# shape of Lake Trillium

IRI: <https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f4d8989dd8>

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

Location: 47.42957, -87.81868 (box -87.81968, 47.42829, -87.81767, 47.43084; west, south, east, north)

- `adms:identifier`: [gnis-3dhp-shape 631109](https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18faf16bd2e5)
- `geo:asWKT`: <http://www.opengis.net/def/crs/OGC/1.3/CRS84> MULTIPOLYGON (((-87.819683 47.429129, -87.817668 47.428293, -87.819232 47.430839, -87.819683 47.429129))) (geo:wktLiteral)
- `prov:wasDerivedFrom`: [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f370b7e7ff)
- **simplification tolerance** (`bcgeo:simplificationTolerance`): 25.0 (xsd:double)

## Elsewhere

- [OpenStreetMap](https://www.openstreetmap.org/?mlat=47.42957&mlon=-87.81868#map=14/47.42957/-87.81868) (47.42957, -87.81868)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=47.42957,-87.81868)
- [Source](https://3dhp.nationalmap.gov/arcgis/rest/services/usgs_3dhp_all/FeatureServer) (3dhp.nationalmap.gov)

## Pointing here

- Default geometry of (1; `geo:hasDefaultGeometry`):
  - [Lake Trillium](https://ontology.bommaritollc.com/id/01a0ddfe-bd80-74a5-a5a8-ccae93cf5785)
- Geometry of (1; `geo:hasGeometry`):
  - [Lake Trillium](https://ontology.bommaritollc.com/id/01a0ddfe-bd80-74a5-a5a8-ccae93cf5785)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f4d8989dd8.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f4d8989dd8.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f4d8989dd8.nt), [HTML](https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f4d8989dd8)
Cite as: shape of Lake Trillium. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0de2c-cef6-77e0-ac87-18f4d8989dd8
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.