West Virginia

(State Scale, All Risk Indicators Report)

January 2025

Noteworthy Flood Risk Facts for West Virginia

Table 1. Noteworthy Flood Risk Facts: Below are the total statewide values for 26 flood risk indicators used in the risk index.

Risk Indicator	Description	More Info	Supplementary External Links
Floodplain Area	528,635 acres of high-risk floodplain.	Click for more information.	Floodplain Area by Region Floodplain Area by County Floodplain Area by Community Floodplain Area by Unincorporated Area Floodplain Area Report
Floodplain Area Ratio	3.4% of total community area lies within the Special Flood Hazard Area.	Click for more information.	Floodplain Area Ratio by Community Floodplain Area Ratio Report
Floodplain Length	17,205.1 miles of high-risk floodplain.	Click for more information.	Floodplain Length by County Floodplain Length by Community Floodplain Length by Region Floodplain Length by Unincorporated Area
Floodplain Length Ratio	0.00111 miles/acre of floodplain length in miles to total community area.	Click for more information.	Floodplain Length Ratio by Incorporated Place
Flood Declared Disasters	64 flood declared disasters since 1953.	Click for more information.	Federally-Declared Flood Disasters by County Federally-Declared Flood Disasters by County
Building Floodplain Count	82,408 buildings in a high-risk flood zone.	Click for more information.	Buildings in High-Risk Regulatory Zones Building Count in SFHA by Region Building Count in SFHA by County Building Count in SFHA by Community Building Count in SFHA by Unincorporated Area Building Count in SFHA by Incorporated Place Buildings in SFHA by Watershed Building Count in SFHA by River/Stream Building Counts Risk Indicator Report (all scales) Buildings in High-Risk Advisory Zones Building Count in SFHA by Region (Percent Rank Classification) Building Count in SFHA by County (Percent Rank Classification) Building Count in SFHA by Community (Percent Rank Classification) Building Count in SFHA by Unincorporated Area (Percent Rank Classification) Building Count in SFHA by Incorporated Place(Percent Rank Classification) Building Count in SFHA by Watershed (Percent Rank Classification) Building Count in SFHA by River/Stream (Percent Rank Classification) Highest Substantial Damage Estimates for Top Future buildings mapped out of SFHA Future buildings mapped in SFHA
Building Floodway Count	8,237 buildings in the regulatory floodway or main river channel.	Click for more information.	Floodway Building Count by County Floodway Building Count by Community Floodway Building Count by Watershed Floodway Building Count by River / Stream Building Count Density in Floodway Floodway Building Count by Region Floodway Building Count by County (Percent Rank Classification) Floodway Building Count by Community (Percent Rank Classification) Floodway Building Ratio by Unincorporated Area Floodway Building Ratio by Incorporated Place Floodway Building Count by Watershed (Percent Rank) Floodway Building Count by River / Stream (Percent Rank) Floodway Building Count by Region (Percent Rank Classification) Floodway Building Ratio by County Floodway Building Ratio by Community Floodway Building Count by Major Land Resource Area (MLRA) Floodway Building Ratio by Region
Building Floodplain Ratio	7.4% of floodplain buildings to total buildings.	Click for more information.	Floodplain Building Ratio by Region Floodplain Building Ratio by County Floodplain Building Ratio by Unincorporated Area Floodplain Building Ratio by Incorporated Place
Building Median Value	$38,200 median building value in floodplain.	Click for more information.	Building Exposure High Values >= $300K Building Exposure Low Values <= $10K by County Building Median Value by Community Building Median Value Residential by Community Building Exposure Low Values <= $10K by Community Building Exposure High Values Residential 1-4 Units >= $300K Building Exposure Low Values <= $10K Statwide Building Exposure High Values Non-Residential over $24M Building Exposure High Values Utilities over $15M
Bldg. Mobile Homes Ratio	27.5% of single-family dwellings in floodplain are manufactured homes.	Click for more information.	Mobile Homes Density Statewide Mobile Homes Ratio by County Mobile Homes Ratio by Community Mobile Homes Count by Community
Bldg. Subgrade Basements Ratio	24.8% of floodplain buildings have subgrade basements.	Click for more information.	Building Subgrade Basements Density Statewide Building Subgrade Basement Ratio by County Building Subgrade Basement Ratio by Community Building Subgrade Basement Ratio by County (Percent Rank) Building Subgrade Basement Ratio by Community (Percent Rank)
