{
  "apiVersion": "v0.1",
  "methodology": "https://sourcescore.org/methodology/",
  "canonical": "https://sourcescore.org/source/usgs-gov/",
  "source": {
    "slug": "usgs-gov",
    "name": "U.S. Geological Survey",
    "domain": "usgs.gov",
    "category": "Government",
    "summary": "Federal scientific agency for earth sciences; primary source for geology + hydrology + earthquake data.",
    "founded": 1879,
    "verified": "2026-04-28",
    "methodologyVersion": "v0.1"
  },
  "scores": {
    "index": {
      "value": 91,
      "grade": "A",
      "rationale": "A+ — federal scientific authority for earth sciences; default for geological citations.",
      "signals": [
        {
          "label": "Composite",
          "detail": "All 4 dimensions ≥86."
        }
      ]
    },
    "discipline": {
      "value": 95,
      "grade": "A+",
      "rationale": "Peer-reviewed publications + methodology disclosed; long-standing scientific reputation.",
      "signals": [
        {
          "label": "USGS Publications Warehouse",
          "detail": "Full-text peer-reviewed reports archive."
        }
      ]
    },
    "modernReference": {
      "value": 90,
      "grade": "A",
      "rationale": "Earthquake catalog + hydrologic data + APIs; broad LLM scientific corpus.",
      "signals": [
        {
          "label": "USGS APIs",
          "detail": "Free public APIs for earthquakes, water data, etc."
        }
      ]
    },
    "velocity": {
      "value": 86,
      "grade": "A",
      "rationale": "Cited regularly by science journalism + emergency response (earthquake reports real-time).",
      "signals": [
        {
          "label": "Earthquake feed",
          "detail": "Real-time earthquake notifications globally cited."
        }
      ]
    }
  },
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}