# Saint Marys Lake

Saint Marys Lake is a lake in [Riverton Township](https://ontology.bommaritollc.com/id/01a0ca47-798b-724c-b1c9-65498e134b67), [Mason County](https://ontology.bommaritollc.com/id/01a0ca47-5871-7100-9de8-b80b6da51326), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (45.8 ha), in the [Pentwater River (HUC10 0406010106)](https://ontology.bommaritollc.com/id/01a0de92-1db2-75c0-8841-48650cd890e3) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c6ab88e77d>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Mason County](https://ontology.bommaritollc.com/id/01a0ca47-5871-7100-9de8-b80b6da51326) › [Riverton Township](https://ontology.bommaritollc.com/id/01a0ca47-798b-724c-b1c9-65498e134b67)

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

Location: 43.83553, -86.29325 (box -86.29920, 43.83157, -86.28554, 43.83997; west, south, east, north)

- `adms:identifier`: [gnis 1621489](https://ontology.bommaritollc.com/id/01a0ddfe-d7cb-773d-aebc-0a0e8191f105)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Saint Marys Lake](https://ontology.bommaritollc.com/id/01a0de2c-de84-7741-8816-f24fcf00be3a)
- `geo:hasGeometry`:
  - [point of Saint Marys Lake](https://ontology.bommaritollc.com/id/01a0ddff-15cd-7405-9b38-35296d374ef8)
  - [shape of Saint Marys Lake](https://ontology.bommaritollc.com/id/01a0de2c-de84-7741-8816-f24fcf00be3a)
- `geo:hasMetricArea`: 458113.4 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Pentwater River (HUC10 0406010106)](https://ontology.bommaritollc.com/id/01a0de92-1db2-75c0-8841-48650cd890e3)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c581273af8)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-6756-76f0-8ab5-85c2f3a7abeb)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1750-7619-8626-7cae0c5e3056)
- `schema:containedInPlace`:
  - [Mason County](https://ontology.bommaritollc.com/id/01a0ca47-5871-7100-9de8-b80b6da51326)
  - [Riverton Township](https://ontology.bommaritollc.com/id/01a0ca47-798b-724c-b1c9-65498e134b67)
- `skos:prefLabel`: Saint Marys Lake

## Elsewhere

- [Wikidata Q33305347](https://www.wikidata.org/wiki/Q33305347) (proposed match (exactMatch))
- [USGS GNIS 1621489](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/1621489) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=43.83553&mlon=-86.29325#map=14/43.83553/-86.29325) (43.83553, -86.29325)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=43.83553,-86.29325)
- [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/Q33305347 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-791e-718d-a736-2cec0e34a8e6)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c6ab88e77d.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c6ab88e77d.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c6ab88e77d.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c6ab88e77d)
Cite as: Saint Marys Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-d7ca-715d-9a48-c8c6ab88e77d
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.