Building 1-Story Ratio	84.0% of floodplain buildings have only one story.	Click for more information.	Building One-Story Density Statewide Building One-Story Ratio by County Building One-Story Ratio by Community Building One-Story Ratio by County (Percent Rank) Building One-Story Ratio by Community (Percent Rank)
Bldg. Year Pre-FIRM Ratio	77.5% of floodplain buildings are Pre-FIRM or built with no FIRM in effect.	Click for more information.	Building Pre-FIRM Ratio Year Density Statewide Building Year Pre-FIRM Ratio by Region Building Year Pre-FIRM Ratio by County Building Year Pre-FIRM Ratio by Community Building Year Pre-FIRM Ratio by Unincorporated Area Building Year Pre-FIRM Ratio by Incorporated Place Building Year Pre-FIRM Ratio by Region (Percent Rank) Building Year Pre-FIRM Ratio by County (Percent Rank) Building Year Pre-FIRM Ratio by Community (Percent Rank) Building Year Pre-FIRM Ratio by Unincorporated Area (Percent Rank) Building Year Pre-FIRM Ratio by Incorporated Place (Percent Rank) Building Year Median Value by Community (Natural Break)
Essential Facilities	489 essential facilities in moderate and high risk floodplains.	Click for more information.	Essential Facilities Density Statewide Essential Facilities in High-Moderate Risk Floodplain by County
Community Assets Historical	2,758 historical assets in floodplain.	Click for more information.	Historical Community Assets Density Statewide Historical Community Assets Density Statewide Historical Community Assets Count by Community
Bldg. Substantial Damage Count	6,493 bldgs. substantially damaged by a 1% annual chance (100-yr) flood.	Click for more information.	Building Substantial Damage Estimates Density Statewide (1% Flood) Building Substantial Damage Count by Region (1% Flood) Building Substantial Damage Debris Removal Estimates by County (1% Flood) Building Substantial Damage Count by County (1% Flood) Building Substantial Damage Count by Community (1% Flood) (Percent Rank) Building Substantial Damage Count by Watershed (1% Flood) Building Substantial Damage Count by Stream (1% Flood) Building Substantial Damage Estimates Count Statewide by Occupancy Class (1% Flood) Building Substantial Damage Count by Region (1% Flood) (Percent Rank) Building Substantial Damage Count by County (1% Flood) (Percent Rank) Building Substantial Damage Count by 284 Communities (1% Flood) (Percent Rank) Building Substantial Damage Count by Watershed (1% Flood) (Percent Rank) Building Substantial Damage Count by Stream (1% Flood) (Percent Rank) Building Substantial Damage Estimates: Top 30 Structures over $496k (1% Flood) (Statewide) Building Substantial Damage Median Percent Damage Estimates by Community (1% Flood) Building Substantial Damage Estimates: Top 100 Streams (1% Flood) Building Substantial Damage Estimates: Top 125 Single Family (1% Flood) Structures more than $100K (statewide) Building Substantial Damage Median Damage Dollar Estimates by Community (1% Flood) Building Substantial Damage Debris Removal Estimates by Community (1% Flood)
Bldg. Substantial Damage Ratio	7.9% of buildings in floodplain substantially damaged by major storm.	Click for more information.	Building Substantial Damage to Total SFHA Structures Ratio by Region (1% Flood) Building Substantial Damage to Total SFHA Structures Ratio by County (1% Flood) Building Substantial Damage to Total SFHA Structures Ratio by Community (1% Flood) Building Substantial Damage to Total SFHA Structures Ratio by Watershed (1% Flood) (Percent Rank) Building Substantial Damage to Total SFHA Structures Ratio by Region (1% Flood) (Percent Rank) Building Substantial Damage to Total SFHA Structures Ratio by County (1% Flood) (Percent Rank) Building Substantial Damage to Total SFHA Structures Ratio by Community (1% Flood) (Percent Rank)
Bldg. Previous Damage Claims	27,882 buildings have prior damage claims.	Click for more information.	Building Damage Claims Number by County (Natural Break) Building Damage Claims Number by County (Percent Rank) Building Damage Claims Number by Community (Natural Break) Building Damage Claims Number by Community (Percent Break) Building Damage Claims Amount by Community (Natural Break)
Population in Floodplain Ratio	11.0% of the population resides in a high-risk flood zone.	Click for more information.	Population Ratio by County Population Ratio by Community Population Ratio by County (Percent Rank) Population Ratio by Community (Percent Rank)
Population Displaced Ratio	6.6% of population displaced by a 1% annual chance (100-yr) flood event.	Click for more information.	Population Displaced Density Statewide Population Estimated Requiring Short-Term Shelter by County (1% Flood) Population Estimated Requiring Short-Term Shelter by Community (1% Flood)

Risk Indicator data last updated August 2024