# Marl Pit

Marl Pit is a basin in [Porter Township](https://ontology.bommaritollc.com/id/01a0ca47-78ff-7657-84c4-b16833abea64), [Cass County](https://ontology.bommaritollc.com/id/01a0ca47-5a46-7564-a1ca-981ba967c897), [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa), in the [Mill Creek-Saint Joseph River (HUC10 0405000113)](https://ontology.bommaritollc.com/id/01a0de92-1d26-758e-8855-6bb736f20a10) watershed.

IRI: <https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d2f9c6794d>

Within: [Michigan](https://ontology.bommaritollc.com/id/01a0ca47-57ff-7219-9e2f-cdc1b39bd0fa) › [Cass County](https://ontology.bommaritollc.com/id/01a0ca47-5a46-7564-a1ca-981ba967c897) › [Porter Township](https://ontology.bommaritollc.com/id/01a0ca47-78ff-7657-84c4-b16833abea64)

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

Location: 41.85283, -85.86333 (box -85.86333, 41.85283, -85.86333, 41.85283; west, south, east, north)

- `adms:identifier`: [gnis 631594](https://ontology.bommaritollc.com/id/01a0ddfe-be5c-7076-b26f-04f602cd2c06)
- `dcterms:type`: [basin](https://ontology.bommaritollc.com/vocab/geo/gnisBasin)
- `geo:hasDefaultGeometry`: [point of Marl Pit](https://ontology.bommaritollc.com/id/01a0ddfe-f569-7354-895f-ba749327db96)
- `geo:hasGeometry`: [point of Marl Pit](https://ontology.bommaritollc.com/id/01a0ddfe-f569-7354-895f-ba749327db96)
- **in watershed** (`bcgeo:inWatershed`): [Mill Creek-Saint Joseph River (HUC10 0405000113)](https://ontology.bommaritollc.com/id/01a0de92-1d26-758e-8855-6bb736f20a10)
- `prov:wasDerivedFrom`:
  - [evidence from https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/DomesticNames/DomesticNames\_MI\_Text.zip](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d18040c87e)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-53cc-70cb-a68a-d56aa1c5d384)
  - [evidence from https://hydro.nationalmap.gov/arcgis/rest/services/wbd/MapServer](https://ontology.bommaritollc.com/id/01a0de92-169f-745d-a1a8-73ae56aa9f60)
- `schema:containedInPlace`:
  - [Cass County](https://ontology.bommaritollc.com/id/01a0ca47-5a46-7564-a1ca-981ba967c897)
  - [Porter Township](https://ontology.bommaritollc.com/id/01a0ca47-78ff-7657-84c4-b16833abea64)
- `skos:prefLabel`: Marl Pit

## Elsewhere

- [Wikidata Q49338290](https://www.wikidata.org/wiki/Q49338290) (proposed match (exactMatch))
- [USGS GNIS 631594](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/631594) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=41.85283&mlon=-85.86333#map=14/41.85283/-85.86333) (41.85283, -85.86333)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=41.85283,-85.86333)
- [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/Q49338290 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-75fd-7593-86ad-3675c6a90668)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d2f9c6794d.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d2f9c6794d.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d2f9c6794d.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d2f9c6794d)
Cite as: Marl Pit. bc-ontology, release 0.1.0-rc12, 2026-09-27. https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d2f9c6794d
Release 0.1.0-rc12, graph hash a20f66b983549f220c6f061b7e40233771a06aa47a0c0aede95a2a57ee2e9553.