# Grass Lake

Grass Lake is a lake in [Alpena Township](https://ontology.bommaritollc.com/id/01a0ca47-6b49-753b-9fab-78c6f3c32fc8), [Alpena County](https://ontology.bommaritollc.com/id/01a0ca47-5ba1-75cb-ad10-803f5773865d), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (1.4 km²), in the [Swan River-Frontal Lake Huron (HUC10 0407000303)](https://ontology.bommaritollc.com/id/01a0de92-1e10-76bc-95e5-e1cab09a3323) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e127413357>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Alpena County](https://ontology.bommaritollc.com/id/01a0ca47-5ba1-75cb-ad10-803f5773865d) › [Alpena Township](https://ontology.bommaritollc.com/id/01a0ca47-6b49-753b-9fab-78c6f3c32fc8)

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

Location: 45.12706, -83.33817 (box -83.34752, 45.11793, -83.33012, 45.13592; west, south, east, north)

- `adms:identifier`: [gnis 627216](https://ontology.bommaritollc.com/id/01a0ddfe-b695-71be-a8a2-525d06cbae8d)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Grass Lake](https://ontology.bommaritollc.com/id/01a0de2c-cac5-77ea-9eac-dd4dedb8221e)
- `geo:hasGeometry`:
  - [point of Grass Lake](https://ontology.bommaritollc.com/id/01a0ddfe-eae3-73f8-9a87-877c353bbf80)
  - [shape of Grass Lake](https://ontology.bommaritollc.com/id/01a0de2c-cac5-77ea-9eac-dd4dedb8221e)
- `geo:hasMetricArea`: 1364587.2 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Swan River-Frontal Lake Huron (HUC10 0407000303)](https://ontology.bommaritollc.com/id/01a0de92-1e10-76bc-95e5-e1cab09a3323)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e01fe9aa80)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4de0-76c6-bff4-2b595efb096f)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-17c8-74ed-ac7e-8e6fd5384292)
- `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)
- `skos:prefLabel`: Grass Lake

## Elsewhere

- [Wikidata Q88273201](https://www.wikidata.org/wiki/Q88273201) (proposed match (exactMatch))
- [USGS GNIS 627216](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/627216) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=45.12706&mlon=-83.33817#map=14/45.12706/-83.33817) (45.12706, -83.33817)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=45.12706,-83.33817)
- [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/Q88273201 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-74a9-761a-87f3-8b281aff853f)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e127413357.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e127413357.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e127413357.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e127413357)
Cite as: Grass Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-b694-74e5-b4ab-07e127413357
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.