park · official boundary
Dell Rock
Protected open space in the City of Boston open-space inventory. At 40 Dell Avenue.
Place
official layer
An official boundary, promulgated by an authority with the power to draw it. It is not amended by anything on the vernacular layer.
- Filed by this archive as
- park
- Authority
- City of Boston Parks and Recreation Department
- Within
- Boston
- Area
- 5279 square meters
- Boundary
- held as GeoJSON at
/asset/3f2ed1918800d8afb3ea9471591b0730/dell-rock.geojson— 2715 bytes, exactly as accessioned
Map
image/svg+xml at /asset/308d1205e76c699f0eb67feffaffb853/dell-rock.svg — 1594 bytes, SHA-256 308d1205e76c699f… · Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0The exact coordinates are held separately as
/asset/3f2ed1918800d8afb3ea9471591b0730/dell-rock.geojson (application/geo+json, 2715 bytes, SHA-256 3f2ed1918800d8af…). The map is simplified for drawing; the boundary is not.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 Dell Rock, and what kind of boundary does the archive hold?
Dell Rock is recorded as a park, within Boston. The archive holds its boundary on the official layer: promulgated by an authority with the power to draw it.
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.
Who drew the boundary of Dell Rock?
City of Boston Parks and Recreation Department promulgated it. A boundary with no promulgating authority is an assertion rather than a fact, and this archive files those separately, as claims.
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 Dell Rock?
5279 square meters, computed from the boundary the archive holds and not quoted from elsewhere.
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's map of Dell Rock show?
A static map of the boundary, rendered by the archive on a server and never in a reader's browser, served as image/svg+xml at /asset/308d1205e76c699f0eb67feffaffb853/dell-rock.svg. The exact coordinates it was drawn from are served separately as application/geo+json at /asset/3f2ed1918800d8afb3ea9471591b0730/dell-rock.geojson.
Attested by: Rendered by archive-ingest 0.1.0 from the boundary this archive holds; digest 308d1205e76c699f0eb67feffaffb85372a5e7ffe6598fd4a42dc1058cbe7ed3.
What does the archive hold for Dell Rock, and under what license?
The Boston Archive holds this record of Dell Rock 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). 4 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.
Related records
- located in — Boston
Identity
- Identifier
- urn:lemay:boston:entity:dell-rock
- Canonical URL
- https://boston.fyi/place/dell-rock
- As JSON
- https://boston.fyi/place/dell-rock.json
- Version
- 1 · last changed 2 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
- 272
- Attribution
- City of Boston
- Rights as stated
- Open Data Commons Public Domain Dedication and License (PDDL)
Transform ladder
| # | Operation | Description | Tool |
|---|---|---|---|
| 1 | fetch | retrieved the dataset's GeoJSON from the City of Boston open-data portal | archive-ingest 0.1.0 |
| 2 | normalize | the source's own name field became the record title; no name was supplied by the archive | archive-ingest 0.1.0 |
| 3 | reproject | the source is WGS 84 (EPSG:4326); geometry was set to that SRID without alteration of coordinates | archive-ingest 0.1.0 |
| 4 | externalize-boundary | The boundary left the inline page graph and became two preserved holdings: the exact coordinates at /asset/3f2ed1918800d8afb3ea9471591b0730/dell-rock.geojson and a static map rendered server-side at /asset/308d1205e76c699f0eb67feffaffb853/dell-rock.svg. The stored geometry is unchanged; the record graph now addresses it instead of carrying it. | archive-ingest 0.1.0 |