The National Map (TNM) Help Desk

This National Map training video will demonstrate how to use QGIS, a free and open-source GIS software, to import and visualize lidar point cloud data from the USGS 3D Elevation Program (3DEP). 

This National Map training video will demonstrate how to create and implement a Point Data Abstraction Library or PDAL pipeline script that will generate derivative elevation rasters from USGS 3D Elevation Program (3DEP) lidar point cloud source data from the USGS E

This National Map training video demonstrates how to use the 3D Elevation Program’s Dynamic Elevation Service in ArcGIS Pro and ArcGIS Online (AGOL). By the end of this lesson, you will be able to add the Dynamic Elevation Web service to ArcGIS Pro, enable raster processing templates, and retrieve a spot elevation.

This National Map training video is a brief introduction to using the topoBuilder application to build customized USGS topographic maps centered anywhere in the United States and territories that use the best available data of The National Map. Learn more at USGS.gov/topoBuilder.

This National Map training video is a brief introduction to using the topoBuilder application to build customized USGS topographic maps centered anywhere in the United States and territories that use the best available data of The National Map. Learn more at USGS.gov/topoBuilder.

This National Map training video is an introduction to using the LidarExplorer application to easily access lidar data and derived products. In LidarExplorer, you can search for lidar projects, digital elevation models, and lidar point cloud files to meet your needs.

This lesson will show how to use the Domestic Names Search Application to find names of geographic features. By the end of this lesson, you will be introduced to the Geographic Names Information System, understand the search application for U.S. domestic geographic names, and see some search options and help features.

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In this lesson, we will provide an overview and demonstrate how to use The National Map’s web services in a mapping application.   Although downloading data from The National Map is a popular option for many users, there are numerous situations where it may be preferable to simply call TNM web services into your mapping application.

In this lesson we will provide a brief introduction on how to use The National Map Download Application to download USGS maps and data. The TNM Download Application allows users to explore and access the USGS staged products available for download.

This lesson will show how to run GRASS GIS and utilize GRASS’s unique user interface to import and visualize elevation data.

In this lesson, we will discuss each of the eight base layers of The National Map (TNM). Understanding the content of each layer, where the data comes from, and how this information is managed, is an important step in better utilizing The National Map and its products and services.

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The US Interagency Elevation Inventory, or USIEI, is a nationwide listing of known publicly available high-accuracy topographic and bathymetric source elevation data for the United States and its territories. The inventory provides a single resource for information about all known completed and in-progress broad-area public domain elevation data.

In this lesson we will provide a brief introduction on how to use The National Map Download Application. The TNM Download application allows users to explore and access the USGS staged products available for download. This application is a user-friendly version of the USGS staged-product application programming interface, and it is available on most platforms.

Lesson 11c: Creating a KML file and Shapefile - In this lesson, you will learn how to create a KML file for your area of interest in Google Earth, and how to create a shapefile using the U.S. Mapping Coordination Site Interagency Elevation and Bathymetry Coordination site.

In this lesson, we will provide an overview and demonstrate how to use The National Map’s web services in a mapping application. Although downloading data from The National Map is a popular option for many users, there are numerous situations where it may be preferable to simply call TNM web services into your mapping application.

This lesson will cover Stream Flow Estimates in NHDPlus High Resolution. Enhanced Runoff Method, or EROM is the method used to compute estimates of the mean annual flow for the NHDPlus flowline features in the NHDPlus HR network.

 

This lesson will cover additional lidar point cloud processing and analysis features in ArcGIS Pro. If necessary, please review lesson 10b1 for guidance with importing LAS files, filtering, and visualizing lidar point cloud data in ArcGIS Pro.

This video tutorial shows how to use the National Map’s 3D Elevation Program (3DEP) Elevation web service in ArcMap. By the end of this lesson, you will be able to add the Dynamic Elevation Web Coverage Service to ArcMap, enable raster processing templates, and retrieve a spot elevation.

In this lesson, you will learn about the lidar products available through the 3D Elevation Program (which is abbreviated as “3DEP”). The lesson will introduce 3DEP, discuss the lidar data available, and where to find the data.

In this lesson we will examine a brief history of the USGS topographic map, Introduce US Topo maps and their content, discuss the production and future goals of US Topo, and learn how to access these maps for viewing or printing.

 

By the end of this lesson, you will understand the difference between the LAS and LAZ format, know where to download the laszip.exe tool, and how to decompress a LAZ file to a LAS file using laszip.exe. The USGS offers other lessons on using LAS files in ArcGIS Pro, Global Mapper, and LP360.