Novarly Parcel · Bronx
Is Riverdale sinking?
What satellite radar actually measures across Riverdale — and what it means for your address.
-0.86 mm/yr
median ground motion
-3.53 mm/yr
fastest-sinking spot
0.2%
of measured spots moving ≥3 mm/yr
Across 512 measured locations in and around Riverdale, the median ground motion is -0.86 mm/yr (negative = sinking). The fastest-moving measured spot is subsiding at -3.53 mm/yr, and 0.2% of measured locations exceed the 3 mm/yr "notable" threshold. Rates vary block by block — check your exact address:
Screening only — not a structural guarantee. For any decision, consult a licensed geotechnical engineer.
More in Bronx:
Statistics computed from Ohenhen (2025) NYC–Long Island vertical land motion (Zenodo doi:10.5281/zenodo.17644691, CC-BY-4.0). Screening only — see methodology.