Beaver Island ArchiveA primary-source archive & encyclopedia45°40′N 85°33′W · Lake Michigan
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Dataset

NOAA NCEI Lake Michigan integrated bathymetry dataset

Also Lake Michigan bathymetric contours · Michigan LLD grid · DOI 10.7289/V5B85627

Draft — sources verified, prose evolving

TypeDataset
WithinBeaver Island archipelago
ErasModern era
On this page
Dataset
Eras
Modern era
Concepts
geologymaritimeenvironment
Within
Beaver Island archipelago

Summary

This held NOAA National Centers for Environmental Information collection contains lakewide Lake Michigan bathymetric contours and an integrated bathymetric-topographic GeoTIFF grid. It provides broad physical context for the Beaver Island archipelago and can be used alongside the more localized 2001 USGS/USACE reef and coastal surveys.

Evidence and limits

The held archives and provenance establish the products, their formats, DOI, public-domain attribution, retrieval dates, and checksums. The contour archive contains a shapefile; the grid archive contains a GeoTIFF, projection file, and world file. Neither archive has yet been converted here into a reef boundary, place coordinate, shoreline history, navigational route, ownership map, or current depth claim.

This is bathymetric reference data, not an operational nautical chart. Any feature-specific assertion needs a reproducible extraction with the dataset’s own metadata, resolution, vertical datum, and date checked for that use.

See also

Sources

  1. Held ZIP contains a Lake Michigan contour shapefile and associated projection/metadata sidecars. Preserved provenance records retrieval on 31 July 2026, SHA-256 c8c7ad737e3f702abeba84017f6ef590d5b4ffabfcd1215af8ce1b548473eeac, and NOAA public-domain status.
    federal · noaa_bathymetry · ncei_lake_michigan · Lake_Michigan_Contours
  2. Held tarball contains a GeoTIFF grid with projection and world-file sidecars. Preserved provenance records retrieval on 31 July 2026, SHA-256 7e42ece50a4a8614b630745aefaa46dfb759b4077ad754e3d790960094494ad8, and NOAA public-domain status.
    federal · noaa_bathymetry · ncei_lake_michigan · michigan_lld.geotiff.tar
  3. The adjacent grid provenance sidecar records the second artifact. Both sidecars preserve source URLs, checksums, retrieval timestamps, DOI, product labels, and public-domain attribution.
    federal · noaa_bathymetry · ncei_lake_michigan · Lake_Michigan_Contours.provenance

Added 2 August 2026. Recent changes

Cite this article

Beaver Island Archive, “NOAA NCEI Lake Michigan integrated bathymetry dataset”, https://beaverislandarchive.org/documents/ncei-lake-michigan-integrated-bathymetry/, accessed [date], citing NOAA National Centers for Environmental Information, Lake Michigan bathymetric contours, DOI 10.7289/V5B85627. (and 2 further sources listed on the page).

Last revised 2026-08-02. Fill in [date] with the date you read it — this page is static and cannot know that.

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