# Grass Lake

Grass Lake is a lake in [Porter Township](https://ontology.bommaritollc.com/id/01a0ca47-7902-7128-a715-e5aa06e07234), [Van Buren County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f4281d0bb13f), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (52.6 ha), in the [Rocky River (HUC10 0405000106)](https://ontology.bommaritollc.com/id/01a0de92-1d16-71e1-b2c5-5f914a5aefda) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69c91346b31>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Van Buren County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f4281d0bb13f) › [Porter Township](https://ontology.bommaritollc.com/id/01a0ca47-7902-7128-a715-e5aa06e07234)

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

Location: 42.10432, -85.82952 (box -85.83656, 42.09980, -85.82324, 42.10941; west, south, east, north)

- `adms:identifier`: [gnis 627176](https://ontology.bommaritollc.com/id/01a0ddfe-b636-7310-8a3b-ec7802767bc3)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Grass Lake](https://ontology.bommaritollc.com/id/01a0de2c-cab7-7767-84a8-d00b2d3bdd56)
- `geo:hasGeometry`:
  - [point of Grass Lake](https://ontology.bommaritollc.com/id/01a0ddfe-ead5-744d-98eb-0419204e64c3)
  - [shape of Grass Lake](https://ontology.bommaritollc.com/id/01a0de2c-cab7-7767-84a8-d00b2d3bdd56)
- `geo:hasMetricArea`: 526160.8 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Rocky River (HUC10 0405000106)](https://ontology.bommaritollc.com/id/01a0de92-1d16-71e1-b2c5-5f914a5aefda)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69b5409c34f)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4dd0-74fa-b61f-14effd77ecd4)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-168b-701e-8c25-ac6f09858ec8)
- `schema:containedInPlace`:
  - [Van Buren County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f4281d0bb13f)
  - [Porter Township](https://ontology.bommaritollc.com/id/01a0ca47-7902-7128-a715-e5aa06e07234)
- `skos:prefLabel`: Grass Lake

## Elsewhere

- [Wikidata Q33257171](https://www.wikidata.org/wiki/Q33257171) (proposed match (exactMatch))
- [USGS GNIS 627176](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/627176) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=42.10432&mlon=-85.82952#map=14/42.10432/-85.82952) (42.10432, -85.82952)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=42.10432,-85.82952)
- [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/Q33257171 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-74a7-778c-804a-1bacc417421e)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69c91346b31.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69c91346b31.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69c91346b31.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69c91346b31)
Cite as: Grass Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-b635-70ed-8667-f69c91346b31
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.