USGS Washington Water Science Center
Pacific Crest Trail Water-Source Observations, 2012–2024
Where hikers reported water—and where the map stays uncertain
USGS organised volunteer reports of flowing or dry water sources from the Pacific Crest Trail Water Report as FLOwPER spatial records. The publisher warns that extra checks on location accuracy and stream-network matching were not performed. These historic observations are not current drinking-water advice.
“Which stretches have the most variable water reports, and where are the gaps in observation?”
Fixed research release · published 2026-10-07
Pacific Crest Trail in California, Oregon, and Washington · May 2012–September 2024 observations
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USGS portions CC0 1.0; PCT-contributed portions CC BY 4.0
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Mixed rights: USGS portions CC0 1.0; PCT Water Report-derived observations CC BY 4.0
Cite Jaeger, Gaslin, Fergus and Johnson (2026), the full title and USGS data-release DOI 10.5066/P14FWDY6; acknowledge Pacific Crest Trail Water Report contributions, link CC BY 4.0, and identify changes. Keep the third-party credit when reusing the combined release.
Before publication, recheck the ScienceBase files and rights note; distinguish volunteer reports from USGS processing and inspect observation dates, wet/dry classes, and positional accuracy. Historic, not additionally spatially quality-checked records must not be used as present-day water availability or drinking-safety advice.