# Roberts Ditch

Roberts 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-c668-76c6-b7a1-15fff2c57f05>

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: 41.73561, -83.80383 (box -83.80383, 41.73561, -83.80383, 41.73561; west, south, east, north)

- `adms:identifier`: [gnis 636039](https://ontology.bommaritollc.com/id/01a0ddfe-c669-7119-a0ca-992bcdafc648)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [point of Roberts Ditch](https://ontology.bommaritollc.com/id/01a0ddff-005f-717d-92fd-a3aadbd202a5)
- `geo:hasGeometry`: [point of Roberts Ditch](https://ontology.bommaritollc.com/id/01a0ddff-005f-717d-92fd-a3aadbd202a5)
- **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-c668-76c6-b7a1-15feb0c31979)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-59d6-70fb-9b85-8d1374b64046)
  - [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`: Roberts Ditch

## Elsewhere

- [Wikidata Q33211730](https://www.wikidata.org/wiki/Q33211730) (proposed match (exactMatch))
- [USGS GNIS 636039](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/636039) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=41.73561&mlon=-83.80383#map=14/41.73561/-83.80383) (41.73561, -83.80383)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=41.73561,-83.80383)
- [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/Q33211730 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-76f2-735d-9601-9e4fb2a024de)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-c668-76c6-b7a1-15fff2c57f05.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-c668-76c6-b7a1-15fff2c57f05.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-c668-76c6-b7a1-15fff2c57f05.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-c668-76c6-b7a1-15fff2c57f05)
Cite as: Roberts Ditch. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-c668-76c6-b7a1-15fff2c57f05
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.