Proof of concept.This is an unofficial demo built by Datopian from the City of Evanston's public data. The official portal is data.cityofevanston.org. Questions or feedback: hello@datopian.com

A PortalJS proof of concept · data from the City of Evanston's ArcGIS Hub

Water bodies

This layer shows bodies of water in and around the City of Evanston. The chief among these is Lake Michigan to the east with 4.25 miles of shoreline. The data also includes 3 miles of the North Shore Channel, the 14.2 acre Northwestern Lagoon, and various other ponds.

Records
8
Formats
5
Last updated
Jul 3, 2025

Download & API

Water bodies (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Download
Water bodies (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Download
Water bodies (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Download
Water bodies (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
NAMEstring7 values: ETHS Nature Center Pond (2), Arrington Lagoon (1), Lake Michigan (1)…