I had to make a leaflet map for a work project with sensitive data, and as the backdrop I used the following layers:
- https://njogis-newjersey.opendata.arcgis.com/datasets/newjersey::municipal-boundaries-of-nj-hosted-3857/explore?location=40.130043%2C-74.749168%2C0.00
- https://njogis-newjersey.opendata.arcgis.com/datasets/newjersey::county-boundaries-of-nj-hosted-3857
- I pulled this resource, which is just 1 polygon feature: https://services1.arcgis.com/QWdNfRs7lkPq4g4Q/arcgis/rest/services/ConservationZone/FeatureServer/0
- click “query” at the bottom
- put 1=1 in the “where” field
- I put GEOJSON as the format in the dropdown
- query (get)
- save the output as a geojson file (I copied into a text file and changed the extension)
- https://gisdata-njdep.opendata.arcgis.com/datasets/njdep::watershed-management-areas-in-new-jersey/about