# Grass Slough

Grass Slough is a lake in [Columbus Township](https://ontology.bommaritollc.com/id/01a0ca47-6d9f-713b-9635-d16a706c7273), [Luce County](https://ontology.bommaritollc.com/id/01a0ca47-5c41-7728-b7f8-b3973ec5773e), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (20.1 ha), in the [Headwaters Tahquamenon River (HUC10 0402020201)](https://ontology.bommaritollc.com/id/01a0de92-1c7c-7490-bb04-bc36574f91ec) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-950a9757e79f>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Luce County](https://ontology.bommaritollc.com/id/01a0ca47-5c41-7728-b7f8-b3973ec5773e) › [Columbus Township](https://ontology.bommaritollc.com/id/01a0ca47-6d9f-713b-9635-d16a706c7273)

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

Location: 46.46045, -85.81305 (box -85.82917, 46.45944, -85.80778, 46.46904; west, south, east, north)

- `adms:identifier`: [gnis 627224](https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-9513208d91b5)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Grass Slough](https://ontology.bommaritollc.com/id/01a0de2c-cac6-7047-905a-be5a349b5bfe)
- `geo:hasGeometry`:
  - [point of Grass Slough](https://ontology.bommaritollc.com/id/01a0ddfe-eae4-745d-a814-317a0c92e89b)
  - [shape of Grass Slough](https://ontology.bommaritollc.com/id/01a0de2c-cac6-7047-905a-be5a349b5bfe)
- `geo:hasMetricArea`: 200885.1 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Headwaters Tahquamenon River (HUC10 0402020201)](https://ontology.bommaritollc.com/id/01a0de92-1c7c-7490-bb04-bc36574f91ec)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-9509ed79f1e0)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4de3-7580-8ddf-a65a3d8152be)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-15d0-7744-9c51-da188b7bda53)
- `schema:containedInPlace`:
  - [Luce County](https://ontology.bommaritollc.com/id/01a0ca47-5c41-7728-b7f8-b3973ec5773e)
  - [Columbus Township](https://ontology.bommaritollc.com/id/01a0ca47-6d9f-713b-9635-d16a706c7273)
- `skos:prefLabel`: Grass Slough

## Elsewhere

- [Wikidata Q88273203](https://www.wikidata.org/wiki/Q88273203) (proposed match (exactMatch))
- [USGS GNIS 627224](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/627224) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=46.46045&mlon=-85.81305#map=14/46.46045/-85.81305) (46.46045, -85.81305)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=46.46045,-85.81305)
- [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/Q88273203 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-74a9-761a-87f3-8b307ac7bc21)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-950a9757e79f.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-950a9757e79f.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-950a9757e79f.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-950a9757e79f)
Cite as: Grass Slough. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-b698-76d7-b878-950a9757e79f
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.