# Union Lake

Union Lake is a reservoir in [Branch County](https://ontology.bommaritollc.com/id/01a0ca47-5a46-7564-a1ca-980f16f909b8), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (2.2 km²), in the [Swan Creek-Saint Joseph River (HUC10 0405000104)](https://ontology.bommaritollc.com/id/01a0de92-1d11-725f-93de-58e11ff1c7ed) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-303084af451b>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Branch County](https://ontology.bommaritollc.com/id/01a0ca47-5a46-7564-a1ca-980f16f909b8)

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

Location: 42.05290, -85.18138 (box -85.20313, 42.04185, -85.15941, 42.06488; west, south, east, north)

- `adms:identifier`: [gnis 1615348](https://ontology.bommaritollc.com/id/01a0ddfe-cd62-765c-a2a2-645a31539ebb)
- `dcterms:type`: [reservoir](https://ontology.bommaritollc.com/vocab/geo/gnisReservoir)
- `geo:hasDefaultGeometry`: [shape of Union Lake](https://ontology.bommaritollc.com/id/01a0de2c-d7e2-7625-b536-48a7f440823a)
- `geo:hasGeometry`:
  - [point of Union Lake](https://ontology.bommaritollc.com/id/01a0ddff-08b5-77c5-8e3d-498cfde0f607)
  - [shape of Union Lake](https://ontology.bommaritollc.com/id/01a0de2c-d7e2-7625-b536-48a7f440823a)
- `geo:hasMetricArea`: 2201311.7 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Swan Creek-Saint Joseph River (HUC10 0405000104)](https://ontology.bommaritollc.com/id/01a0de92-1d11-725f-93de-58e11ff1c7ed)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-302fbddb1dd0)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-5f77-7073-ab11-06430be7ce50)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1685-7112-875f-bf988d2dfc6c)
- `schema:containedInPlace`:
  - [Branch County](https://ontology.bommaritollc.com/id/01a0ca47-5a46-7564-a1ca-980f16f909b8)
  - [Sherwood Township](https://ontology.bommaritollc.com/id/01a0ca47-7a4d-7454-8b73-383291b639bc)
  - [Union Township](https://ontology.bommaritollc.com/id/01a0ca47-7ccc-70ff-8172-2134298bc13f)
- `skos:altLabel`:
  - Municipal Pond
  - Tuttle Lake
- `skos:prefLabel`: Union Lake

## Elsewhere

- [Wikidata Q34932100](https://www.wikidata.org/wiki/Q34932100) (proposed match (exactMatch))
- [USGS GNIS 1615348](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/1615348) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=42.05290&mlon=-85.18138#map=14/42.05290/-85.18138) (42.05290, -85.18138)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=42.05290,-85.18138)
- [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/Q34932100 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-77f2-72c2-bc8d-f364bfcc1ad2)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-303084af451b.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-303084af451b.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-303084af451b.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-303084af451b)
Cite as: Union Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-cd61-77eb-80d0-303084af451b
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.