# Saint John Lake

Saint John Lake is a lake in [Leoni Township](https://ontology.bommaritollc.com/id/01a0ca47-767c-741d-b5d7-8e620b9ecedf), [Jackson County](https://ontology.bommaritollc.com/id/01a0ca47-5d2e-7158-b23f-ecd175f58db5), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (4.8 ha), in the [Portage River-Grand River (HUC10 0405000402)](https://ontology.bommaritollc.com/id/01a0de92-1d65-76e2-ab0b-eba88717aceb) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32226fb09ee1>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Jackson County](https://ontology.bommaritollc.com/id/01a0ca47-5d2e-7158-b23f-ecd175f58db5) › [Leoni Township](https://ontology.bommaritollc.com/id/01a0ca47-767c-741d-b5d7-8e620b9ecedf)

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

Location: 42.31980, -84.30929 (box -84.31107, 42.31839, -84.30756, 42.32118; west, south, east, north)

- `adms:identifier`: [gnis 636705](https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-322b4af6265b)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Saint John Lake](https://ontology.bommaritollc.com/id/01a0de2c-d464-75b9-bcc9-d7a168e5e096)
- `geo:hasGeometry`:
  - [point of Saint John Lake](https://ontology.bommaritollc.com/id/01a0ddff-00c6-7712-a86a-17e4aedc0f4f)
  - [shape of Saint John Lake](https://ontology.bommaritollc.com/id/01a0de2c-d464-75b9-bcc9-d7a168e5e096)
- `geo:hasMetricArea`: 48323.1 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Portage River-Grand River (HUC10 0405000402)](https://ontology.bommaritollc.com/id/01a0de92-1d65-76e2-ab0b-eba88717aceb)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32215d5a9075)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-5aad-7288-a0a5-042e5ea0e736)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-16f1-7705-8998-d3981d4a9d6d)
- `schema:containedInPlace`:
  - [Jackson County](https://ontology.bommaritollc.com/id/01a0ca47-5d2e-7158-b23f-ecd175f58db5)
  - [Leoni Township](https://ontology.bommaritollc.com/id/01a0ca47-767c-741d-b5d7-8e620b9ecedf)
- `skos:prefLabel`: Saint John Lake

## Elsewhere

- [Wikidata Q88277886](https://www.wikidata.org/wiki/Q88277886) (proposed match (exactMatch))
- [USGS GNIS 636705](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/636705) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=42.31980&mlon=-84.30929#map=14/42.31980/-84.30929) (42.31980, -84.30929)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=42.31980,-84.30929)
- [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/Q88277886 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7701-71d3-bbd6-0079278bbc4b)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32226fb09ee1.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32226fb09ee1.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32226fb09ee1.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32226fb09ee1)
Cite as: Saint John Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-c717-756f-b656-32226fb09ee1
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.