Name: Hillside Management Area (HMA)

Display Field: STATUS

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Overview:This layer shows Hillside Management areas, which are essentially anything with a 25% or greater slope. It is broken down by '25 - 50%', and 'greater than 50%' slope categories for all unincorporated areas with the following exceptions:Forest land that is not a private inholdingForest land outside of a CSD boundaryForest land outside of unincorporated community boundaries that go into the forestDeleted all polygons less than 25 sq. ft.Below is a description of the source Digital Elevation Model and Slope that went into creating this dataset.Digital Elevation Model / LAR-IAC 7:This 1 meter Digital Elevation Model (DEM) is a model of surface elevation in the County of Los Angeles developed by the Los Angeles Regional Imagery Consortium (LAR-IAC). The LAR-IAC project encompasses the entire land area of Los Angeles County in mainland plus Catalina Island. The Area of Digital Elevation Model data developed over the Urban/Suburban area mainland covers approximately 4214 square miles. Tiles were downloaded in September, 2025 from the USGS National Map: https://apps.nationalmap.gov/lidar-explorer/#/. This dataset was re-projected from the original NAD83, UTM Zone 11N projection to State Plan, CA Zone V. The grid size is 3.28 x 3.28 feet to be equivalent to 1 meter.Detailed product information (including accuracy report) is contained in the LAR-IAC7 Product Guide.We highly recommend that you visit the LAR-IAC Project Website to find a rich source of information about the data and the LAR-IAC program. The site includes project documents, full FGDC compliant metadata, data downloads of related GIS used to complete the project, sub-licensing information, sample imagery and data, and information about this acquisition.GIS Data showing flight-date information is available from the LAR-IAC Project website site, and elsewhere in the LA County GIS Data PortalUpdate History:11/30/15 - originally added to SDE10/30/25 - Loaded into SDE and replaced the former version of Hillside Management that was generated in 2006.

Copyright Text: County of Los Angeles Department of Regional Planning GIS Section LAR-IAC

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 19000.0

Max Scale: 0.0

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: 6275465.308857799
YMin: 1567361.9016430676
XMax: 6668486.1763578355
YMax: 2122131.133309722
Spatial Reference: 102645  (2229)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: STATUS
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Hillside Management Area (25% - 50%)
  Label: Hillside Management Area (25% - 50%)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [250, 161, 52, 127]
  Outline:
  N/A
• Value: Hillside Management Area (50% or greater slope)
  Label: Hillside Management Area (50% or greater slope)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [115, 76, 0, 127]
  Outline:
  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: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• STATUS ( type: esriFieldTypeString, alias: HMA Type, length: 50 )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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