# 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-a139-56c7ad8dc10b>

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: 41.83560, -85.86361 (box -85.86361, 41.83560, -85.86361, 41.83560; west, south, east, north)

- `adms:identifier`: [gnis 631593](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56d066a43199)
- `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-ba6e164ca70b)
- `geo:hasGeometry`: [point of Marl Pit](https://ontology.bommaritollc.com/id/01a0ddfe-f569-7354-895f-ba6e164ca70b)
- **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-a139-56c610024fe6)
  - [evidence from https://3dhp.nationalmap.gov/arcgis/rest/services/usgs\_3dhp\_all/FeatureServer](https://ontology.bommaritollc.com/id/01a0de32-53cc-70cb-a68a-d56700c4354d)
  - [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 Q49338288](https://www.wikidata.org/wiki/Q49338288) (proposed match (exactMatch))
- [USGS GNIS 631593](https://edits.nationalmap.gov/apps/gaz-domestic/public/summary/631593) (gnis)
- [OpenStreetMap](https://www.openstreetmap.org/?mlat=41.83560&mlon=-85.86361#map=14/41.83560/-85.86361) (41.83560, -85.86361)
- [Google Maps](https://www.google.com/maps/search/?api=1&query=41.83560,-85.86361)
- [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/Q49338288 (proposed)](https://ontology.bommaritollc.com/id/01a0ddff-75fd-7593-86ad-367358579cac)

---
Also as: [Turtle](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56c7ad8dc10b.ttl), [JSON-LD](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56c7ad8dc10b.jsonld), [N-Triples](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56c7ad8dc10b.nt), [HTML](https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56c7ad8dc10b)
Cite as: Marl Pit. bc-ontology, release 0.1.0-rc15, 2026-09-28. https://ontology.bommaritollc.com/id/01a0ddfe-be5b-70f5-a139-56c7ad8dc10b
Release 0.1.0-rc15, graph hash 90961d0d6b29954f5f0257ebc2d1d12c6ce580def6a2f45cbf04d248aa879e72.