{ "currentVersion": 10.61, "serviceDescription": "Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National representation of HU boundaries from 2 to 14 digits compiled from U.S. Geological Survey (USGS) National Hydrography Dataset (NHD) and U.S. Department of Agriculture (USDA) National Resources Conservation Service (NRCS) Watershed Boundary Dataset (WBD) sources. Purpose: This data is intended primarily for geographic display and analysis of regional and national data, and can also be used for illustration purposes at intermediate or small scales (1:250,000 to 1:2,000,000). ", "mapName": "Layers", "description": "\n\n", "copyrightText": "USGS TNM \u2013 National Hydrography Dataset. Data Refreshed January, 2019.", "supportsDynamicLayers": true, "layers": [ { "id": 0, "name": "WBDLine", "parentLayerId": -1, "defaultVisibility": false, "subLayerIds": null, "minScale": 0, "maxScale": 0 }, { "id": 1, "name": "2-digit HU (Region)", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 110000000, "maxScale": 0 }, { "id": 2, "name": "4-digit HU (Subregion)", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 13866974, "maxScale": 8000000 }, { "id": 3, "name": "6-digit HU (Basin)", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 8000000, "maxScale": 2000000 }, { "id": 4, "name": "8-digit HU (Subbasin)", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 2000000, "maxScale": 866686 }, { "id": 5, "name": "10-digit HU (Watershed)", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 866687, "maxScale": 433343.00001 }, { "id": 6, "name": "12-digit HU (Subwatershed)", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 433346, "maxScale": 0 }, { "id": 7, "name": "14-digit HU", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 216672.00001, "maxScale": 0 } ], "tables": [], "spatialReference": { "wkid": 102100, "latestWkid": 3857 }, "singleFusedMapCache": false, "initialExtent": { "xmin": -1.1898512349355021E7, "ymin": 3952104.071668233, "xmax": -1.1693714858336186E7, "ymax": 4028083.940836221, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "fullExtent": { "xmin": -1.9951755682E7, "ymin": -1622986.231800001, "xmax": 2.0021553447300002E7, "ymax": 1.1554273714500003E7, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "minScale": 0, "maxScale": 0, "units": "esriMeters", "supportedImageFormatTypes": "PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP", "documentInfo": { "Title": "USGS TNM Hydrography (WBD)", "Author": "U. S. Geological Survey - National Geospatial Program", "Comments": "See https://viewer.nationalmap.gov/help for assistance with The National Map viewer, download client, services, or metadata.", "Subject": "inlandWaters", "Category": "", "AntialiasingMode": "Fast", "TextAntialiasingMode": "Force", "Keywords": "a-16,ngda,water \u2013 inland,hydrography,NHD,water,drainage,river,stream,canal,ditch,lake,pond,reservoir,swamp,marsh,spring,well,dam,gage,WBD,HU,hydrologic unit,region,subregion,basin,subbasin,watershed,subwatershed,REST,WMS" }, "capabilities": "Map,Query,Data", "supportedQueryFormats": "JSON, AMF, geoJSON", "exportTilesAllowed": false, "datumTransformations": [ { "geoTransforms": [ { "wkid": 108001, "latestWkid": 1241, "transformForward": true, "name": "NAD_1927_To_NAD_1983_NADCON" } ] }, { "geoTransforms": [ { "wkid": 108001, "latestWkid": 1241, "transformForward": false, "name": "NAD_1927_To_NAD_1983_NADCON" } ] } ], "supportsDatumTransformation": true, "maxRecordCount": 1000, "maxImageHeight": 4096, "maxImageWidth": 4096, "supportedExtensions": "WMSServer" }