# Polack Lake

Polack Lake is a lake in [Nahma Township](https://ontology.bommaritollc.com/id/01a0ca47-77da-7722-8cd8-003c85b0bd9e), [Delta County](https://ontology.bommaritollc.com/id/01a0ca47-5c73-7777-b908-2b2e621f2c98), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (8.0 ha), in the [Sturgeon River-Frontal Big Bay De Noc (HUC10 0403011202)](https://ontology.bommaritollc.com/id/01a0de92-1ce5-756e-b91a-424c87933f64) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30711d77bcba>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Delta County](https://ontology.bommaritollc.com/id/01a0ca47-5c73-7777-b908-2b2e621f2c98) › [Nahma Township](https://ontology.bommaritollc.com/id/01a0ca47-77da-7722-8cd8-003c85b0bd9e)

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

Location: 46.03576, -86.72421 (box -86.72679, 46.03455, -86.72193, 46.03689; west, south, east, north)

- `adms:identifier`: [gnis 635205](https://ontology.bommaritollc.com/id/01a0ddfe-c4b8-767f-9619-85b690535c93)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Polack Lake](https://ontology.bommaritollc.com/id/01a0de2c-d320-77cd-8679-e4e612aa687e)
- `geo:hasGeometry`:
  - [point of Polack Lake](https://ontology.bommaritollc.com/id/01a0ddfe-fe0d-7063-8e20-32c66f58a3df)
  - [shape of Polack Lake](https://ontology.bommaritollc.com/id/01a0de2c-d320-77cd-8679-e4e612aa687e)
- `geo:hasMetricArea`: 79561.1 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Sturgeon River-Frontal Big Bay De Noc (HUC10 0403011202)](https://ontology.bommaritollc.com/id/01a0de92-1ce5-756e-b91a-424c87933f64)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30704ff92bc4)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-5900-71be-b029-942fb8455920)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-164c-71d8-aa75-46e9f6290907)
- `schema:containedInPlace`:
  - [Delta County](https://ontology.bommaritollc.com/id/01a0ca47-5c73-7777-b908-2b2e621f2c98)
  - [Nahma Township](https://ontology.bommaritollc.com/id/01a0ca47-77da-7722-8cd8-003c85b0bd9e)
- `skos:prefLabel`: Polack Lake

## Elsewhere

- [Wikidata Q33299960](https://www.wikidata.org/wiki/Q33299960) (proposed match (exactMatch))
- [USGS GNIS 635205](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/635205) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=46.03576&mlon=-86.72421#map=14/46.03576/-86.72421) (46.03576, -86.72421)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=46.03576,-86.72421)
- [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/Q33299960 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-76df-74d2-9acb-4f0d434ea214)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30711d77bcba.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30711d77bcba.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30711d77bcba.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30711d77bcba)
Cite as: Polack Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-c4b7-73c8-b1f0-30711d77bcba
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.