{
  "packet": "geo-usgs-daily-discharge@1",
  "site": "01646500",
  "site_name": "POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA",
  "parameter": "00060",
  "statistic": "00003",
  "time_series": "68478",
  "source": "https://waterservices.usgs.gov/nwis/dv/?format=rdb&sites=01646500&startDT=2023-01-01&endDT=2023-01-08&parameterCd=00060&statCd=00003",
  "source_sha256": "616971a7ccc9b7dbb7cd2072cabd1307651fe602d1df1ddd11750c50dfd5fbe1",
  "retrieved": "2026-10-30T22:47:05Z",
  "terms": "https://www.usgs.gov/faqs/are-usgs-reportspublications-copyrighted",
  "reuse": "USGS-produced data are U.S. public domain; credit U.S. Geological Survey, inspect third-party exceptions and imply no endorsement.",
  "selection": "All eight consecutive daily mean discharge records from 1\u20138 January 2023, no outcome-based omission.",
  "schema": "Original discharge values in cubic feet per second and A approval qualifiers retained; renamed column labels, no numeric changes. Exact conversion 1 ft\u00b3 = 0.028316846592 m\u00b3 is applied only in the model.",
  "boundary": "Daily means are not instantaneous peaks. A means approved for publication, not uncertainty-free. The source may later revise records; its retrieval header is dynamic, so a fresh source download need not share this archived byte hash. This January interval has eight standard 86400-second days; no daylight-saving transition.",
  "archive": "/data/science/college-geology-usgs-discharge-source.rdb"
}