# Roby Lake

Roby Lake is a lake in [Lake Township](https://ontology.bommaritollc.com/id/01a0ca47-7030-7313-8ef0-aa5937b2d393), [Lake County](https://ontology.bommaritollc.com/id/01a0ca47-5872-7215-a416-09517ba59c7c), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (4.9 ha), in the [Big South Branch Pere Marquette River (HUC10 0406010104)](https://ontology.bommaritollc.com/id/01a0de92-1dab-7663-ab75-b6f88868e731) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-6613d5eed817>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Lake County](https://ontology.bommaritollc.com/id/01a0ca47-5872-7215-a416-09517ba59c7c) › [Lake Township](https://ontology.bommaritollc.com/id/01a0ca47-7030-7313-8ef0-aa5937b2d393)

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

Location: 43.82737, -86.00831 (box -86.01063, 43.82624, -86.00602, 43.82843; west, south, east, north)

- `adms:identifier`: [gnis 636066](https://ontology.bommaritollc.com/id/01a0ddfe-c674-7723-a085-268030c761c1)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Roby Lake](https://ontology.bommaritollc.com/id/01a0de2c-d401-716e-9757-135d0719d759)
- `geo:hasGeometry`:
  - [point of Roby Lake](https://ontology.bommaritollc.com/id/01a0ddff-0065-7239-bc1c-0554a9e3edfe)
  - [shape of Roby Lake](https://ontology.bommaritollc.com/id/01a0de2c-d401-716e-9757-135d0719d759)
- `geo:hasMetricArea`: 48783.1 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Big South Branch Pere Marquette River (HUC10 0406010104)](https://ontology.bommaritollc.com/id/01a0de92-1dab-7663-ab75-b6f88868e731)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-661202a4cecb)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-59dc-77ef-9db0-bee724a2bd6e)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-174b-755f-af1c-eb2266de9fc1)
- `schema:containedInPlace`:
  - [Lake County](https://ontology.bommaritollc.com/id/01a0ca47-5872-7215-a416-09517ba59c7c)
  - [Lake Township](https://ontology.bommaritollc.com/id/01a0ca47-7030-7313-8ef0-aa5937b2d393)
- `skos:altLabel`: Perch Lake
- `skos:prefLabel`: Roby Lake

## Elsewhere

- [Wikidata Q88277422](https://www.wikidata.org/wiki/Q88277422) (proposed match (exactMatch))
- [USGS GNIS 636066](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/636066) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=43.82737&mlon=-86.00831#map=14/43.82737/-86.00831) (43.82737, -86.00831)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=43.82737,-86.00831)
- [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/Q88277422 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-76f2-735d-9601-9e63fbb327fb)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-6613d5eed817.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-6613d5eed817.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-6613d5eed817.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-6613d5eed817)
Cite as: Roby Lake. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-c673-725f-9ee5-6613d5eed817
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.