# Big Ditch

Big Ditch is a canal in [Riga Township](https://ontology.bommaritollc.com/id/01a0ca47-7984-744e-9e69-2c10d25bdc7f), [Lenawee County](https://ontology.bommaritollc.com/id/01a0ca47-5a45-7139-a14c-e06bafbc3a94), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa), in the [Ottawa River-Frontal Lake Erie (HUC10 0410000103)](https://ontology.bommaritollc.com/id/01a0de92-1ef9-72a0-8073-7071635ccedd) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e4aac0147b>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Lenawee County](https://ontology.bommaritollc.com/id/01a0ca47-5a45-7139-a14c-e06bafbc3a94) › [Riga Township](https://ontology.bommaritollc.com/id/01a0ca47-7984-744e-9e69-2c10d25bdc7f)

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

Location: 41.72338, -83.86911 (box -83.86911, 41.72338, -83.86911, 41.72338; west, south, east, north)

- `adms:identifier`: [gnis 621313](https://ontology.bommaritollc.com/id/01a0ddfe-abfd-761c-ba03-61277198a35f)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [point of Big Ditch](https://ontology.bommaritollc.com/id/01a0ddfe-e2c3-763b-8c24-738c3638078b)
- `geo:hasGeometry`: [point of Big Ditch](https://ontology.bommaritollc.com/id/01a0ddfe-e2c3-763b-8c24-738c3638078b)
- **in watershed** (`bcgeo:inWatershed`): [Ottawa River-Frontal Lake Erie (HUC10 0410000103)](https://ontology.bommaritollc.com/id/01a0de92-1ef9-72a0-8073-7071635ccedd)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e344bd426b)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-45fa-7425-9330-a5db5e636e61)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-18e7-7626-b367-30c68a8f2170)
- `schema:containedInPlace`:
  - [Lenawee County](https://ontology.bommaritollc.com/id/01a0ca47-5a45-7139-a14c-e06bafbc3a94)
  - [Riga Township](https://ontology.bommaritollc.com/id/01a0ca47-7984-744e-9e69-2c10d25bdc7f)
- `skos:prefLabel`: Big Ditch

## Elsewhere

- [Wikidata Q33177841](https://www.wikidata.org/wiki/Q33177841) (proposed match (exactMatch))
- [USGS GNIS 621313](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/621313) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=41.72338&mlon=-83.86911#map=14/41.72338/-83.86911) (41.72338, -83.86911)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=41.72338,-83.86911)
- [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/Q33177841 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7381-732c-9b00-b7f72c36ac8c)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e4aac0147b.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e4aac0147b.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e4aac0147b.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e4aac0147b)
Cite as: Big Ditch. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-abfc-76ce-9851-a5e4aac0147b
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.