Data sources and methods

See what StayReady uses and how

Explore the official public map layers, guidance, and local plans used by StayReady, an independent educational tool. Each entry explains what the source supports, where it applies, and what still needs review.

26registered sources
8mapped data sources
7guidance sources
15jurisdictions covered
How to read this page

Official source does not mean every integration is final

StayReady separates the authority of a source from the review status of its use in the product. A source-link review date confirms that the cited page was checked; it is not the dataset's publication or effective date.

Mapped hazard data
Used for address-level layer checks or geographic context.
Preparedness guidance
Used for actions, definitions, and regional information.
Integration under review
The source is official, but StayReady's extraction or local copy is still provisional.
Verify directly

Open the official tools

Use these agency pages for current source information, official map viewers, and notices.

FEMA flood viewer CAL FIRE severity zones CGS EQ Zapp USGS earthquake program
Source registry

Browse data and guidance

Search by agency, hazard, place, or source name.

Mapped hazard data Official source; integration under review

Federal Emergency Management Agency

National Flood Hazard Layer

Flood
Geographic scope
United States, including Alameda County
How StayReady uses it
Address-point flood-zone check and map context.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

The local snapshot is provisional pending named human verification against the official FEMA viewer. The app checks the saved address point against the loaded polygon layer; this is not a parcel determination.

Source type: Gis Polygon Layer

Open official source
Mapped hazard data Official source; integration under review

CAL FIRE

Fire Hazard Severity Zones

Wildfire
Geographic scope
California, including Alameda County
How StayReady uses it
Address point wildfire-zone check and map display.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

The local snapshot is provisional pending named human verification against the official CAL FIRE viewer. A point match is scoped only to the loaded Fire Hazard Severity Zone polygons and does not determine building safety or capture smoke, evacuation, ember, road, or power-shutoff impacts.

Source type: Gis Polygon Layer

Open official source
Mapped hazard data Official source; integration under review

United States Geological Survey

Fault and earthquake information

Earthquake
Geographic scope
United States, including Bay Area context
How StayReady uses it
Mapped fault proximity check, map display, and live-earthquake context.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

The local fault snapshot is provisional pending named human verification. Approximate address proximity is contextual only and does not determine regulatory zone membership, shaking, liquefaction, landslide, building damage, exposure, or safety.

Source type: Gis And Live Data

Open official source
Mapped hazard data Official source; integration under review

California Geological Survey

CGS Alquist-Priolo Earthquake Fault Zones

Earthquake
Geographic scope
California, including mapped Alameda County areas
How StayReady uses it
Address-point check for mapped surface fault rupture regulatory zones.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

Provisional until human verification against the official CGS regulatory maps viewer. This is surface fault rupture zone evidence, not a general earthquake-risk or shaking-damage determination.

Source type: Official Gis

Open official source
Mapped hazard data Official source; integration under review

California Department of Water Resources, Division of Safety of Dams

DSOD Approved Dam Inundation Boundaries

Dam Failure
Geographic scope
California, with address checks limited to Alameda County
How StayReady uses it
Address-point intersection and map display for published hypothetical dam-failure inundation scenarios.
Source link reviewed
June 15, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

Official mapped planning data, not a prediction. No address-level conclusions are drawn from LHMP or EOP screenshots. Actual evacuation instructions come from local emergency officials.

Source type: Official Gis

Open official source
Mapped hazard data Official source; integration under review

California Geological Survey

CGS Liquefaction Zones

Earthquake
Geographic scope
California, including mapped Alameda County areas
How StayReady uses it
Address-point check for mapped liquefaction regulatory zones.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

Provisional until human verification against the official CGS regulatory maps viewer. A match does not guarantee liquefaction; a non-match is not proof against ground failure.

Source type: Official Gis

Open official source
Mapped hazard data Official source; integration under review

California Geological Survey

CGS Earthquake-Induced Landslide Zones

Earthquake Landslide
Geographic scope
California, including mapped Alameda County areas
How StayReady uses it
Address-point check for mapped earthquake-induced landslide regulatory zones.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

Provisional until human verification against the official CGS regulatory maps viewer. This is not a general landslide forecast.

Source type: Official Gis

Open official source
Mapped hazard data Official source; integration under review

California Geological Survey

California Tsunami Hazard Areas

Tsunami
Geographic scope
Mapped California coastal communities, including Alameda County shoreline areas
How StayReady uses it
Address-point check for mapped tsunami evacuation and response-planning areas.
Source link reviewed
June 12, 2026
Review status and limitations

Official source; integration under review. The source is official. StayReady's extraction or map integration remains provisional.

Provisional until human verification against the official CGS tsunami viewer. This is planning evidence, not a live warning, legal disclosure, or all-coastal-flooding determination.

Source type: Official Map

Open official source
Preparedness guidance Reviewed official guidance

Alameda County

Alameda County Emergency Site

Wildfire Flood Earthquake All
Geographic scope
Alameda County
How StayReady uses it
Countywide preparedness and source transparency.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

Countywide official emergency resource used for general preparedness guidance.

