Rockland County steep-slope & wetlands.
Rockland County packs the Palisades cliffs, Hook Mountain, and the Ramapo range into New York's smallest mainland county. Buildable flat land is scarce and heavily developed, which pushes projects onto slopes — while the Torne Valley and Iona Island marshes carry the wetland overlays.
PARCEL DATA ✓Rockland County publishes tax-parcel boundaries, so you can zoom into the map, click any parcel — or several — and analyze it instantly. Searching by tax ID (SBL) or address works too.
WHAT YOU GET FOR ANY ROCKLAND COUNTY PARCEL
Steep-slope share
Percent of the parcel over any slope threshold you pick, from USGS 3DEP 1 m LiDAR (Horn 1981) — re-thresholdable live.
Wetland acreage
DEC-regulated, Army Corps / NWI, and informational freshwater wetlands measured inside the boundary.
PDF & CAD export
A clean report, or a georeferenced DXF/DWG with slope contours and wetlands on labeled layers.
NEARBY IN LOWER HUDSON VALLEY
Sources: USGS 3DEP elevation, NYS Tax Parcels, NYS DEC Environmental Resource Mapper. Results are planning-level estimates from public GIS data — not a survey, jurisdictional determination, or wetland delineation.