Proof of concept.This is an unofficial demo built by Datopian from the City of Newton's public data. The official portal is newton-open-geo-data-newtonmagis.hub.arcgis.com. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from the City of Newton's ArcGIS Hub
Current portal

Certified Vernal Pools - Massachusetts

NHESP Certified Vernal Pools

Records
91
Formats
5
Last updated
Jun 13, 2025
Download CSVView on ArcGIS Hub

Download & API

Certified Vernal Pools - Massachusetts (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Certified Vernal Pools - Massachusetts (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Certified Vernal Pools - Massachusetts (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Certified Vernal Pools - Massachusetts (map tiles)pmtiles
Vector tiles — embed in a map
Download
Live ArcGIS layer (source)arcgis
Download

Rendered from PMTiles, queried in-browser from GeoParquet — no server. How this works

Schema

FieldTypeValues
CVP_NUMnumber7 to 8,957
CRITERIAstring6 values: Obligate Species (72), Obligate Species, Fairy Shrimp (7), Obligate Species, Facultative Species (6)…
CERTIFIEDdatetime