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USGS Water Data APIs boundary

Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for USGS Water Data APIs.

version 1.0.0freshness currentobserved 2026-08-27T09:30:00Z

resource.public-data.usgs-water-data-apis
sha256:e97e39e890142ef907e4aee7ad57450b095af152ebc91946a8a9b61f6401f5ce

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Evidence-backed facts

  1. USGS documents OGC, STAC, water-quality, imagery, and related APIs for sensor measurements, daily values, files, samples, and monitoring-location metadata. informative
  2. Some read access is public, while an API key can provide higher rate limits; authentication and availability must be checked for the selected endpoint family. informative
  3. Clients must choose the correct API family and bind monitoring location, parameter, time, format, paging, and provisional-data semantics rather than mix legacy contracts. informative
  4. Water measurements and derived values can be provisional, revised, discontinuous, or site-specific and do not alone prove water safety, absence, or regulatory compliance. informative