# shape of O'Brien Lake

IRI: <https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd8382cc07bd>

Type: [geo:Geometry](http://www.opengis.net/ont/geosparql#Geometry)

Location: 41.97431, -86.25173 (box -86.25325, 41.97261, -86.25021, 41.97601; west, south, east, north)

- `adms:identifier`: [gnis-3dhp-shape 633793](https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd89665cb603)
- `geo:asWKT`: <http://www.opengis.net/def/crs/OGC/1.3/CRS84> MULTIPOLYGON (((-86.252214 41.976008, -86.253253 41.975025, -86.252939 41.973369, -86.251874 41.972615, -86.2508 41.973119, -86.250208 41.975169, -86.2507 41.975791, -86.252009 41.975678, -86.252214 41.976008))) (geo:wktLiteral)
- `prov:wasDerivedFrom`: [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd82d6d129e0)
- **simplification tolerance** (`bcgeo:simplificationTolerance`): 25.0 (xsd:double)

## Elsewhere

- [OpenStreetMap](https://www.openstreetmap.org/?mlat=41.97431&mlon=-86.25173#map=14/41.97431/-86.25173) (41.97431, -86.25173)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=41.97431,-86.25173)
- [Source](https://3dhp.nationalmap.gov/arcgis/rest/services/usgs_3dhp_all/FeatureServer) (3dhp.nationalmap.gov)

## Pointing here

- Default geometry of (1; `geo:hasDefaultGeometry`):
  - [O'Brien Lake](https://ontology.bommaritollc.com/id/01a0ddfe-c251-7750-bc46-037e1691a680)
- Geometry of (1; `geo:hasGeometry`):
  - [O'Brien Lake](https://ontology.bommaritollc.com/id/01a0ddfe-c251-7750-bc46-037e1691a680)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd8382cc07bd.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd8382cc07bd.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd8382cc07bd.nt), [HTML](https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd8382cc07bd)
Cite as: shape of O'Brien Lake. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0de2c-d1d1-74ba-946e-bd8382cc07bd
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.