{ "currentVersion": 10.91, "cimVersion": "2.9.0", "id": 414, "name": "Hillside Management Area (HMA)", "type": "Feature Layer", "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.", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102645, "latestWkid": 2229, "xyTolerance": 0.003280833333333333, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -117608900, "falseY": -91881400, "xyUnits": 3.626946669214637E7, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "County of Los Angeles\nDepartment of Regional Planning\nGIS Section\nLAR-IAC", "parentLayer": null, "subLayers": [], "minScale": 19000, "maxScale": 0, "referenceScale": 0.0, "drawingInfo": { "renderer": { "type": "uniqueValue", "field1": "STATUS", "uniqueValueInfos": [ { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 250, 161, 52, 127 ], "outline": null }, "value": "Hillside Management Area (25% - 50%)", "label": "Hillside Management Area (25% - 50%)" }, { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 115, 76, 0, 127 ], "outline": null }, "value": "Hillside Management Area (50% or greater slope)", "label": "Hillside Management Area (50% or greater slope)" } ], "fieldDelimiter": ",", "authoringInfo": { "colorRamp": { "type": "multipart", "colorRamps": [ { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 179, 168, 100, 255 ], "toColor": [ 179, 168, 100, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 127, 77, 219, 255 ], "toColor": [ 127, 77, 219, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 97, 202, 237, 255 ], "toColor": [ 97, 202, 237, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 128, 47, 74, 255 ], "toColor": [ 128, 47, 74, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 112, 250, 112, 255 ], "toColor": [ 112, 250, 112, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 62, 83, 135, 255 ], "toColor": [ 62, 83, 135, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 214, 143, 217, 255 ], "toColor": [ 214, 143, 217, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 242, 119, 97, 255 ], "toColor": [ 242, 119, 97, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 61, 173, 119, 255 ], "toColor": [ 61, 173, 119, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 245, 235, 95, 255 ], "toColor": [ 245, 235, 95, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 84, 128, 128, 255 ], "toColor": [ 84, 128, 128, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 131, 164, 242, 255 ], "toColor": [ 131, 164, 242, 255 ] }, { "type": "algorithmic", "algorithm": "esriCIELabAlgorithm", "fromColor": [ 247, 158, 173, 255 ], "toColor": [ 247, 158, 173, 255 ] } ] } } }, "scaleSymbols": true, "transparency": 0, "labelingInfo": null }, "defaultVisibility": false, "extent": { "xmin": 6275465.308857799, "ymin": 1567361.9016430676, "xmax": 6668486.1763578355, "ymax": 2122131.133309722, "spatialReference": { "wkid": 102645, "latestWkid": 2229, "xyTolerance": 0.003280833333333333, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -117608900, "falseY": -91881400, "xyUnits": 3.626946669214637E7, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "STATUS", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "OBJECTID", "type": "esriFieldTypeOID", "alias": "OBJECTID", "domain": null }, { "name": "STATUS", "type": "esriFieldTypeString", "alias": "HMA Type", "length": 50, "domain": null }, { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape", "domain": null }, { "name": "Shape.STArea()", "type": "esriFieldTypeDouble", "alias": "Shape.STArea()", "domain": null }, { "name": "Shape.STLength()", "type": "esriFieldTypeDouble", "alias": "Shape.STLength()", "domain": null } ], "geometryField": { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape" }, "indexes": [ { "name": "R39_pk", "fields": "OBJECTID", "isAscending": true, "isUnique": true, "description": "" }, { "name": "STATUS_IDX", "fields": "STATUS", "isAscending": true, "isUnique": false, "description": "" }, { "name": "S34_idx", "fields": "Shape", "isAscending": true, "isUnique": true, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 2000, "supportsStatistics": true, "supportsExceedsLimitStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON, PBF", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "supportedSpatialRelationships": [ "esriSpatialRelIntersects", "esriSpatialRelContains", "esriSpatialRelCrosses", "esriSpatialRelEnvelopeIntersects", "esriSpatialRelIndexIntersects", "esriSpatialRelOverlaps", "esriSpatialRelTouches", "esriSpatialRelWithin", "esriSpatialRelRelation" ], "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsPercentileStatistics": true, "supportsHavingClause": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsCountDistinct": true, "supportsPagination": true, "supportsLod": false, "supportsQueryWithLodSR": false, "supportsTrueCurve": true, "supportsQueryWithDatumTransformation": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true, "supportsTimeRelation": true, "supportsSqlFormat": false, "supportsQueryAnalytic": true }, "supportsDatumTransformation": true, "advancedQueryAnalyticCapabilities": { "supportsLinearRegression": true, "supportsAsync": false, "supportsPercentileAnalytic": true }, "dateFieldsTimeReference": { "timeZone": "Pacific Standard Time", "respectsDaylightSaving": true }, "preferredTimeReference": null, "datesInUnknownTimezone": false, "hasGeometryProperties": true, "geometryProperties": { "shapeAreaFieldName": "Shape.STArea()", "shapeLengthFieldName": "Shape.STLength()", "units": "esriFeet" }, "hasMetadata": true, "isDataArchived": false, "archivingInfo": { "supportsQueryWithHistoricMoment": false, "startArchivingMoment": -1 }, "supportsCoordinatesQuantization": true, "supportsDynamicLegends": true }