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UID:pretalx-foss4g-2026-UUF3NZ@talks.osgeo.org
DTSTART;TZID=JST:20260903T130000
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DESCRIPTION:Watershed delineation is essential for flood hazard mapping to 
 minimize disaster impacts. Traditional approaches require time-consuming D
 EM preparation and preprocessing. This presentation introduces a serverles
 s function that extracts watersheds from nationwide flow direction data ho
 sted on cloud storage\, comparing performance between COG and Zarr formats
 .
DTSTAMP:20260604T205901Z
LOCATION:Conference Management Room6
SUMMARY:Serverless Watershed Extraction: Benchmarking Zarr vs COG for Large
 -Scale Flow Direction Data - Shinsuke Nakamori
URL:https://talks.osgeo.org/foss4g-2026/talk/UUF3NZ/
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