# Block Drain

Block Drain is a canal in [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) (2.8 km long), in the [Cass River (HUC10 0408020503)](https://ontology.bommaritollc.com/id/01a0de92-1eb9-710b-8a84-b149458add3c) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b47075001b>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa)

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

Location: 43.30447, -83.70357 (box -83.72253, 43.30381, -83.69296, 43.30674; west, south, east, north)

- `adms:identifier`: [gnis 621597](https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37bd7966eb17)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [shape of Block Drain](https://ontology.bommaritollc.com/id/01a0de2c-c513-738f-a18d-8feeefab8d53)
- `geo:hasGeometry`:
  - [point of Block Drain](https://ontology.bommaritollc.com/id/01a0ddfe-e30b-70cf-b220-04ec4db99c68)
  - [shape of Block Drain](https://ontology.bommaritollc.com/id/01a0de2c-c513-738f-a18d-8feeefab8d53)
- `geo:hasMetricLength`: 2824.7 (xsd:double)
- **in watershed** (`bcgeo:inWatershed`): [Cass River (HUC10 0408020503)](https://ontology.bommaritollc.com/id/01a0de92-1eb9-710b-8a84-b149458add3c)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b31cd36486)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-465c-7711-a9da-bb281e4cc327)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-188f-7304-9980-4a593721bb15)
- `schema:containedInPlace`:
  - [Tuscola County](https://ontology.bommaritollc.com/id/01a0ca47-5952-7651-8dce-d12b8ac1963f)
  - [Saginaw County](https://ontology.bommaritollc.com/id/01a0ca47-5952-7651-8dce-d142472a7091)
  - [Arbela Township](https://ontology.bommaritollc.com/id/01a0ca47-6b60-7261-827b-3844093c0a19)
  - [Birch Run Township](https://ontology.bommaritollc.com/id/01a0ca47-6c0d-74d2-8ff2-5e1a83173095)
- `skos:prefLabel`: Block Drain

## Elsewhere

- [Wikidata Q33178050](https://www.wikidata.org/wiki/Q33178050) (proposed match (exactMatch))
- [USGS GNIS 621597](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/621597) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=43.30447&mlon=-83.70357#map=14/43.30447/-83.70357) (43.30447, -83.70357)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=43.30447,-83.70357)
- [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/Q33178050 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-738a-76ce-91da-04fc3c9bc1b0)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b47075001b.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b47075001b.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b47075001b.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b47075001b)
Cite as: Block Drain. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-ac91-76a0-b825-37b47075001b
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.