# Simpkins Drain

Simpkins Drain is a canal in [Greenleaf Township](https://ontology.bommaritollc.com/id/01a0ca47-70d4-75b7-9f3f-e2fee99fe1a9), [Sanilac County](https://ontology.bommaritollc.com/id/01a0ca47-5953-7311-ac48-68da826dd41b), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (1.7 km long), in the [South Branch Cass River (HUC10 0408020501)](https://ontology.bommaritollc.com/id/01a0de92-1eb4-700b-8d2b-c7ca7c0acb03) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbcaa7b1d4ca>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Sanilac County](https://ontology.bommaritollc.com/id/01a0ca47-5953-7311-ac48-68da826dd41b) › [Greenleaf Township](https://ontology.bommaritollc.com/id/01a0ca47-70d4-75b7-9f3f-e2fee99fe1a9)

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

Location: 43.63779, -83.01133 (box -83.02197, 43.63473, -83.00651, 43.64130; west, south, east, north)

- `adms:identifier`: [gnis 637984](https://ontology.bommaritollc.com/id/01a0ddfe-c90f-7478-876f-0f948d94e5ac)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [shape of Simpkins Drain](https://ontology.bommaritollc.com/id/01a0de2c-d58c-72ab-bbea-9238a5a7d99a)
- `geo:hasGeometry`:
  - [point of Simpkins Drain](https://ontology.bommaritollc.com/id/01a0ddff-033f-7243-a390-18a5c57631f8)
  - [shape of Simpkins Drain](https://ontology.bommaritollc.com/id/01a0de2c-d58c-72ab-bbea-9238a5a7d99a)
- `geo:hasMetricLength`: 1666.2 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [South Branch Cass River (HUC10 0408020501)](https://ontology.bommaritollc.com/id/01a0de92-1eb4-700b-8d2b-c7ca7c0acb03)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbc9d084329a)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-5c1e-727b-94c6-597a1c01f576)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-188a-720c-b522-6531344110d8)
- `schema:containedInPlace`:
  - [Sanilac County](https://ontology.bommaritollc.com/id/01a0ca47-5953-7311-ac48-68da826dd41b)
  - [Greenleaf Township](https://ontology.bommaritollc.com/id/01a0ca47-70d4-75b7-9f3f-e2fee99fe1a9)
- `skos:prefLabel`: Simpkins Drain

## Elsewhere

- [Wikidata Q33214240](https://www.wikidata.org/wiki/Q33214240) (proposed match (exactMatch))
- [USGS GNIS 637984](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/637984) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=43.63779&mlon=-83.01133#map=14/43.63779/-83.01133) (43.63779, -83.01133)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=43.63779,-83.01133)
- [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/Q33214240 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7715-7252-8695-6d57b0b33faf)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbcaa7b1d4ca.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbcaa7b1d4ca.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbcaa7b1d4ca.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbcaa7b1d4ca)
Cite as: Simpkins Drain. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-c90e-774c-879c-cbcaa7b1d4ca
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.