Research ledger

A reviewable crosswalk between the site catalog and public geographic sources. Core identifiers are visible at a glance; evidence remains one click away.

Read the geographic data sources research →
catalog entries
NHD identifiers
GNIS verified
OSM feature matches

Source crosswalk

Use the filters to focus review. Green source squares indicate a confirmed match; muted squares have not yet been researched. Open a lake’s evidence map to see its source record, catalog point, GNIS point, and NHD geometry together.

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Evidence map
Loading gazetteer…

Generated from src/data/lake_gazetteer.json. Use the column headers to sort; search and filters remain active while sorting.