# Markham Drain

Markham Drain is a canal in [Elmwood Township](https://ontology.bommaritollc.com/id/01a0ca47-6e9d-7715-ae01-a2d39aa19f27), [Tuscola County](https://ontology.bommaritollc.com/id/01a0ca47-5952-7651-8dce-d12b8ac1963f), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (5.1 km long), in the [Sebewaing River-Frontal Lake Huron (HUC10 0408010301)](https://ontology.bommaritollc.com/id/01a0de92-1e6a-773a-9f33-1d21e1a7ea24) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23e695b039e>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Tuscola County](https://ontology.bommaritollc.com/id/01a0ca47-5952-7651-8dce-d12b8ac1963f) › [Elmwood Township](https://ontology.bommaritollc.com/id/01a0ca47-6e9d-7715-ae01-a2d39aa19f27)

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

Location: 43.61807, -83.27773 (box -83.29760, 43.60821, -83.26005, 43.63525; west, south, east, north)

- `adms:identifier`: [gnis 631580](https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e24725e7390b)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [shape of Markham Drain](https://ontology.bommaritollc.com/id/01a0de2c-cf42-7384-bec3-30c70624edad)
- `geo:hasGeometry`:
  - [point of Markham Drain](https://ontology.bommaritollc.com/id/01a0ddfe-f564-750c-ac02-631bf90ff403)
  - [shape of Markham Drain](https://ontology.bommaritollc.com/id/01a0de2c-cf42-7384-bec3-30c70624edad)
- `geo:hasMetricLength`: 5063.9 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Sebewaing River-Frontal Lake Huron (HUC10 0408010301)](https://ontology.bommaritollc.com/id/01a0de92-1e6a-773a-9f33-1d21e1a7ea24)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23dbfb15cb0)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-53c6-76cc-8b3a-dff2a00b1d29)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-182e-7716-9d74-ca76033e3abf)
- `schema:containedInPlace`:
  - [Tuscola County](https://ontology.bommaritollc.com/id/01a0ca47-5952-7651-8dce-d12b8ac1963f)
  - [Elmwood Township](https://ontology.bommaritollc.com/id/01a0ca47-6e9d-7715-ae01-a2d39aa19f27)
- `skos:prefLabel`: Markham Drain

## Elsewhere

- [Wikidata Q33205179](https://www.wikidata.org/wiki/Q33205179) (proposed match (exactMatch))
- [USGS GNIS 631580](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/631580) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=43.61807&mlon=-83.27773#map=14/43.61807/-83.27773) (43.61807, -83.27773)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=43.61807,-83.27773)
- [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/Q33205179 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-75fc-7770-863c-6c0e7baa6b71)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23e695b039e.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23e695b039e.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23e695b039e.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23e695b039e)
Cite as: Markham Drain. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-be53-722d-8d7e-e23e695b039e
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.