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Layer: National Hydrography Dataset Plus Version 2.1 Monthly Flow and Velocity (ID:11)

View In:   Map Viewer

Name: National Hydrography Dataset Plus Version 2.1 Monthly Flow and Velocity

Display Field: GNIS_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: <div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;">The National Hydrography Dataset Plus (NHDplus) maps the<span style="font-family:inherit;"> lakes, ponds, streams, rivers and other surface waters of the United States. Created by the</span> <a href="https://www.epa.gov/waterdata/basic-information" style="color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;" target="_blank">US EPA Office of Water</a> and the <a href="https://www.usgs.gov/core-science-systems/ngp/national-hydrography" style="color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;" target="_blank">US Geological Survey</a>, the NHDPlus provides mean annual and monthly flow estimates for rivers and streams. Additional attributes provide connections between features facilitating complicated analyses.<br /></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><br /></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;">For more information on the NHDPlus dataset see the <a href="https://www.horizon-systems.com/NHDPlus/NHDPlusV2_documentation.php#NHDPlusV2%20User%20Guide" style="color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;" target="_blank">NHDPlus v2 User Guide</a>.</div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font size="4" style="font-family:inherit;"><br /></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font size="4" style="font-family:inherit;">Dataset Summary</font></div><span style="font-family:sans-serif; font-size:20px;"></span><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Phenomenon Mapped:</b> Surface waters and related features of the United States and associated territories not including Alaska.</span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Coordinate System: </b>Web Mercator Auxiliary Sphere </span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Extent: </b>The United States not including Alaska, Puerto Rico, Guam, US Virgin Islands, Marshall Islands, Northern Marianas Islands, Palau, Federated States of Micronesia, and American Samoa </span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Visible Scale: </b>Visible at all scales but layer draws best at scales larger than 1:1,000,000</span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Resolution/Tolerance: </b>1 meter/2 meters </span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Number of Features: </b>3,035,617 flowlines, 473,936 waterbodies, 16,658 sinks</span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Feature Request Limit: </b>5,000</span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Source:</b> </span></font><a href="https://www.epa.gov/waterdata/basic-information" style="color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;" target="_blank">EPA</a> and <a href="https://www.usgs.gov/core-science-systems/ngp/national-hydrography" style="color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;" target="_blank">USGS</a></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><b>Publication Date: </b>March 13, 2019</span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><br /></span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;">Prior 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.<br /></span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><br /></span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;">Attribute fields were added to the flowline and waterbody layers to simplify symbology and enhance the layer's pop-ups. Fields added include </span></font><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;">Pop-up Title, </span></font><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;">Pop-up Subtitle, </span></font><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;">On or Off Network (flowlines only), </span></font><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><font style="font-family:inherit;"><span style="font-family:inherit;"><font style="font-family:inherit;"><span style="font-family:inherit;"><font style="font-family:inherit;"><span style="font-family:inherit;"><font style="font-family:inherit;"><span style="font-family:inherit;">Esri Symbology (waterbodies only), and </span></font></span></font></span></font></span></font>Feature 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.<br /></span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;"><font style="font-family:inherit;"><span style="font-family:inherit; font-variant-ligatures:none;"><br /></span></font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;"><font size="4" style="font-family:inherit;">What can you do with this Feature Layer?</font></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;"><font size="4" style="font-family:inherit;"><br /></font></div><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;">Feature layers work throughout the ArcGIS system. Generally your work flow with feature layers will begin in ArcGIS Online or ArcGIS Pro. Below are just a few of the things you can do with a feature service in Online and Pro.</div><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;"><br /></div><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;"><b>ArcGIS Online</b></div><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px; text-align:center;"><ul><li><div align="left" style="font-family:inherit;">Add 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 <a href="https://www.arcgis.com/home/item.html?id=ae4bd17e348c45a4b12448c1890df725" style="color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;" target="_blank">vector tile layer</a> 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.<span style="font-family:inherit; text-align:center;"> </span></div></li></ul><ul><li><div align="left" style="font-family:inherit;"><span style="font-family:inherit; text-align:center;">Change the layer’s transparency and set its visibility range</span></div></li></ul></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px; text-align:center;"><ul><li><div align="left" style="font-family:inherit;">Open the layer’s attribute table and make selections. Selections made in the map or table are reflected in the other. Center on selection allows you to zoom to features selected in the map or table and show selected records allows you to view the selected records in the table.</div></li></ul><div style="font-family:inherit; text-align:left;"><ul><li>Apply filters. For example you can set a filter to show larger streams and rivers using the mean annual flow attribute or the stream order attribute.</li></ul></div></div><div style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px; text-align:center;"><ul><li><div align="left" style="font-family:inherit;">Change the layer’s style and symbology<span style="font-family:inherit; background-color:rgb(255, 255, 0);"><br /></span></div></li></ul></div><ul><li><div align="left" style="font-family:inherit;">Add labels and set their properties</div></li></ul><ul><li><div align="left" style="font-family:inherit;">Customize the pop-up</div></li></ul><ul><li>Use as an input to the ArcGIS Online analysis tools. This layer works well as a reference layer with the trace downstream and watershed tools. The buffer tool can be used to draw protective boundaries around streams and the extract data tool can be used to create copies of portions of the data.<br /></li></ul><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;"><b>ArcGIS Pro</b></div><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;"><ul><li>Add this layer to a 2d or 3d map.<br /></li></ul></div><ul><li><div align="left" style="font-family:inherit;">Use as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class.<br /></div></li></ul><ul><li><div align="left" style="font-family:inherit;">Change the symbology and the attribute field used to symbolize the data</div></li></ul><ul><li><div align="left" style="font-family:inherit;">Open table and make interactive selections with the map</div></li></ul><ul><li><div align="left" style="font-family:inherit;">Modify the pop-ups</div></li></ul><ul><li><div align="left" style="font-family:inherit;">Apply Definition Queries to create sub-sets of the layer</div></li></ul><div align="left" style="font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px; margin:0px; padding:0px;">This layer is part of the <a href="https://livingatlas.arcgis.com/" style="color:rgb(0, 94, 149); font-family:inherit;" target="_blank">ArcGIS Living Atlas of the World</a> that provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.</div>

Copyright Text:

Min. Scale: 500000

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Global ID Field: GlobalID

Type ID Field: Symbology

Fields:
Types:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 6/10/2025 4:49:35 PM

Schema Last Edit Date: 6/3/2025 5:51:03 PM

Data Last Edit Date: 6/10/2025 4:49:35 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Update Features   Apply Edits   Calculate   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat