Onondaga County steep-slope & wetlands.
Onondaga County pairs Syracuse's drumlin-studded lake plain with the abrupt valley walls south of the city — the Tully Valley and the hills above Skaneateles Lake carry serious grade. Cicero Swamp and the Seneca River corridor put large DEC-mapped wetland blocks across the northern towns.
PARCEL DATA ✓Onondaga 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 ONONDAGA 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 CENTRAL NEW YORK & MOHAWK 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.