- Zoom to your area of interest;
- Easiest to just download the entire screen.
- Select available data products. The most useful will be:
- Elevation Products (3DEP): this is 3DEP/NED in 1", 1/3" available nationwide; and 1/9", and the 1 m DEM available in some locations. Different spacing in Alaska.
- Elevation Source Data (3DEP): LAS files. These are large
- Names--Geographic Names Information System (GNIS, or gazetteer)
- US Topo
- Historical Topographic Maps
- Generally less useful
- Hydrography NHD: you probably want the shapefiles for Dynamic Extract and Dynamic extract with flow table.
- Select format. If possible you want Geotiff or Shapefile as the best formats for use in MICRODEM. In particular avoid the Geodatabase, which is a proprietary ESRI format for Arc. Some other formats will require that that you have GDAL
Elevation Products (3DEP): For the elevation data there are several formats, all of which work with varying challenges. All will be zipped initially.
- Geotiff
- IMG select the IMG file and GDAL converts to a Geotiff which will open.
Elevation Source Data (3DEP): LAS files.
- Pick lidar point cloud under data, and select the region
- Download options
- Imagery--1 foot (HRO) .This imagery may have the choice of multiple dates, some of which will include 4 bands with IR for vegetation analysis.
- Imagery--1 meter (NAIP). Newer NAIP might have higher spatial resolution.
Zoom map to show your area.
Pick the option for "Current extent" on the top of the mpa.
Find products.
Download options
Options here have been changing significantly
Should be able to
- Download each tile individually. Download link LAZ in blue on the right lets you choose the directory to download a single file. Easiest choice if you want just a few file.
- Batch download
- From the results of the search or the cart, export URLs to text (TXT icon)
- Use Batch Download on Data Manipulation form if you get the TEXT file.
- You must pick the data you want and add to your cart (you use +All instead of checking each individually). Then view cart. You can download all files together.
Recently (but not now) the uget option was the only one that worked; it is available from your cart where the individual download option is not present. Use uGet only if you need a lot of files.