Query the USFS FIADB-API/EVALIDator endpoint for a forest inventory estimate (e.g., volume or area)

domain: apps.fs.usda.gov/fiadb-api · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

  1. Read the (marked 'under construction') docs at https://apps.fs.usda.gov/fiadb-api/
  2. Call the /fullreport endpoint with required params: wc (EVALID inventory code), snum (estimate attribute number), rselected/cselected (row/column groupings)
  3. Set outputFormat=NJSON (not the default HTML cross-tab) to get a flat, parseable JSON response
  4. Discover valid parameter values via /fullreport/parameters/<paramname> before building the query
  5. Example: GET https://apps.fs.usda.gov/fiadb-api/fullreport?rselected=Land%20Use%20-%20Major&cselected=Land%20use&snum=79&wc=102020&outputFormat=NJSON
  6. Parse the returned JSON's estimates/subtotals/totals/metadata fields (metadata includes the generated SQL for verification)

Known gotchas

Related routes

Generate forest inventory population estimates (e.g., tree volume, land use, species composition by state or circular area) via the USFS FIADB-API /fullreport endpoint
apps.fs.usda.gov · 5 steps · unrated
Query the USDA Forest Service Urban FIADB-API for a city's tree-canopy area estimates
apps.fs.usda.gov · 5 steps · unrated
Download bulk FIA forest inventory data (CSV/SQLite) from the USFS FIA DataMart
apps.fs.usda.gov · 5 steps · unrated

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