swamp · official layer
Salt Marsh
A swamp entered on the federal register of geographic names as feature 606456 in Middlesex County, Massachusetts. The name is the one the United States Board on Geographic Names has recorded; what the place is called locally is filed separately as an attested claim.
Place
official layer
The official layer: what an authority with the power to draw a boundary has recorded. This record carries NO BOUNDARY — the authority entered a name, and the archive holds that and says so rather than implying an extent nobody drew.
- Filed by this archive as
- water
- Authority
- United States Board on Geographic Names
- GNIS feature
606456
Questions this record answers
Each answer is composed only from fields this record carries, and names the attestation for what it says. A question the record cannot answer from its own attested content is not asked here. Where a boundary is described as official it was promulgated by an authority with the power to draw it and is not amended by anything on the vernacular layer; where it is described as vernacular it is held by attestation alone and amends no official boundary.
Where is Salt Marsh, and what does the archive hold for it?
Salt Marsh is recorded by the United States Board on Geographic Names as a swamp. The archive holds NO BOUNDARY for it — only a point. Where a source registers a name and a location and draws no outline, the archive records the point and says so, rather than implying an extent nobody drew.
Attested by: USGS Geographic Names Information System — Domestic Names, Massachusetts, retrieved 2 September 2026, under United States Government Work — public domain.
Who recorded the name Salt Marsh?
United States Board on Geographic Names recorded it, as feature 606456 on the federal register of geographic names. What that authority standardizes is the NAME, not an extent: it drew no boundary, and the archive holds none.
Attested by: USGS Geographic Names Information System — Domestic Names, Massachusetts, retrieved 2 September 2026, under United States Government Work — public domain.
What is the federal feature identifier for Salt Marsh?
GNIS feature 606456, carried in this record's provenance from the USGS Domestic Names file at accession. The archive surfaces it; it does not infer it.
Attested by: USGS Geographic Names Information System, domestic feature 606456. USGS Geographic Names Information System — Domestic Names, Massachusetts, retrieved 2 September 2026, under United States Government Work — public domain.
What else does the world call Salt Marsh?
The archive reconciles this record to USGS Geographic Names Information System (606456); Wikidata (Q49221229). Each identity carries the method that produced it, and any candidate the archive did not assert is published in the reconciliation ledger rather than left absent.
Attested by: 606456 — USGS GNIS domestic feature id 606456, decided 3 September 2026 by archive-ingest 0.1.0. Q49221229 — wdt:P590 = 606456 on Q49221229 (Salt Marsh), decided 3 September 2026 by archive-ingest 0.1.0
What does the archive hold for Salt Marsh, and under what license?
The Boston Archive holds this record of Salt Marsh from USGS Geographic Names Information System — Domestic Names, Massachusetts, retrieved 2 September 2026, under United States Government Work — public domain (public domain). 4 recorded transforms stand between the retrieved bytes and this record. Attribution is due to United States Geological Survey.
Attested by: USGS Geographic Names Information System — Domestic Names, Massachusetts, retrieved 2 September 2026, under United States Government Work — public domain.
This record, elsewhere
Identities the archive asserts, each named with the method that produced it. Candidates the archive did not assert here are held in the reconciliation ledger and are shown below, under candidates the archive declined, and in the reconciliation ledger. Each method is stated in full — the procedure, the value it was compared against, and the date it was decided — in this record's machine rendering.
- USGS Geographic Names Information System —
606456Method: gnis-feature-id-recorded-at-accession · Matched against: USGS GNIS domestic feature id 606456 · Decided 3 September 2026 - Wikidata —
Q49221229Method: wikidata-p590-exact-identifier-join · Matched against: wdt:P590 = 606456 on Q49221229 (Salt Marsh) · Decided 3 September 2026
Identity
- Identifier
- urn:lemay:boston:entity:salt-marsh-3
- Canonical URL
- https://boston.fyi/place/salt-marsh-3
- As JSON
- https://boston.fyi/place/salt-marsh-3.json
- Version
- 1 · last changed 2 September 2026
Provenance
- Source
- USGS Geographic Names Information System — Domestic Names, Massachusetts — source of record
- License
- United States Government Work — public domain (public_domain)
- Retrieved
- 2 September 2026
- Source identifier
- 606456
- Attribution
- United States Geological Survey
- Rights as stated
- A work of the United States government; not subject to copyright protection within the United States (17 U.S.C. § 105).
Transform ladder
| # | Operation | Description | Tool |
|---|---|---|---|
| 1 | fetch | retrieved the Domestic Names file for Massachusetts from the USGS staged-products endpoint | archive-ingest 0.1.0 |
| 2 | decompress | inflated the pipe-delimited names member from the ZIP container | archive-ingest 0.1.0 |
| 3 | filter | selected features in Suffolk County or mapped on a Boston quadrangle, by the federal record's own county and map fields | archive-ingest 0.1.0 |
| 4 | normalize | the federal feature name became the record title unaltered; the decimal coordinates were carried across as a point, not a boundary | archive-ingest 0.1.0 |