Wetlands are areas where water is present at or near the surface of the soil during at least part of the year. Wetlands provide habitat for many species of plants and animals that are adapted to living in wet habitats. Wetlands form characteristic soils, absorb pollutants and excess nutrients from aquatic systems, help buffer the effects of high flows, and recharge groundwater. Data on the distribution and type of wetland play an important role in land use planning and several federal and state laws require that wetlands be considered during the planning process.The National Wetlands Inventory (NWI) was designed to assist land managers in wetland conservation efforts. The NWI is managed by the US Fish and Wildlife Service.Dataset SummaryPhenomenon Mapped: WetlandsGeographic Extent: 50 United States plus Puerto Rico, the US Virgin Islands, Guam, American Samoa, and the Northern Mariana IslandsProjection: Web Mercator Auxiliary SphereVisible Scale: This layer preforms well between scales of 1:1,000,000 to 1:1,000. An imagery layer created from this dataset is also available which you can also use to quickly draw wetlands at smaller scales.Source: U.S. Fish and Wildlife ServiceUpdate Frequency: AnnualPublication Date: October 26, 2024This layer was created from the October 26, 2024 version of the NWI. The features were converted from multi-part to a single part using the Multipart To Singlepart tool. Features with more than 50,000 vertices were split with the Dice tool. The Repair Geometry tool was run on the features, using the OGC option.The layer is published with a related table that contains text fields created by Esri for use in the layer's pop-up. Fields in the table are:Popup Header - this field contains a text string that is used to create the header in the default pop-up System Text - this field contains a text string that is used to create the system description text in the default pop-upClass Text - this field contains a text string that is used to create the class description text in the default pop-upModifier Text - this field contains a text string that is used to create the modifier description text in the default pop-upSpecies Text - this field contains a text string that is used to create the species description text in the default pop-upCodes, names, and text fields were derived from the publication Classification of Wetlands and Deepwater Habitats of the United States.What can you do with this layer?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.ArcGIS OnlineAdd this layer to a map in the map viewer. The layer is limited to scales of approximately 1:1,000,000 or larger but an imagery layer created from the same data can be used at smaller scales to produce a webmap that displays across the full scale range. The layer or a map containing it can be used in an application.Change the layer’s transparency and set its visibility rangeOpen the layer’s attribute table and make selections and apply filters. 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.Change the layer’s style and filter the data. For example, you could set a filter for System Name = 'Palustrine' to create a map of palustrine wetlands only.Add labels and set their propertiesCustomize the pop-upArcGIS ProAdd this layer to a 2d or 3d mapUse as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class. Change the symbology and the attribute field used to symbolize the dataOpen table and make interactive selections with the mapModify the pop-upsApply Definition Queries to create sub-sets of the layerThis layer is part of the Living Atlas of the World that provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.Questions?Please leave a comment below if you have a question about this layer, and we will get back to you as soon as possible.

Wetlands are areas where water is present at or near the surface of the soil during at least part of the year. Wetlands provide habitat for many species of plants and animals that are adapted to living in wet habitats. Wetlands form characteristic soils, absorb pollutants and excess nutrients from aquatic systems, help buffer the effects of high flows, and recharge groundwater. Data on the distribution and type of wetland play an important role in land use planning and several federal and state laws require that wetlands be considered during the planning process.The National Wetlands Inventory (NWI) was designed to assist land managers in wetland conservation efforts. The NWI is managed by the US Fish and Wildlife Service.Dataset SummaryPhenomenon Mapped: WetlandsGeographic Extent: 50 United States plus Puerto Rico, the US Virgin Islands, Guam, American Samoa, and the Northern Mariana IslandsProjection: Web Mercator Auxiliary SphereVisible Scale: This layer preforms well between scales of 1:1,000,000 to 1:1,000. An imagery layer created from this dataset is also available which you can also use to quickly draw wetlands at smaller scales.Source: U.S. Fish and Wildlife ServiceUpdate Frequency: AnnualPublication Date: October 26, 2024This layer was created from the October 26, 2024 version of the NWI. The features were converted from multi-part to a single part using the Multipart To Singlepart tool. Features with more than 50,000 vertices were split with the Dice tool. The Repair Geometry tool was run on the features, using the OGC option.The layer is published with a related table that contains text fields created by Esri for use in the layer's pop-up. Fields in the table are:Popup Header - this field contains a text string that is used to create the header in the default pop-up System Text - this field contains a text string that is used to create the system description text in the default pop-upClass Text - this field contains a text string that is used to create the class description text in the default pop-upModifier Text - this field contains a text string that is used to create the modifier description text in the default pop-upSpecies Text - this field contains a text string that is used to create the species description text in the default pop-upCodes, names, and text fields were derived from the publication Classification of Wetlands and Deepwater Habitats of the United States.What can you do with this layer?