# Sylvester Lake

Sylvester Lake is a lake in [Green Township](https://ontology.bommaritollc.com/id/01a0ca47-70c8-71d8-b4a4-53123225b099), [Alpena County](https://ontology.bommaritollc.com/id/01a0ca47-5ba1-75cb-ad10-803f5773865d), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (0.2 ha), in the [Upper South Branch Thunder Bay River (HUC10 0407000602)](https://ontology.bommaritollc.com/id/01a0de92-1e31-76f9-b717-19e817378970) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4813a49cf08a>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Alpena County](https://ontology.bommaritollc.com/id/01a0ca47-5ba1-75cb-ad10-803f5773865d) › [Green Township](https://ontology.bommaritollc.com/id/01a0ca47-70c8-71d8-b4a4-53123225b099)

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

Location: 45.03620, -83.81273 (box -83.81303, 45.03605, -83.81236, 45.03637; west, south, east, north)

- `adms:identifier`: [gnis 2100226](https://ontology.bommaritollc.com/id/01a0ddfe-dcfe-7786-b123-e42a0d8b2d0b)
- `dcterms:type`: [lake](https://ontology.bommaritollc.com/vocab/geo/gnisLake)
- `geo:hasDefaultGeometry`: [shape of Sylvester Lake](https://ontology.bommaritollc.com/id/01a0de2c-e213-7252-92f6-d54be761f95b)
- `geo:hasGeometry`:
  - [point of Sylvester Lake](https://ontology.bommaritollc.com/id/01a0ddff-1b42-7592-8464-b2ccae982996)
  - [shape of Sylvester Lake](https://ontology.bommaritollc.com/id/01a0de2c-e213-7252-92f6-d54be761f95b)
- `geo:hasMetricArea`: 1703.5 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Upper South Branch Thunder Bay River (HUC10 0407000602)](https://ontology.bommaritollc.com/id/01a0de92-1e31-76f9-b717-19e817378970)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4812dedbb269)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-6b2d-7043-9571-ddb65eef26f2)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-17eb-71d7-b6bb-031729a70601)
- `schema:containedInPlace`:
  - [Alpena County](https://ontology.bommaritollc.com/id/01a0ca47-5ba1-75cb-ad10-803f5773865d)
  - [Green Township](https://ontology.bommaritollc.com/id/01a0ca47-70c8-71d8-b4a4-53123225b099)
- `skos:prefLabel`: Sylvester Lake

## Elsewhere

- [Wikidata Q88279209](https://www.wikidata.org/wiki/Q88279209) (proposed match (exactMatch))
- [USGS GNIS 2100226](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/2100226) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=45.03620&mlon=-83.81273#map=14/45.03620/-83.81273) (45.03620, -83.81273)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=45.03620,-83.81273)
- [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/Q88279209 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7a03-7444-8577-3710af1379f6)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4813a49cf08a.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4813a49cf08a.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4813a49cf08a.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4813a49cf08a)
Cite as: Sylvester Lake. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-dcfd-7236-b303-4813a49cf08a
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.