GeoScreen SoCal

What we screen

Active fault proximity

GeoScreen checks whether a parcel falls inside a state-designated Alquist-Priolo Earthquake Fault Zone and reports its proximity to mapped active faults. The screening tells you what the California Geological Survey fault data shows for that location, with the data source cited, so you know whether fault rupture is a factor to investigate further.

Hazard snapshot

Each report includes an interactive map of the screened parcel.

Active fault proximity

Near mapped zone

This parcel is near a Alquist-Priolo Earthquake Fault Zone.

The parcel footprint does not intersect the Alquist-Priolo Earthquake Fault Zone, but the nearest mapped feature (Sample Mapped Zone) is about 142 m away. Proximity is reported as a map fact only.

Source: Sample Source Agency — https://example.gov/sample-dataset. Map effective 2024-01-15. Screened 2026-06-09.

What this report is — and is not

This report is a preliminary, automated screening that checks a Southern California address against public agency hazard maps and surfaces where those maps overlap or sit near the parcel. It is intended to help prioritize further due diligence. It is not a site-specific investigation, not an insurability or value determination, and not a substitute for professional review. Each finding cites the dataset checked and how current it was.

This is NOT a Natural Hazard Disclosure (NHD) report.