Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

Request a free API key from My Account at portal.opentopography.org/requestService?service=api
Read the REST API docs (Swagger) at portal.opentopography.org/apidocs/
Call the Global Datasets API or USGS 3DEP Raster API with demtype, bounding box params (south/north/west/east), output format, and API_Key
For point-cloud rather than raster data, query the Data Catalog API, download the tile-index shapefile, spatially filter tiles for your AOI, then fetch individual LAZ files (or stream via PDAL)

Known gotchas

Free API keys are rate-limited (200 calls/24hr for academic users, 50/24hr for non-academic)
The USGS 1m DEM product is restricted to academic accounts only
Requests are capped by area per resolution tier (e.g., 450,000 km^2 at 30m, 25,000 km^2 at 10m, 250 km^2 at 1m), and the USGS 3DEP raster endpoint depends on USGS backend uptime outside OpenTopography's control

portal.opentopography.org · 5 steps · unrated

Fetch USFS/NLCD Tree Canopy Cover raster values for a service area via the ArcGIS ImageServer REST API

apps.fs.usda.gov · 5 steps · unrated

Access USGS 3DEP lidar point cloud data for a forest inventory area of interest

apps.nationalmap.gov · 4 steps · unrated

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Download a lidar-derived DEM or canopy-height raster from OpenTopography for forest canopy analysis

Steps

Known gotchas

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