data api · United States

Wildfire Boundary Polygons from USGS and CalFire in cloud native formats

Cloud Native serializations of publicly available fire data from USGS and Calfire. Calfire data includes controlled burn treatments. Data through 2022

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What's in it

Data offered docs-verified: Wildfire and fuel-treatment boundary polygons (cloud-native serializations of USGS and CalFire data) · Fuel-treatment status (Completed, Planned, Started, Other) · Fuel-treatment category (Mechanical, Planned Ignition, Unplanned Ignition, Chemical, Biological) · Treated acres, per-treatment cost fields (total_cost, cost_per_uom) and H3 hex index (h8, h10)
Coverage docs-verified: United States: 50 states, Puerto Rico and Guam · Data through 2022 (per page description)
Resolution docs-verified: Polygon treatments; H3 hex index at resolution 10 for most records, 9 and 8 for the largest polygons
Formats docs-verified: GeoParquet · PMTiles · Parquet (H3 hex)
Access docs-verified: Public; no authentication; read over HTTPS/S3 (e.g. DuckDB read_parquet); TWIG treatment data licensed CC-BY-4.0

Useful for

Use cases llm-inferred: Report completed fuel-treatment acreage by category for a wildfire risk or fire-management baseline, with the status filter stated · Measure repeat versus unique treated ground by counting distinct H3 h8 cells alongside summed acres · Join treatment polygons to other H3 h8 datasets for spatial analysis of treated land
Audience llm-inferred: GIS analysts · wildfire and fire-management analysts · ecologists · environmental consultants · planners

Limitations

Constraints docs-verified: Page description says data through 2022, but the TWIG README gives a treatment-date window to 2026-09-17; the time span is inconsistent · The README describes fuel treatments, not the USGS/CalFire wildfire perimeters named in the description · Summing acres double-counts repeat treatments on the same ground · Unfiltered totals include Planned and Started work and overstate completed work by roughly 42% · treatment_date has implausible values (1202 to 2926); an explicit date window is required · Joins must use h8, since h10 drops the 78 largest treatments · SHAPE__Area and SHAPE__Length are in square degrees and degrees, not metres · uom is not always acres (33 miles, 32 per-each, 145,076 unitless) · BUFFERED_LINE and BUFFERED_POINT acres are not measured footprints · One record has no geometry and one is mislocated into the Atlantic · 737,013 records overlap FACTS Common Attributes and must not be unioned with it

Licence: see product README
Authentication: Public; anonymous HTTPS/S3 access via data.source.coop
GitHub stars: Unknown
Last commit: Unknown
Last successful page check: 14/10/2026
Page health: page reachable
Package: Not recorded
Verification: Not independently verified

Provenance & evidence

Verified via Source Cooperative API /api/v1/products/cboettig (public product, updated 2025-08-21).

Metadata observed 14/10/2026 · research sweep: manual-2026-10-15 (source.coop)