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  "description" : "\u003cdiv\u003eThe National Hydrography Dataset Plus (NHDplus) maps the\u003cspan\u003e lakes, ponds, streams, rivers and other surface waters of the United States. Created by the\u003c/span\u003e \u003ca href='https://www.epa.gov/waterdata/basic-information' rel='nofollow ugc' target='_blank'\u003eUS EPA Office of Water\u003c/a\u003e and the \u003ca href='https://www.usgs.gov/core-science-systems/ngp/national-hydrography' rel='nofollow ugc' target='_blank'\u003eUS Geological Survey\u003c/a\u003e, the NHDPlus provides mean annual and monthly flow estimates for rivers and streams. Additional attributes provide connections between features facilitating complicated analyses. \u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003eFor more information on the NHDPlus dataset see the \u003ca href='https://s3.amazonaws.com/nhdplus/NHDPlusV21/Documentation/NHDPlusV2_User_Guide.pdf' rel='nofollow ugc' target='_blank'\u003eNHDPlus v2 User Guide\u003c/a\u003e\u003cspan style='color:rgb(76, 76, 76);'\u003e\u003c/span\u003e.\u003c/div\u003e\u003cdiv\u003e\u003cfont size='4'\u003e\u003cbr /\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv style='text-align:left;'\u003e\u003cfont size='4'\u003eDataset Summary\u003c/font\u003e\u003c/div\u003e\u003cdiv style='text-align:center;'\u003e\u003cbr /\u003e\u003c/div\u003e\u003cspan style='font-size:20px; font-family:sans-serif;'\u003e\u003c/span\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003ePhenomenon Mapped:\u003c/b\u003e Surface waters and related features of the United States and associated territories not including Alaska.\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eCoordinate System: \u003c/b\u003eWeb Mercator Auxiliary Sphere \u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eExtent: \u003c/b\u003eThe\n United States not including Alaska, Puerto Rico, Guam, US Virgin \nIslands, Marshall Islands, Northern Marianas Islands, Palau, Federated \nStates of Micronesia, and American Samoa \u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eVisible Scale: \u003c/b\u003eVisible at all scales but layer draws best at scales larger than 1:1,000,000\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eResolution/Tolerance: \u003c/b\u003e1 meter/2 meters \u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eNumber of Features: \u003c/b\u003e3,035,617 flowlines, 473,936 waterbodies, 16,658 sinks\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eFeature Request Limit: \u003c/b\u003e5,000\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eSource:\u003c/b\u003e \u003c/span\u003e\u003c/font\u003e\u003ca href='https://www.epa.gov/waterdata/basic-information' rel='nofollow ugc' target='_blank'\u003eEPA\u003c/a\u003e and \u003ca href='https://www.usgs.gov/core-science-systems/ngp/national-hydrography' rel='nofollow ugc' target='_blank'\u003eUSGS\u003c/a\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003ePublication Date: \u003c/b\u003eMarch 13, 2019\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cb\u003eArcGIS Server URL: \u003c/b\u003ehttps://services.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/NHDPlusV21/FeatureServer\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cbr /\u003e\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003ePrior to publication, the NHDPlus network and non-network flowline feature classes were combined into a single flowline layer. Similarly, the NHDPlus Area and Waterbody feature classes were merged under a single schema.\u003cbr /\u003e\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cbr /\u003e\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003eAttribute fields were added to the flowline and waterbody layers to simplify symbology and enhance the layer's pop-ups. Fields added include \u003c/span\u003e\u003c/font\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003ePop-up Title, \u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003ePop-up Subtitle, \u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003eOn or Off Network (flowlines only), \u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003eEsri Symbology (waterbodies only), and \u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003e\u003c/span\u003e\u003c/font\u003eFeature Code Description. All other attributes are from the original NHDPlus dataset. No data values -9999 and -9998 were converted to Null values for many of the flowline fields.\u003cbr /\u003e\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont\u003e\u003cspan style='font-size:16px; font-variant-ligatures:none;'\u003e\u003cbr /\u003e\u003c/span\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv style='text-align:left; margin:0px; padding:0px;'\u003e\u003cfont size='4' style=''\u003eWhat can you do with this Feature Layer?\u003c/font\u003e\u003c/div\u003e\u003cdiv style='text-align:left; margin:0px; padding:0px;'\u003e\u003cfont size='4' style=''\u003e\u003cbr /\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv align='left' style='margin:0px; padding:0px; text-align:left;'\u003eFeature\n layers work throughout the ArcGIS system. Generally your work flow with\n feature layers will begin in ArcGIS Online or ArcGIS Pro. Below are \njust a few of the things you can do with a feature service in Online and\n Pro.\u003c/div\u003e\u003cdiv align='left' style='margin:0px; padding:0px; text-align:left;'\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv align='left' style='margin:0px; padding:0px; text-align:left;'\u003e\u003cb\u003eArcGIS Online\u003c/b\u003e\u003c/div\u003e\u003cdiv align='left' style='margin:0px; padding:0px; text-align:center;'\u003e\u003cul\u003e\u003cli\u003e\u003cdiv align='left'\u003eAdd this layer to a map in the map viewer. The layer is limited to scales of approximately 1:1,000,000 or larger but a \u003ca href='https://www.arcgis.com/home/item.html?id=ae4bd17e348c45a4b12448c1890df725' rel='nofollow ugc' target='_blank'\u003evector tile layer\u003c/a\u003e created from the same data can be used at smaller scales to produce a webmap that displays across the full range of scales. The layer or a map containing it can be used in an application.\u003cspan style='text-align:center;'\u003e \u003c/span\u003e\u003c/div\u003e\u003c/li\u003e\u003c/ul\u003e\u003cul\u003e\u003cli\u003e\u003cdiv align='left'\u003e\u003cspan style='text-align:center;'\u003eChange the layer’s transparency and set its visibility range\u003c/span\u003e\u003c/div\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv style='margin:0px; padding:0px; text-align:center;'\u003e\u003cul\u003e\u003cli\u003e\u003cdiv align='left'\u003eOpen\n the layer’s attribute table and make selections. Selections made in the map or table are reflected in the other. Center \non selection allows you to zoom to features selected in the map or table\n and show selected records allows you to view the selected records in \nthe table.\u003c/div\u003e\u003c/li\u003e\u003c/ul\u003e\u003cdiv style='text-align:left;'\u003e\u003cul\u003e\u003cli\u003eApply filters. 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