# Hartwick Lake

Hartwick Lake is a lake in [Grayling Township](https://ontology.bommaritollc.com/id/01a0ca47-702f-70fb-bebd-db3296b1732f), [Crawford County](https://ontology.bommaritollc.com/id/01a0ca47-5aed-72c2-8f07-94c56ff8234b), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (0.7 ha), in the [East Branch Au Sable River-Au Sable River (HUC10 0407000703)](https://ontology.bommaritollc.com/id/01a0de92-1e44-7192-8a7d-230e7024b245) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44279b65e6f7>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Crawford County](https://ontology.bommaritollc.com/id/01a0ca47-5aed-72c2-8f07-94c56ff8234b) › [Grayling Township](https://ontology.bommaritollc.com/id/01a0ca47-702f-70fb-bebd-db3296b1732f)

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

Location: 44.73596, -84.65692 (box -84.65742, 44.73561, -84.65649, 44.73640; west, south, east, north)

- `adms:identifier`: [gnis 2498784](https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44302952f98d)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Hartwick Lake](https://ontology.bommaritollc.com/id/01a0de2c-e268-7182-8408-d995ad46368d)
- `geo:hasGeometry`:
  - [point of Hartwick Lake](https://ontology.bommaritollc.com/id/01a0ddff-1d91-7756-86de-646d816b59e3)
  - [shape of Hartwick Lake](https://ontology.bommaritollc.com/id/01a0de2c-e268-7182-8408-d995ad46368d)
- `geo:hasMetricArea`: 7317.4 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [East Branch Au Sable River-Au Sable River (HUC10 0407000703)](https://ontology.bommaritollc.com/id/01a0de92-1e44-7192-8a7d-230e7024b245)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44263e718ee3)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-6bc8-7483-8592-67ca2a3a8135)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1805-7712-afbc-a2ba16da61d7)
- `schema:containedInPlace`:
  - [Crawford County](https://ontology.bommaritollc.com/id/01a0ca47-5aed-72c2-8f07-94c56ff8234b)
  - [Grayling Township](https://ontology.bommaritollc.com/id/01a0ca47-702f-70fb-bebd-db3296b1732f)
- `skos:prefLabel`: Hartwick Lake

## Elsewhere

- [Wikidata Q88279509](https://www.wikidata.org/wiki/Q88279509) (proposed match (exactMatch))
- [USGS GNIS 2498784](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/2498784) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=44.73596&mlon=-84.65692#map=14/44.73596/-84.65692) (44.73596, -84.65692)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=44.73596,-84.65692)
- [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/Q88279509 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7a14-7178-910b-0385c7c4ea0b)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44279b65e6f7.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44279b65e6f7.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44279b65e6f7.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44279b65e6f7)
Cite as: Hartwick Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-de7c-76a3-a303-44279b65e6f7
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.