# Rocky Island

Rocky 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-c67e-77db-ad0a-06ac949ea711>

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: 45.60915, -86.70957 (box -86.70957, 45.60915, -86.70957, 45.60915; west, south, east, north)

- `adms:identifier`: [gnis 636099](https://ontology.bommaritollc.com/id/01a0ddfe-c67f-7127-829d-e3141f1bbd6b)
- `dcterms:type`: [island](https://ontology.bommaritollc.com/vocab/geo/gnisIsland)
- `geo:hasDefaultGeometry`: [point of Rocky Island](https://ontology.bommaritollc.com/id/01a0ddff-006b-7591-828f-79992d755de4)
- `geo:hasGeometry`: [point of Rocky Island](https://ontology.bommaritollc.com/id/01a0ddff-006b-7591-828f-79992d755de4)
- **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-c67e-77db-ad0a-06ab5f7551e7)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-59e5-7260-96e7-59adda8e63f1)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de86-dbda-7038-b90f-73444c0686cc)
  - [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:prefLabel`: Rocky Island

## Elsewhere

- [Wikidata Q49675056](https://www.wikidata.org/wiki/Q49675056) (proposed match (exactMatch))
- [USGS GNIS 636099](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/636099) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=45.60915&mlon=-86.70957#map=14/45.60915/-86.70957) (45.60915, -86.70957)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=45.60915,-86.70957)
- [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/Q49675056 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-76f3-755e-be21-f5a3f61086dc)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-c67e-77db-ad0a-06ac949ea711.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-c67e-77db-ad0a-06ac949ea711.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-c67e-77db-ad0a-06ac949ea711.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-c67e-77db-ad0a-06ac949ea711)
Cite as: Rocky Island. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-c67e-77db-ad0a-06ac949ea711
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.