsh, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentIrregFloodMarsh (type: esriFieldTypeSingle, alias: Percent Irregularly Flooded Marsh, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentTransSaltMarsh (type: esriFieldTypeSingle, alias: Percent Transitional Salt Marsh, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentTidalFreshMarsh (type: esriFieldTypeSingle, alias: Percent Tidal Fresh Marsh, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentTidalFlat (type: esriFieldTypeSingle, alias: Percent Tidal Flat, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentEstBeach (type: esriFieldTypeSingle, alias: Percent Estuarine Beach, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentWater (type: esriFieldTypeSingle, alias: Percent Water, SQL Type: sqlTypeOther, nullable: true, editable: true)
PercentUpland (type: esriFieldTypeSingle, alias: Percent Upland, SQL Type: sqlTypeOther, nullable: true, editable: true)
PondFillCubicYds (type: esriFieldTypeSingle, alias: Pond Fill Cubic Yards, SQL Type: sqlTypeOther, nullable: true, editable: true)
TLP3inCubicYds (type: esriFieldTypeSingle, alias: TLP 3 inches Cubic Yards, SQL Type: sqlTypeOther, nullable: true, editable: true)
TLP6inCubicYds (type: esriFieldTypeSingle, alias: TLP 6 inches Cubic Yards, SQL Type: sqlTypeOther, nullable: true, editable: true)
TLP12inCubicYds (type: esriFieldTypeSingle, alias: TLP 12 inches Cubic Yards, SQL Type: sqlTypeOther, nullable: true, editable: true)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Types:

AlterationStatus: Absent

AlterationStatus: Limited

AlterationStatus: Partial

AlterationStatus: Major

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/29/2025 2:34:53 PM

Schema Last Edit Date: 7/17/2025 2:59:44 PM

Data Last Edit Date: 7/17/2025 2:59:44 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat

Layer: Marsh Units - Alteration Status - SLAMM (ID:0)