Floodplains
Floodplains in Newton, Massachusetts. The floodplains support Newton's Floodplain Ordinance of 2010. The ordinance defines floodways as the 100 year floodplain as defined in FEMA's Flood Insurance Rate (FIRM) Maps. These correspond to Zone AE on those maps. In addition, the oridinance lists most streams, not studied on the FIRM's by name and established as 30 foot corridor or buffer around each one.
- Records
- 53
- Formats
- 5
- Last updated
- Jun 13, 2025
Download & API
Floodplains (CSV)csv
Spreadsheet — attributes, with coordinates for point layers
Floodplains (GeoJSON)geojson
GeoJSON — for web maps and GIS tools
Floodplains (GeoParquet)geoparquet
Columnar — query with DuckDB / SQL
Floodplains (map tiles)pmtiles
Vector tiles — embed in a map
Live ArcGIS layer (source)arcgis
Rendered from PMTiles, queried in-browser from GeoParquet — no server. How this works
Schema
| Field | Type | Values |
|---|---|---|
| Name | string | |
| Type | string | 5 values: 30 Ft Stream Buffer (28), Pond Associated Wetland (12), Isolated Wetland (9)… |
| OrdinanceCat | integer | 1 to 4 |
| OrdSection | string | |
| BoundarySource | string | 3 values: 30 Ft Buffer (28), LiDAR (19), Combo (6) |
| Display | integer |