The Boston ArchiveBoston, Massachusetts

Dataset

Fire Hydrants

City of Boston fire hydrants. Maintained and updated by Boston Water and Sewer Commission (BWSC). Last updated January 2019.

Dataset

Publisher
Boston Maps
Spatial coverage
Boston, Massachusetts
Fields
28
Keywords
bfd, boston, bostonmaps, bparc, ckan, fire, hubhacks, hydrants, open
Publisher's page
https://data.boston.gov/dataset/fire-hydrants

Artifacts

“Preserved” means the archive holds the bytes and their digest. “Referenced” means it holds the record of them and nothing more. The archive does not claim a holding it cannot prove.

FormatPreservationSizeDigestSource
ArcGIS GeoServices REST APIreferenced——source
CSVpreserved4950386a9d7156dbe6fa2eee8a07ca438a69904b79f0012f0849fd4eca10d2360258b33source
GeoJSONpreserved10728946684e26859dad2489f8ba4194e872a079ebe28a8578bab5f110f382b64a2c7a2asource
HTMLreferenced——source
KMLpreserved1720329408e866afde43e11791261beaa2c8f69ef3bf8253b6dfe19eb27c35706184e81source
SHPreferenced——source

Column dictionary

The publisher's own dictionary, preserved verbatim. The archive does not reword a schema into its own vocabulary — how the publisher named a column is evidence about the publisher.

ColumnTypeDescription
OBJECTID_1text
ANCILLARYRtext
ENABLEDnumeric
FEATURE_IDnumeric
PLACEMENT_text
PLACEMENT1timestamp
UPDATE_IDtext
UPDATE_DATtimestamp
SYNCH_FLAGtext
SYMBOL_ROTnumeric
FACILITY_Itext
SUBTYPE_COnumeric
SERVICE_ARtext
INSTALL_DAtimestamp
HYDRANT_MAtext
OWNER_CODEtext
METERED_FLtext
ADDRESS_NUtext
STREET_FEAnumeric
CROSS_STREnumeric
LOC_SOURCEtext
MANUFACTURnumeric
HYDRANT_MOtext
Longitudenumeric
Latitudenumeric
shape_wkttext
POINT_Xnumeric
POINT_Ynumeric

The complete dictionary, exactly as the publisher words it, is served as its own holding at /asset/7adeb78e1eb219362ba91c004b56d97a/fire-hydrants-columns.json — 1949 bytes, SHA-256 7adeb78e1eb21936…, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

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.

Who publishes Fire Hydrants, and under what license?

Boston Maps publishes it. The archive accessioned it under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0 (public domain), and holds the publisher's own column dictionary verbatim rather than reworded into the archive's vocabulary — how a publisher names a column is evidence about the publisher.

Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

What does Fire Hydrants cover?

In space, Boston, Massachusetts.

Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

How large is Fire Hydrants?

28 columns, as the publisher's own catalog reports them.

Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

Can the archive hand back the bytes of Fire Hydrants?

Yes, for 3 of 6 distributions. Each preserved artifact is served at its own address with the digest recorded at retrieval emitted in an x-archive-sha256 header, and is handed over as an attachment: preserved material is evidence, not content, and is never rendered on this origin.

Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

What does the archive hold for Fire Hydrants, and under what license?

The Boston Archive holds this record of Fire Hydrants from City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0 (public domain). 3 recorded transforms stand between the retrieved bytes and this record. Attribution is due to City of Boston.

Attested by: City of Boston Open Data Portal (Analyze Boston), retrieved 2 September 2026, under Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0.

Identity

Identifier
urn:lemay:boston:dataset:fire-hydrants
Canonical URL
https://boston.fyi/dataset/fire-hydrants
As JSON
https://boston.fyi/dataset/fire-hydrants.json
Version
2 · last changed 13 September 2026

Provenance

Source
City of Boston Open Data Portal (Analyze Boston) — source of record
License
Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0 (public_domain)
Retrieved
2 September 2026
Source identifier
fire-hydrants
Attribution
City of Boston
Rights as stated
Open Data Commons Public Domain Dedication and License (PDDL)

Transform ladder

#OperationDescriptionTool
1fetchretrieved the dataset's metadata record from the CKAN package_show endpointarchive-ingest 0.1.0
2normalizemapped the portal's catalog fields onto the archive's Dataset record; the publisher's own wording and column dictionary are preserved verbatimarchive-ingest 0.1.0
3externalize-column-dictionaryThe publisher's 28-column dictionary left the inline page graph and became a preserved holding at /asset/7adeb78e1eb219362ba91c004b56d97a/fire-hydrants-columns.json, served verbatim with its own digest. The record's stored field schema is unchanged; the graph now addresses it instead of carrying it.archive-ingest 0.1.0