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The surface area draining to each debris flow traversal corridor is delineated from the confluence of the corridor with a fish-bearing stream. The delineated area defines a subbasin within the much larger 4th-field HUC analysis basin. Within each subbasis, the initiation sites for debris flows that can carry material to the fish-bearing stream at the subbasin mouth are mapped. These are the sediment source areas for that subbasin. Within each subbasin, the highest 33% of the mean annual deliveered sediment (source areas) is defined as the \"Sediment Source Areas\".<\/SPAN><\/P><\/DIV>", "mapName": "DesignatedSedimentSourceArea", "description": "

The surface area draining to each debris flow traversal corridor is delineated from the confluence of the corridor with a fish-bearing stream. The delineated area defines a subbasin within the much larger 4th-field HUC analysis basin. Within each subbasis, the initiation sites for debris flows that can carry material to the fish-bearing stream at the subbasin mouth are mapped. These are the sediment source areas for that subbasin. Within each subbasin, the highest 33% of the mean annual deliveered sediment (source areas) is defined as the \"Sediment Source Areas\".<\/SPAN><\/P><\/DIV>", "copyrightText": "Private Forest Accord Steep Slope Prescriptions; please refer to Appendix B: Delineating Landslide and Debris Flow Susceptibility in the Private Forest Accord (2022) Report.", "supportsDynamicLayers": true, "layers": [ { "id": 1, "name": "Designated Sediment Source Area", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon", "supportsDynamicLegends": true } ], "tables": [], "spatialReference": { "wkid": 2992, "latestWkid": 2992, "xyTolerance": 0.0032808398950131233, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -118489100, "falseY": -97381100, "xyUnits": 3048, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 }, "singleFusedMapCache": false, "initialExtent": { "xmin": 389059.4322583445, "ymin": 690035.4297765397, "xmax": 397005.02096187347, "ymax": 697026.799428546, "spatialReference": { "wkid": 2992, "latestWkid": 2992, "xyTolerance": 0.0032808398950131233, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -118489100, "falseY": -97381100, "xyUnits": 3048, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "fullExtent": { "xmin": 254390.42125983536, "ymin": 102961.93635170162, "xmax": 1003954.0436351746, "ymax": 1634286.818241477, "spatialReference": { "wkid": 2992, "latestWkid": 2992, "xyTolerance": 0.0032808398950131233, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -118489100, "falseY": -97381100, "xyUnits": 3048, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "minScale": 0, "maxScale": 0, "units": "esriFeet", "supportedImageFormatTypes": "PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP", "documentInfo": { "Title": "Designated Sediment Source Area", "Author": "", "Comments": "

The surface area draining to each debris flow traversal corridor is delineated from the confluence of the corridor with a fish-bearing stream. The delineated area defines a subbasin within the much larger 4th-field HUC analysis basin. Within each subbasis, the initiation sites for debris flows that can carry material to the fish-bearing stream at the subbasin mouth are mapped. These are the sediment source areas for that subbasin. Within each subbasin, the highest 33% of the mean annual deliveered sediment (source areas) is defined as the \"Sediment Source Areas\".<\/SPAN><\/P><\/DIV>", "Subject": "Within Debris Flow Traversal Area Subbasins, the sediment source area zones that contribute the highest 33% of the proportion of mean annual delivered sediment and are greater than ΒΌ acre in size are classified as \u201cDesignated Sediment Source Areas\".", "Category": "", "AntialiasingMode": "Fast", "TextAntialiasingMode": "Force", "Keywords": "ODF,Oregon,Oregon Department of Forestry,PFA,Private Forest Accord,Steep Slopes,Topography,Forest Resources" }, "supportsQueryDomains": true, "capabilities": "Map,Query,Data", "supportedQueryFormats": "JSON, geoJSON, PBF", "exportTilesAllowed": false, "referenceScale": 0.0, "datumTransformations": [ { "geoTransforms": [ { "wkid": 108190, "latestWkid": 108190, "transformForward": true, "name": "WGS_1984_(ITRF00)_To_NAD_1983" } ] }, { "geoTransforms": [ { "wkid": 108190, "latestWkid": 108190, "transformForward": false, "name": "WGS_1984_(ITRF00)_To_NAD_1983" } ] }, { "geoTransforms": [ { "wkid": 108190, "latestWkid": 108190, "transformForward": true, "name": "WGS_1984_(ITRF00)_To_NAD_1983" } ] }, { "geoTransforms": [ { "wkid": 108190, "latestWkid": 108190, "transformForward": false, "name": "WGS_1984_(ITRF00)_To_NAD_1983" } ] } ], "supportsDatumTransformation": true, "archivingInfo": {"supportsHistoricMoment": false}, "supportsClipping": true, "supportsSpatialFilter": true, "supportsQueryDataElements": true, "maxRecordCount": 2000, "maxImageHeight": 4096, "maxImageWidth": 4096, "supportedExtensions": "" }