# Lake Eighteen

Lake Eighteen is a lake in [Corwith Township](https://ontology.bommaritollc.com/id/01a0ca47-69de-77d9-b665-2ec3d91b8856), [Otsego County](https://ontology.bommaritollc.com/id/01a0ca47-5dbc-76a7-9cd6-a55d33bece50), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (8.4 ha), in the [Sturgeon River (HUC10 0407000401)](https://ontology.bommaritollc.com/id/01a0de92-1e18-7093-a2cd-85a07c65111d) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134b20946a20>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Otsego County](https://ontology.bommaritollc.com/id/01a0ca47-5dbc-76a7-9cd6-a55d33bece50) › [Corwith Township](https://ontology.bommaritollc.com/id/01a0ca47-69de-77d9-b665-2ec3d91b8856)

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

Location: 45.16322, -84.72640 (box -84.72872, 45.16130, -84.72414, 45.16555; west, south, east, north)

- `adms:identifier`: [gnis 625409](https://ontology.bommaritollc.com/id/01a0ddfe-b38b-721c-af46-7b2018e1d5c1)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Lake Eighteen](https://ontology.bommaritollc.com/id/01a0de2c-c931-70b4-96d8-1f89d9713568)
- `geo:hasGeometry`:
  - [point of Lake Eighteen](https://ontology.bommaritollc.com/id/01a0ddfe-e7d7-72fe-aaca-9d365eefe3c5)
  - [shape of Lake Eighteen](https://ontology.bommaritollc.com/id/01a0de2c-c931-70b4-96d8-1f89d9713568)
- `geo:hasMetricArea`: 83995.8 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Sturgeon River (HUC10 0407000401)](https://ontology.bommaritollc.com/id/01a0de92-1e18-7093-a2cd-85a07c65111d)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134a02439e45)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-4bcd-77d7-a939-c303ea7d4e75)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-17cf-75c7-af9b-4dfc83ef9f87)
- `schema:containedInPlace`:
  - [Otsego County](https://ontology.bommaritollc.com/id/01a0ca47-5dbc-76a7-9cd6-a55d33bece50)
  - [Corwith Township](https://ontology.bommaritollc.com/id/01a0ca47-69de-77d9-b665-2ec3d91b8856)
- `skos:prefLabel`: Lake Eighteen

## Elsewhere

- [Wikidata Q33268846](https://www.wikidata.org/wiki/Q33268846) (proposed match (exactMatch))
- [USGS GNIS 625409](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/625409) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=45.16322&mlon=-84.72640#map=14/45.16322/-84.72640) (45.16322, -84.72640)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=45.16322,-84.72640)
- [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/Q33268846 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7475-70ee-88a5-a1efa756914b)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134b20946a20.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134b20946a20.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134b20946a20.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134b20946a20)
Cite as: Lake Eighteen. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-b38a-7768-b645-134b20946a20
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.