# Thompson Drain

Thompson Drain is a canal in [Fort Gratiot](https://ontology.bommaritollc.com/id/01a0ca47-6f6e-7690-b3fa-9c9cb41feb1b), [St. Clair County](https://ontology.bommaritollc.com/id/01a0ca47-5a01-72ff-8fe9-1447a694275e), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (3.3 km long), in the [Mill Creek-Frontal Lake Huron (HUC10 0408010402)](https://ontology.bommaritollc.com/id/01a0de92-1e77-7288-af19-a27ccf3790a4) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8374f481608e>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [St. Clair County](https://ontology.bommaritollc.com/id/01a0ca47-5a01-72ff-8fe9-1447a694275e) › [Fort Gratiot](https://ontology.bommaritollc.com/id/01a0ca47-6f6e-7690-b3fa-9c9cb41feb1b)

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

Location: 43.06170, -82.47103 (box -82.47743, 43.04476, -82.45823, 43.06266; west, south, east, north)

- `adms:identifier`: [gnis 1624983](https://ontology.bommaritollc.com/id/01a0ddfe-dc6e-7433-b306-b88d2d065ef2)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [shape of Thompson Drain](https://ontology.bommaritollc.com/id/01a0de2c-e1d3-702d-80fd-35f9c3a47a22)
- `geo:hasGeometry`:
  - [point of Thompson Drain](https://ontology.bommaritollc.com/id/01a0ddff-1ae4-706e-a6b0-2021c4e4568c)
  - [shape of Thompson Drain](https://ontology.bommaritollc.com/id/01a0de2c-e1d3-702d-80fd-35f9c3a47a22)
- `geo:hasMetricLength`: 3306.6 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Mill Creek-Frontal Lake Huron (HUC10 0408010402)](https://ontology.bommaritollc.com/id/01a0de92-1e77-7288-af19-a27ccf3790a4)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8373946274f1)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-6ad4-721f-94ba-70a6b4ba73c2)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-183f-711a-9dd5-9dcaa209b635)
- `schema:containedInPlace`:
  - [St. Clair County](https://ontology.bommaritollc.com/id/01a0ca47-5a01-72ff-8fe9-1447a694275e)
  - [Fort Gratiot](https://ontology.bommaritollc.com/id/01a0ca47-6f6e-7690-b3fa-9c9cb41feb1b)
- `skos:prefLabel`: Thompson Drain

## Elsewhere

- [Wikidata Q33217167](https://www.wikidata.org/wiki/Q33217167) (proposed match (exactMatch))
- [USGS GNIS 1624983](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/1624983) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=43.06170&mlon=-82.47103#map=14/43.06170/-82.47103) (43.06170, -82.47103)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=43.06170,-82.47103)
- [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/Q33217167 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-79e9-7690-9460-77f4157b28c3)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8374f481608e.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8374f481608e.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8374f481608e.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8374f481608e)
Cite as: Thompson Drain. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-dc6d-74cd-8c64-8374f481608e
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.