West Virginia Flood Hazard Profile
Hazard Data · Model Version 2.5
Overview
West Virginia's flood hazard is driven by terrain rather than coastline. Steep slopes and narrow valleys concentrate runoff quickly, so headwater streams rise faster than in flatter states and flash flooding is the dominant mode. Landslides and mudslides accompany flooding often enough that FEMA names them in the same declarations. OpenFEMA records 36 flood-related federal declarations for West Virginia between 1954 and 2026 — one of the highest counts of any interior state, in the state with the smallest emergency management budgets in the region.
In the Historical Record
Counted from the records this platform holds. A figure is shown only where the underlying dataset could be read.
County by County in West Virginia
What federal records show has happened in each county: storms, disaster declarations and flood insurance claims. The counties below have the longest NOAA storm records in West Virginia.
Notable Historical Events
Hazard Scoring Approach
Calchis computes a Calchis Hazard Score (0–10) for flood hazard at any US address. The score is composed of weighted sub-components derived from federal data sources and published research. All score components are transparent and returned in API responses.
These are hazard scores — physical intensity likelihood only. They do not include property exposure or vulnerability data. We never call a hazard score a risk score. See the full methodology for scoring details.
Analyze Your Address
Enter any West Virginia address to see location-specific flood hazard scoring with full methodology transparency.
Open Live Map — West VirginiaData Sources
Related
Monitoring flood exposure in West Virginia?
This page is a state-level profile. Calchis scores individual addresses, tracks live flood events against your own locations, and alerts you when one approaches them.
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Calchis Hazard Score — derived from federal and academic sources listed above. Property exposure data not included. Not a substitute for professional actuarial assessment. Decision-support intelligence — not a primary alerting or dispatch system. Verify against official sources.