# Lyon Lake

Lyon Lake is a lake in [Fredonia Township](https://ontology.bommaritollc.com/id/01a0ca47-6ff6-77b4-a54c-3f67ae4f0fbf), [Calhoun County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f41dde71a12f), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (37.2 ha), in the [Nottawa Creek (HUC10 0405000103)](https://ontology.bommaritollc.com/id/01a0de92-1d0f-77b3-bca1-443306f9d5ff) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-179a6b99df4d>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Calhoun County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f41dde71a12f) › [Fredonia Township](https://ontology.bommaritollc.com/id/01a0ca47-6ff6-77b4-a54c-3f67ae4f0fbf)

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

Location: 42.18857, -84.96669 (box -84.97114, 42.18429, -84.96254, 42.19253; west, south, east, north)

- `adms:identifier`: [gnis 631240](https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-17a3cfe64cee)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Lyon Lake](https://ontology.bommaritollc.com/id/01a0de2c-cf15-7411-9ad6-34b78fd1ff43)
- `geo:hasGeometry`:
  - [point of Lyon Lake](https://ontology.bommaritollc.com/id/01a0ddfe-f536-7065-ab77-d65c37a5cb49)
  - [shape of Lyon Lake](https://ontology.bommaritollc.com/id/01a0de2c-cf15-7411-9ad6-34b78fd1ff43)
- `geo:hasMetricArea`: 371876.5 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Nottawa Creek (HUC10 0405000103)](https://ontology.bommaritollc.com/id/01a0de92-1d0f-77b3-bca1-443306f9d5ff)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-17996de6da48)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-5389-70b7-9707-c17d76b597b8)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1682-7570-b2f6-8920da3c6410)
- `schema:containedInPlace`:
  - [Calhoun County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f41dde71a12f)
  - [Fredonia Township](https://ontology.bommaritollc.com/id/01a0ca47-6ff6-77b4-a54c-3f67ae4f0fbf)
- `skos:prefLabel`: Lyon Lake

## Elsewhere

- [Wikidata Q6709638](https://www.wikidata.org/wiki/Q6709638) (proposed match (exactMatch))
- [USGS GNIS 631240](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/631240) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=42.18857&mlon=-84.96669#map=14/42.18857/-84.96669) (42.18857, -84.96669)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=42.18857,-84.96669)
- [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/Q6709638 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-75f6-7667-964d-c8ba1321eabd)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-179a6b99df4d.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-179a6b99df4d.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-179a6b99df4d.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-179a6b99df4d)
Cite as: Lyon Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-bdb8-7272-bcc8-179a6b99df4d
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.