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.ArcGIS OnlineAdd this layer to a map in the map viewer. The layer is limited to scales of approximately 1:1,000,000 or larger but an imagery layer created from the same data can be used at smaller scales to produce a webmap that displays across the full scale range. The layer or a map containing it can be used in an application.Change the layer’s transparency and set its visibility rangeOpen the layer’s attribute table and make selections and apply filters. 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.Change the layer’s style and filter the data. For example, you could set a filter for System Name = 'Palustrine' to create a map of palustrine wetlands only.Add labels and set their propertiesCustomize the pop-upArcGIS ProAdd this layer to a 2d or 3d mapUse as an input to geoprocessing. For example, copy features allows you to select then export portions of the data to a new feature class. Change the symbology and the attribute field used to symbolize the dataOpen table and make interactive selections with the mapModify the pop-upsApply Definition Queries to create sub-sets of the layerThis layer is part of the Living Atlas of the World that provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.Questions?Please leave a comment below if you have a question about this layer, and we will get back to you as soon as possible.

This Esri supported add-in is used to:1. Split multi-segment lines at inflection points; for example, at locations where one curve transitions into another, or at sharp bends or corners between two straight-line segments.2. Convert densified lines into one or more separate circular arcs by fitting circular arcs to the straight-line segment sequences.3. Simplify lines by testing segment tangency and removing unneeded vertices along a straight line or along a circular arc.4. Select multi-segment lines based on the properties of the segments.5. Select features that have multi-part geometries.For a full description of how to use this tool, please read the Add-in documentation:Curves And Lines Add-inAlso see the Help video available from the toolbar, or directly from here.Archived older versions of this add-in available from here.Installing a different version of an add-in.If you are installing the add-in directly on your client machine, as opposed to placing the add-in file at a network share location, then follow these steps:First un-install the version currently on the client machine. 1. In ArcMap go to Customize -> Add-in Manager2. On the Add-ins tab click to select the add-in you want to un-install, and then click the Delete button.3. Click Yes on the dialog that asks for confirmation on the delete.4. Click Close.5. Close ArcMap.6. Start ArcMap and use Add-in Manager to confirm the add-in is not listed under the My Add-ins section of the left pane.7. Close ArcMap.8. Double-click the add-in file for the version of the add-in that you want to install.9. Click the Install Add-in button.10. Start ArcMap and use Add-in Manager to confirm that the desired version of the add-in is now listed under My Add-ins.Troubleshooting Notes: A. if problems are encountered when attempting to run the add-in, check to make sure you have privileges on the well-known folder. You should be able to browse to the file add-in location on disk, in the well-known folder: C:\Users<username>\Documents\ArcGIS\AddIns\Desktop10.<0-1>\B. Alternatively, consider using a network share for your add-in, and follow the steps below.C. Make sure that the add-in is being loaded from ONLY ONE location, by confirming that you do not have the add-in file on both a network share as well as on your well-known folder location. This can cause conflicts and may result in the add-in not loading.If you use a network share to load the add-in, then follow these steps:1. In ArcMap go to Customize -> Add-in Manager.2. In the left pane on the Add-ins tab, scroll down to the Shared Add-ins.3. Under Shared Add-ins, click on the add-in name that you want to change and confirm the add-in version in the right pane is the one you want to change from.4. Click the Options tab on the Add-in Manager and get the share location for the add-in you want to change from.4. Click Close on the Add-in Manager and close ArcMap.5. Using the required privileges, browse to the share location and replace the add-in file with the version of the add-in file that you want to change to.6. Start ArcMap and use Add-in Manager to confirm that the desired version of the add-in is now listed under Shared Add-ins.General notes and resources:A. See the Administrator Settings heading under the help section here: https://bit.ly/2XD5mb8NOTE:ArcGIS Pro 2.1 introduced a geoprocessing tool that will convert densified lines into one or more circular arc segments by fitting circular arcs to the straight-line segment sequences. This new gp tool can be found in the Editing toolbox and is called Simplify By Straight Lines And Circular Arcs.