# Gem Island

Gem Island is an island in [Sugar Island Township](https://ontology.bommaritollc.com/id/01a0ca47-7b00-7054-a524-05d3b630bb92), [Chippewa County](https://ontology.bommaritollc.com/id/01a0ca47-5c74-7657-97c2-9bfdfd3bc0fc), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa), in the [Lake George-Saint Marys River (HUC10 0420000208)](https://ontology.bommaritollc.com/id/01a0de92-1f42-7087-944b-42aeac18f289) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f63e96f056f>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Chippewa County](https://ontology.bommaritollc.com/id/01a0ca47-5c74-7657-97c2-9bfdfd3bc0fc) › [Sugar Island Township](https://ontology.bommaritollc.com/id/01a0ca47-7b00-7054-a524-05d3b630bb92)

Type: [geo:Feature](http://www.opengis.net/ont/geosparql#Feature), [schema:Landform](https://schema.org/Landform), [schema:Place](https://schema.org/Place)

Location: 46.43252, -84.17725 (box -84.17725, 46.43252, -84.17725, 46.43252; west, south, east, north)

- `adms:identifier`: [gnis 626710](https://ontology.bommaritollc.com/id/01a0ddfe-b59e-74b5-a62f-1b4e2caf99f8)
- `dcterms:type`: [island](https://ontology.bommaritollc.com/vocab/geo/gnisIsland)
- `geo:hasDefaultGeometry`: [point of Gem Island](https://ontology.bommaritollc.com/id/01a0ddfe-ea7c-7740-9bac-2755bd15cf3a)
- `geo:hasGeometry`: [point of Gem Island](https://ontology.bommaritollc.com/id/01a0ddfe-ea7c-7740-9bac-2755bd15cf3a)
- **in watershed** (`bcgeo:inWatershed`): [Lake George-Saint Marys River (HUC10 0420000208)](https://ontology.bommaritollc.com/id/01a0de92-1f42-7087-944b-42aeac18f289)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f625d9d67dd)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4d59-76a9-8c69-1b69b3542d57)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1972-74b7-acae-69b0872bb53b)
- `schema:containedInPlace`:
  - [Chippewa County](https://ontology.bommaritollc.com/id/01a0ca47-5c74-7657-97c2-9bfdfd3bc0fc)
  - [Sugar Island Township](https://ontology.bommaritollc.com/id/01a0ca47-7b00-7054-a524-05d3b630bb92)
- `skos:prefLabel`: Gem Island

## Elsewhere

- [Wikidata Q49638962](https://www.wikidata.org/wiki/Q49638962) (proposed match (exactMatch))
- [USGS GNIS 626710](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/626710) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=46.43252&mlon=-84.17725#map=14/46.43252/-84.17725) (46.43252, -84.17725)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=46.43252,-84.17725)
- [Source](https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames_MI_Text.zip) (prd-tnm.s3.amazonaws.com)
- [Source](https://3dhp.nationalmap.gov/arcgis/rest/services/usgs_3dhp_all/FeatureServer) (3dhp.nationalmap.gov)
- [Source](https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer) (hydro.nationalmap.gov)

## Pointing here

- Mappings (1; `owl:annotatedSource`):
  - [exactMatch http://www.wikidata.org/entity/Q49638962 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7499-72dd-b6b7-a460efdddb16)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f63e96f056f.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f63e96f056f.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f63e96f056f.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f63e96f056f)
Cite as: Gem Island. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-b59d-761e-b5e6-3f63e96f056f
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.