Source type: Official Guidance

Open official source
Preparedness guidance Reviewed official guidance

City of Berkeley

Fire Weather and Evacuation

Wildfire
Geographic scope
Berkeley
How StayReady uses it
Berkeley wildfire evacuation and fire-weather guidance, especially for hills and Fire Zone context.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

Official Berkeley page says residents in the Berkeley Hills should leave before a fire starts when the Fire Department declares Extreme Fire Weather, and all residents should use emergency alerts and evacuation planning.

Source type: Official Guidance

Open official source
Preparedness guidance Reviewed official guidance

Ready.gov

Build A Kit

Wildfire Flood Earthquake All
Geographic scope
United States
How StayReady uses it
Preparedness action guidance.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

General emergency kit guidance.

Source type: Official Guidance

Open official source
Preparedness guidance Reviewed official guidance

Ready.gov

Make A Plan

Wildfire Flood Earthquake All
Geographic scope
United States
How StayReady uses it
Household planning guidance.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

General household emergency planning guidance.

Source type: Official Guidance

Open official source
Preparedness guidance Reviewed official guidance

Ready.gov

Floods

Flood
Geographic scope
United States
How StayReady uses it
Flood preparedness and response wording.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

Used for flood action guidance.

Source type: Official Guidance

Open official source
Preparedness guidance Reviewed official guidance

Ready.gov

Earthquakes

Earthquake
Geographic scope
United States
How StayReady uses it
Earthquake preparedness wording.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

Used for earthquake action guidance.

Source type: Official Guidance

Open official source
Preparedness guidance Reviewed official guidance

Ready.gov

Recovering from Disaster

Wildfire Flood Earthquake All
Geographic scope
United States
How StayReady uses it
Recovery readiness questions and limitations.
Source link reviewed
June 4, 2026
Review status and limitations

Reviewed official guidance. StayReady reviewed this official source for the guidance described here.

Used to include recovery planning in StayReady preparedness guidance.

Source type: Official Guidance

Open official source
Local context

Local plan coverage

Shared regional plans appear once with all covered jurisdictions. Plan context does not replace an address-level map check.

11 plan groups
City of Oakland 2021-2026 Local Hazard Mitigation Plan Oakland Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireDroughtLandslideSea Level RiseSevere WeatherTsunamiDam Failure

Coverage notes

Existing app dataset is derived from Oakland LHMP-style content; source should be expanded with direct page citations before making stronger claims.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
City of Berkeley 2024 Local Hazard Mitigation Plan Berkeley Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireLandslideSevere WeatherTsunamiExtreme HeatUtility DisruptionSea Level RiseHigh WindPoor Air QualityDrought

Coverage notes

Official city LHMP page and user-provided 2024 PDF confirm these hazards are in scope; city-specific hazard claims should use reviewed chunks or clearly labeled plan context.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
2024 Tri-City Multi-jurisdictional Local Hazard Mitigation Plan Fremont, Newark, Union City Official source; integration under review

Hazards in plan scope

EarthquakeFloodLandslideSea Level RiseSevere WeatherTsunamiWildfire

Coverage notes

FEMA-approved Tri-City plan covers Fremont, Newark, Union City, Alameda County Water District, and Union Sanitary District.

Covered by the Tri-City plan; claims should remain plan-level until annex chunks are reviewed.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Climate Adaptation and Hazard Mitigation Plan Alameda Official source; integration under review

Hazards in plan scope

FloodSea Level RiseEarthquakeSevere WeatherTsunamiDam FailureExtreme HeatPoor Air QualityDrought

Coverage notes

Official city plan page confirmed; use reviewed chunks before making specific exposure claims.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Hayward Local Resilience Plan Hayward Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireLandslideSea Level RiseSevere Weather

Coverage notes

Official Hayward LRP page confirmed; source chunks should be expanded from the plan PDF.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Tri-Valley Local Hazard Mitigation Plan Dublin, Livermore, Pleasanton Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireSevere WeatherLandslideDam FailureDrought

Coverage notes

Tri-Valley plan covers Dublin, Livermore, Pleasanton, and Dublin San Ramon Services District.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Albany Hazard Mitigation Albany Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireSevere Weather

Coverage notes

Official Fire Department page confirms Albany's LHMP addresses earthquakes, wildfires, flooding, and other emergencies; detailed plan PDF extraction is still needed.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
2025-2030 Local Hazard Mitigation Plan Emeryville Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireSevere Weather

Coverage notes

Official LHMP page confirmed; detailed 91MB plan extraction is still needed before stronger city-specific claims.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Draft Local Hazard Mitigation Plan Piedmont Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireSevere Weather

Coverage notes

Official draft LHMP page confirmed; page identifies earthquake, wildfire, and severe weather examples. A 2025 LHMP meeting handout provides limited flood context; full draft PDF extraction is still needed.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Environmental Hazards Element Update San Leandro Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireLandslideSea Level RiseSevere Weather

Coverage notes

Official hazard element source confirmed; not a full LHMP record. Use as hazard context, especially evacuation, climate, and wildfire planning.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source
Alameda County hazard mitigation planning context Unincorporated Alameda County Official source; integration under review

Hazards in plan scope

EarthquakeFloodWildfireSevere Weather

Coverage notes

County mitigation source confirmed for countywide context; community-specific unincorporated claims still need reviewed chunks.

The source is official. StayReady's extraction or map integration remains provisional.

Open plan source