View In:   ArcGIS Online Map Viewer

Name: Priority Preservation Areas

Display Field: AREA_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This GIS dataset contains Priority Preservation Areas (PPAs) adopted by counties under the Agricultural Stewardship Act of 2006. Data are collected from counties by the Maryland Department of Planning (MDP) or digitized by MDP in coordination with local jurisdictions. For more information about the Agricultural Stewardship Act of 2006, see the PPA requirement established in House Bill 2 (2006) for counties seeking state certification of their farmland preservation programs and located in §2-518 of the Agriculture Article. Certification allows a county to retain more locally generated agricultural land transfer tax for land preservation. Not all counties have PPAs.This document describes standard operating procedures for aggregating PPA GIS data. These procedures may not apply to historical data (i.e. records for which the GIS_SRC field is blank). For example, MDP may have realigned historical data from local jurisdictions to parcel polygon boundaries.MDP generally requests updated GIS data after learning of a change to a PPA. Aggregated data may be outdated or incomplete if MDP has not yet received or processed GIS updates from jurisdictions. MDP generally does not alter geometries received from the local jurisdictions.This dataset is a public resource for general information purposes. Only the PPA, as depicted in the County's Comprehensive Plan, is the official PPA. The Maryland Department of Planning cannot guarantee the accuracy of the information contained in this resource. Each user is responsible for determining its suitability for his or her intended use or purpose. The Maryland Department of Planning or the State of Maryland has no liability from any damages or interpretations caused by this resource. Any errors or omissions should be reported to Tina James, christina.james@maryland.gov.Last Updated: 2/17/2026

Copyright Text: Maryland Department of Planning, Geospatial Data and Analysis Unit, Tina James, christina.james@maryland.gov, Anne Arundel County, Baltimore County, Baltimore City, Calvert County, Caroline County, Carroll County, Cecil County, Charles County, Frederick County, Harford County, Kent County, Montgomery County, Prince George's County, Queen Anne's County, St. Mary's County, Talbot County, Washington County, Wicomico County, Worcester County.

Default Visibility: true

MaxRecordCount: 10000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

XMin: -8685639.0183
YMin: 4578592.406499997
XMax: -8370681.805600001
YMax: 4825675.335600004
Spatial Reference: 102100  (3857)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [102, 153, 205, 255]
Outline:
N/A
Label: N/A
Description: N/A
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: true
Supports Returning Geometry Centroid: true
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: false
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• JURSCODE ( type: esriFieldTypeString, alias: JURSCODE, editable: true, nullable: true, length: 4, defaultValue: null, modelName: JURSCODE , Coded Values: [ALLE: Allegany] , [ANNE: Anne Arundel] , [BACI: Baltimore City] , ...21 more... )
• AREA_NAME ( type: esriFieldTypeString, alias: Area Name, editable: true, nullable: true, length: 50, defaultValue: null, modelName: AREA_NAME )
• Certified ( type: esriFieldTypeString, alias: Certified (Yes/No), editable: true, nullable: true, length: 255, defaultValue: null, modelName: Certified )
• GIS_Acres ( type: esriFieldTypeDouble, alias: GIS Acres, editable: true, nullable: true, defaultValue: null, modelName: GIS_Acres )
• GIS_Source ( type: esriFieldTypeString, alias: GIS Source, editable: true, nullable: true, length: 255, defaultValue: null, modelName: GIS_Source )
• Source_Date ( type: esriFieldTypeString, alias: GIS Source Date, editable: true, nullable: true, length: 255, defaultValue: null, modelName: Source_Date )
• Shape__Area ( type: esriFieldTypeDouble, alias: Shape.STArea(), editable: false, nullable: true, defaultValue: null, modelName: Shape.STArea(), required: true )
• Shape__Length ( type: esriFieldTypeDouble, alias: Shape.STLength(), editable: false, nullable: true, defaultValue: null, modelName: Shape.STLength(), required: true )

Templates:

• Name: Priority Preservation Areas
  Description:
  Prototype:
  Source_Date: null
  GIS_Source: null
  JURSCODE: null
  AREA_NAME: null
  Certified: null
  GIS_Acres: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query,Extract

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Analytic   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata