Lesson 11d: Using SeaSketch to View 3DEP Lidar Areas of Interest

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In this lesson you will learn how to zoom to your area of interest and view the footprints of existing and proposed topographic lidar projects. The Integrated Working Group on Ocean and Coastal Mapping and the 3D Elevation Program or 3DEP are demonstrating how we can work together to coordinate on mapping requirements and plans of Federal and state agencies around the country.
 

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Length: 00:04:42

Location Taken: US

Transcript

In this lesson you will learn how to zoom to your area of interest and view the footprints of existing and proposed topographic lidar projects.

The Integrated Working Group on Ocean and Coastal Mapping and the 3D Elevation Program or 3DEP are demonstrating how we can work together to coordinate on mapping requirements and plans of Federal and state agencies around the country.

Our goal is to help federal agencies and our partners collaborate on mapping data requirements and acquisition, for more opportunities to "MAP ONCE, USE MANY TIMES."  We hope to enable coordinated planning between agencies and with our partners in order to meet more than one mapping need with the same data.  And we hope to convey where mapping is planned to happen so that we eliminate redundant efforts and acquire more data that everyone can use.

 

This video was developed to facilitate the collection of requirements for 3DEP so the discussion is focused on topographic lidar.  The uses of the application are much broader.
 

SeaSketch contains information on 9 categories of data. For 3DEP, we are focused on Mapping Priorities: Proposed, Planned and Ongoing Mapping Projects and Existing Data.  For 3DEP, the existing data you will be interested in is Existing 3DEP Quality Data under the “Topographic Lidar” subcategory for 3DEP. This layer shows where there’s planned, in-progress, and existing lidar that meet 3DEP specifications.

Planned and Ongoing Mapping Projects" are funded and are in progress or about to start.

The Mapping Priorities: Proposed" are simply agency areas of interest.  The projects are not currently funded.   However, It is among these projects where we hope to forge partnerships among federal, state and local agencies where projects overlap or are adjacent.

The footprints for the data available in each category are displayed in the map window.  You can expand the subcategories and the check boxes to turn them on or off for display and query purposes.  For example you can view current federal 3DEP interests and the interests of state and local government.

Before we go any farther let’s talk about the map tools.  Several basemap alternatives are available.  You can choose imagery or perhaps you are interested in using the topographic option or any of the other basemap options shown here.   

Click on the “My Plans” tab to create a shapefile for your area of interest.  You must be logged in to access this tab.  The process for creating a shapefile using this tab is described in lesson 11c.  You will only use My Plans if you need to create a shapefile for the 3DEP BAA – Public Areas of Interest Project Collector Tool described in lesson 11b.

The interface includes a variety of means for zooming to your area of interest:

The standard + and – buttons are on the upper left of the map. 

Click on the tool icon to reset the map extent or to add map features and tools to the map.  You can turn the side bar off to expand the map.  You can also search for and zoom to a location.

The mouse wheel can be used to zoom in and out. Pressing and holding the left mouse button allows you to pan across the map. 

And finally, you can press and hold the Shift key, and then drag a box on the map.

Let’s see if lidar data exists for your area of interest.

You can click on the map within an existing project to learn more about the project including quality level and point spacing. 

If you had submitted a project in this region it will appear on the map and will be listed under 3DEP Mapping Areas of Interest. You can use the SeaSketch tools to explore other agencies’ Mapping Priorities: Proposed and Planned and Ongoing Mapping Projects as well as Existing Data.  The information will be used to develop funding partnerships by identifying areas of overlapping interest.  

This concludes lesson 11d