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

Surface Water

Surface Waters - Newton, Massachusetts. This data layer contains ponds and the Charles River in and around Newton. Previously in support of regional mapping, Newton maintained two separate surface water layers; one originally from Boston Edison and one from MassGIS. The first layer was clipped to the Newton city boundary while the second showed features in surrounding towns. The two layers did not line up well and created odd looking boundaries in the middle of the Charles River. To fix this problem the MassGIS polygons were adopted and a [DISPLAY] field was added to allow the user to show features only within Newton if desired.

Records
314
Formats
5
Last updated
May 30, 2025

Download & API

Surface Water (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Surface Water (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Surface Water (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Surface Water (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
DISPLAYinteger0 to 4
TYPEinteger1 to 3
NAMEstring