# Gravelly Island

Gravelly Island is an island in [Lake Michigan](https://ontology.bommaritollc.com/id/01a0ddfe-da8b-736c-b10c-b5ac4195f147), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa), in the [Lake Michigan (HUC10 0419000002)](https://ontology.bommaritollc.com/id/01a0de92-1f2c-768f-8a9b-4fde379fd131) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba25f30140b6>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Lake Michigan](https://ontology.bommaritollc.com/id/01a0ddfe-da8b-736c-b10c-b5ac4195f147)

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

Location: 45.52165, -86.72596 (box -86.72596, 45.52165, -86.72596, 45.52165; west, south, east, north)

- `adms:identifier`: [gnis 627250](https://ontology.bommaritollc.com/id/01a0ddfe-b6a6-7777-bb12-ef5b6889ba4a)
- `dcterms:type`: [island](https://ontology.bommaritollc.com/vocab/geo/gnisIsland)
- `geo:hasDefaultGeometry`: [point of Gravelly Island](https://ontology.bommaritollc.com/id/01a0ddfe-ecff-7584-9fc3-858dc9703cd4)
- `geo:hasGeometry`: [point of Gravelly Island](https://ontology.bommaritollc.com/id/01a0ddfe-ecff-7584-9fc3-858dc9703cd4)
- **in watershed** (`bcgeo:inWatershed`): [Lake Michigan (HUC10 0419000002)](https://ontology.bommaritollc.com/id/01a0de92-1f2c-768f-8a9b-4fde379fd131)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba2458d534e0)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4dec-75ac-9242-f9b057b228b2)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de86-db61-749b-aafb-e5cebbe8f72d)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1951-7385-bfba-4bbf6ff8b7ca)
- `schema:containedInPlace`:
  - [Delta County](https://ontology.bommaritollc.com/id/01a0ca47-5c73-7777-b908-2b2e621f2c98)
  - [Fairbanks Township](https://ontology.bommaritollc.com/id/01a0ca47-6044-74f9-9272-0879773f59bb)
  - [Lake Michigan](https://ontology.bommaritollc.com/id/01a0ddfe-da8b-736c-b10c-b5ac4195f147)
- `skos:altLabel`: North Gull Island
- `skos:prefLabel`: Gravelly Island

## Elsewhere

- [Wikidata Q34767896](https://www.wikidata.org/wiki/Q34767896) (proposed match (exactMatch))
- [USGS GNIS 627250](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/627250) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=45.52165&mlon=-86.72596#map=14/45.52165/-86.72596) (45.52165, -86.72596)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=45.52165,-86.72596)
- [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/Q34767896 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-74ab-7542-b39b-6c8d1c7b7832)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba25f30140b6.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba25f30140b6.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba25f30140b6.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba25f30140b6)
Cite as: Gravelly Island. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-b6a5-77be-87fb-ba25f30140b6
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.