{ "currentVersion": 10.91, "serviceDescription": "A wetness index is based on the idea that a terrain profile controls the distribution of water and areas subject to water accumulation. This index was first developed by Beven and Kirkby within their physically based runoff model, TOPMODEL, which is based on the assumption that the hydraulic slope will be equal to the topographic slope, and simulates groundwater and surface-water interactions with topography to identify which areas are susceptible to saturated land surfaces and thus have a high potential to produce surface ponding. ", "mapName": "Layers", "description": "", "copyrightText": "", "supportsDynamicLayers": false, "layers": [ { "id": 0, "name": "Cook_County_TWI", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Raster Layer" }, { "id": 1, "name": "Cook_County_TWI_Filter", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Raster Layer" } ], "tables": [], "spatialReference": { "wkid": 102100, "latestWkid": 3857 }, "singleFusedMapCache": false, "initialExtent": { "xmin": -9785535.438129375, "ymin": 5120981.980442581, "xmax": -9755415.211222248, "ymax": 5135565.842943641, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "fullExtent": { "xmin": -9825552.666174194, "ymin": 5081661.332326457, "xmax": -9742342.099753061, "ymax": 5184122.800449393, "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": "Topographic Wetmess Index", "Author": "Clayton Ballerine", "Comments": "A wetness index is based on the idea that a terrain profile controls the distribution of water and areas subject to water accumulation. This index was first developed by Beven and Kirkby within their physically based runoff model, TOPMODEL, which is based on the assumption that the hydraulic slope will be equal to the topographic slope, and simulates groundwater and surface-water interactions with topography to identify which areas are susceptible to saturated land surfaces and thus have a high potential to produce surface ponding. ", "Subject": "Topographic Wetness Index displaying areas susceptible to saturated land surfaces and has the potential be affected by surface ponding.", "Category": "", "AntialiasingMode": "None", "TextAntialiasingMode": "Force", "Keywords": "TWI" }, "capabilities": "Map,Query,Data", "supportedQueryFormats": "JSON, geoJSON", "exportTilesAllowed": false, "referenceScale": 0, "supportsDatumTransformation": true, "maxRecordCount": 1000, "maxImageHeight": 4096, "maxImageWidth": 4096, "supportedExtensions": "KmlServer" }