NYC bare-earth elevation contours — nyc_terrain_contours

Contour lines derived from the 100-foot bare-earth Digital Elevation Model. Useful as a lightweight elevation overlay for ggplot2 maps. EPSG:2263, NAD83 / New York Long Island (ftUS).

Usage

nyc_terrain_contours_sf

Format

`nyc_terrain_contours_sf`

A simple feature collection of multilinestrings:

elev_ft: Contour level, in feet above sea level (NAVD88).
geometry: MULTILINESTRING geometry in EPSG:2263.

Source

City of New York, 1-foot Digital Elevation Model (DEM): https://data.cityofnewyork.us/City-Government/1-foot-Digital-Elevation-Model-DEM-/dpc8-z3jc

Details

Contours are computed from the 100-foot mean-aggregated DEM via terra::as.contour() at 50 evenly spaced levels covering the city's elevation range. For higher-resolution work, derive your own contours from nyc_terrain_50ft.

Author

Kieran Healy