# Grass Island

Grass Island is an island in [Lake Huron](https://ontology.bommaritollc.com/id/01a0ddfe-dba9-7007-b9a4-2e346853a6ba), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa), in the [Drummond Island (HUC10 0424000201)](https://ontology.bommaritollc.com/id/01a0de92-1f4f-7610-999d-aeeffda6e949) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa330caf91c>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Lake Huron](https://ontology.bommaritollc.com/id/01a0ddfe-dba9-7007-b9a4-2e346853a6ba)

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

Location: 45.03557, -83.43914 (box -83.43914, 45.03557, -83.43914, 45.03557; west, south, east, north)

- `adms:identifier`: [gnis 627174](https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aabc2a395fd)
- `dcterms:type`: [island](https://ontology.bommaritollc.com/vocab/geo/gnisIsland)
- `geo:hasDefaultGeometry`: [point of Grass Island](https://ontology.bommaritollc.com/id/01a0ddfe-ead4-76c0-91fb-e04fc250e2f4)
- `geo:hasGeometry`: [point of Grass Island](https://ontology.bommaritollc.com/id/01a0ddfe-ead4-76c0-91fb-e04fc250e2f4)
- **in watershed** (`bcgeo:inWatershed`): [Drummond Island (HUC10 0424000201)](https://ontology.bommaritollc.com/id/01a0de92-1f4f-7610-999d-aeeffda6e949)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa28583097e)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4dcf-7586-b206-61b787df1df0)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de86-db60-7076-9a39-753a13e30352)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1981-77ee-8585-ea2301f4465c)
- `schema:containedInPlace`:
  - [Alpena County](https://ontology.bommaritollc.com/id/01a0ca47-5ba1-75cb-ad10-803f5773865d)
  - [Alpena Township](https://ontology.bommaritollc.com/id/01a0ca47-6b49-753b-9fab-78c6f3c32fc8)
  - [Lake Huron](https://ontology.bommaritollc.com/id/01a0ddfe-dba9-7007-b9a4-2e346853a6ba)
- `skos:prefLabel`: Grass Island

## Elsewhere

- [Wikidata Q49639511](https://www.wikidata.org/wiki/Q49639511) (proposed match (exactMatch))
- [USGS GNIS 627174](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/627174) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=45.03557&mlon=-83.43914#map=14/45.03557/-83.43914) (45.03557, -83.43914)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=45.03557,-83.43914)
- [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/Q49639511 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-74a7-778c-804a-1ba8910dec47)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa330caf91c.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa330caf91c.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa330caf91c.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa330caf91c)
Cite as: Grass Island. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-b634-713c-b8ca-6aa330caf91c
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.