# Acker Extension Drain

Acker Extension Drain is a canal in [Tekonsha Township](https://ontology.bommaritollc.com/id/01a0ca47-7b1f-714e-83c1-864a73f72375), [Calhoun County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f41dde71a12f), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa), in the [Nottawa Creek (HUC10 0405000103)](https://ontology.bommaritollc.com/id/01a0de92-1d0f-77b3-bca1-443306f9d5ff) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cb50d18ba4>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Calhoun County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f41dde71a12f) › [Tekonsha Township](https://ontology.bommaritollc.com/id/01a0ca47-7b1f-714e-83c1-864a73f72375)

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

Location: 42.14028, -85.03694 (box -85.03694, 42.14028, -85.03694, 42.14028; west, south, east, north)

- `adms:identifier`: [gnis 2109280](https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0d430357e2c)
- `dcterms:type`: [canal](https://ontology.bommaritollc.com/vocab/geo/gnisCanal)
- `geo:hasDefaultGeometry`: [point of Acker Extension Drain](https://ontology.bommaritollc.com/id/01a0ddff-1b90-70c8-b1f3-54a530d81627)
- `geo:hasGeometry`: [point of Acker Extension Drain](https://ontology.bommaritollc.com/id/01a0ddff-1b90-70c8-b1f3-54a530d81627)
- **in watershed** (`bcgeo:inWatershed`): [Nottawa Creek (HUC10 0405000103)](https://ontology.bommaritollc.com/id/01a0de92-1d0f-77b3-bca1-443306f9d5ff)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cae2d1ab42)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-6b7e-724d-8136-451f8db3460c)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-1682-7570-b2f6-8920da3c6410)
- `schema:containedInPlace`:
  - [Calhoun County](https://ontology.bommaritollc.com/id/01a0ca47-5a15-72c0-b651-f41dde71a12f)
  - [Tekonsha Township](https://ontology.bommaritollc.com/id/01a0ca47-7b1f-714e-83c1-864a73f72375)
- `skos:prefLabel`: Acker Extension Drain

## Elsewhere

- [Wikidata Q33176839](https://www.wikidata.org/wiki/Q33176839) (proposed match (exactMatch))
- [USGS GNIS 2109280](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/2109280) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=42.14028&mlon=-85.03694#map=14/42.14028/-85.03694) (42.14028, -85.03694)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=42.14028,-85.03694)
- [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/Q33176839 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-7a0d-768b-ac2a-76edbc7308e7)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cb50d18ba4.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cb50d18ba4.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cb50d18ba4.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cb50d18ba4)
Cite as: Acker Extension Drain. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-ddd3-774a-9ab3-c0cb50d18ba4
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.