Addison - Incorporated

County: Webster, WV PDC Region: 4

(Incorporated Place Scale, All Risk Indicators Report)

July 2025

Cumulative Flood Risk Score

65.7% Relatively High

Ranks 79th of 229 incorporated places in the state

1 of 25 risk indicators among the top 10% incorporated places.
5 of 25 risk indicators among the top 20% incorporated places.

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Noteworthy Flood Risk Facts for Addison - Incorporated

Table 1. Noteworthy Flood Risk Facts: A Cumulative Flood Risk Index of 25 flood factors reveals that Addison - Incorporated ranks 79th of 229 incorporated places in the state with a Cumulative Flood Risk Score of 65.7%. Below are all 25 flood risk indicators used in the risk index. Click on the More Info link for rationale and recommendations of each indicator.

Risk Indicator	Description	More Info	Supplementary External Links
Floodplain Area Ratio	56.4% 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 Ratio	0.00891 miles/acre of floodplain length in miles to total community area.	Click for more information.	Floodplain Length Ratio by Incorporated Place
Flood Declared Disasters	17 flood declared disasters since 1953.	Click for more information.
Flood Depth Median	1.7 feet median base flood depth.	Click for more information.	Media Flood Depth by Community (FEMA 1% Flood) Media Flood Depth by Incorporated Place (FEMA 1% Flood) Media Flood Depth by Community (FEMA 1% Flood) Percent Rank Classification Media Flood Depth by Incorporated Place (FEMA 1% Flood) Percent Rank Classification
Building Floodplain Count	103 buildings in a high-risk flood zone.	Click for more information.	Building Count in SFHA by Community Building Count in SFHA by Incorporated Place Building Count in SFHA by Community (Percent Rank Classification) Building Count in SFHA by Incorporated Place(Percent Rank Classification)
Building Floodway Count	22 buildings in the regulatory floodway or main river channel.	Click for more information.	Floodway Building Count by Community Floodway Building Count by Community (Percent Rank Classification) Floodway Building Ratio by Incorporated Place Floodway Building Ratio by Community
Building Floodplain Ratio	15.4% of floodplain buildings to total buildings.	Click for more information.	Floodplain Building Ratio by Incorporated Place
Building Density	0.60 buildings/acre density in floodplain.	Click for more information.	Building Density in SFHA by Community Building Density in SFHA by Incorporated Community
Building Median Value	$34,900 median building value in floodplain.	Click for more information.	Building Median Value by Community Building Median Value Residential by Community Building Exposure Low Values <= $10K by Community
Bldg. Mobile Homes Ratio	9.7% of single-family dwellings in floodplain are manufactured homes.	Click for more information.	Mobile Homes Ratio by Community Mobile Homes Count by Community
Bldg. Subgrade Basements Ratio	36.8% of floodplain buildings have subgrade basements.	Click for more information.	Building Subgrade Basement Ratio by Community Building Subgrade Basement Ratio by Community (Percent Rank)
Building 1-Story Ratio	78.9% of floodplain buildings have only one story.	Click for more information.	Building One-Story Ratio by Community Building One-Story Ratio by Community (Percent Rank)
Bldg. Year Pre-FIRM Ratio	94.0% of floodplain buildings are Pre-FIRM or built with no FIRM in effect.	Click for more information.	Building Year Pre-FIRM Ratio by Community Building Year Pre-FIRM Ratio by Incorporated Place Building Year Pre-FIRM Ratio by Community (Percent Rank) Building Year Pre-FIRM Ratio by Incorporated Place (Percent Rank) Building Year Median Value by Community (Natural Break)
Bldg. Year Minus Rated Post-FIRM Ratio	1.0% of floodplain buildings are Post-FIRM with lowest floor below BFE.	Click for more information.	Building Year Post-FIRM Minus-Rated Building Ratio by Community Building Year Post-FIRM Minus-Rated Building Ratio by Incorporated Place Building Year Post-FIRM Minus-Rated Building Ratio by Community (Percent Rank) Building Year Post-FIRM Minus-Rated Building Ratio by Incorporated Place (Percent Rank) Building Year Post-FIRM Building Ratio by Community
Essential Facilities	4 essential facilities in moderate and high risk floodplains.	Click for more information.
Roads Inundated Ratio	17.1% of roads flooded by a 1% annual chance (100-yr) major flood.	Click for more information.	Roads Inundated Ratio for 1% Flood by Community Roads Inundated Ratio for 1% Flood by Incorporated Place
Community Assets Historical	0 historical assets in floodplain.	Click for more information.	Historical Community Assets Count by Community
Community Assets Non-Historical	3 non-historical assets in floodplain.	Click for more information.
Bldg. Substantial Damage Count	0 bldgs. substantially damaged by a 1% annual chance (100-yr) flood.	Click for more information.	Building Substantial Damage Count by Community (1% Flood) (Percent Rank) Building Substantial Damage Count by 284 Communities (1% Flood) (Percent Rank) Building Substantial Damage Median Percent Damage Estimates by Community (1% Flood) 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	0.0% of buildings in floodplain substantially damaged by major storm.	Click for more information.	Building Substantial Damage to Total SFHA Structures Ratio by Community (1% Flood) Building Substantial Damage to Total SFHA Structures Ratio by Community (1% Flood) (Percent Rank)
Bldg. Previous Damage Claims	41 buildings have prior damage claims.	Click for more information.	Building Damage Claims Number by Community (Natural Break) Building Damage Claims Number by Community (Percent Break) Building Damage Claims Amount by Community (Natural Break)
Bldg. Repetitive Loss Structures	0 repetitive loss structures.	Click for more information.	Building Repetitive Loss Structures by Community
Population in Floodplain Ratio	20.2% of the population resides in a high-risk flood zone.	Click for more information.	Population Ratio by Community Population Ratio by Community (Percent Rank)
Population Displaced Ratio	10.5% of population displaced by a 1% annual chance (100-yr) flood event.	Click for more information.	Population Estimated Requiring Short-Term Shelter by Community (1% Flood)
WV Social Vulnerability Index	54.2% index score of WV Social Vulnerability.	Click for more information.	Social Vulnerability Index (SVI) by Community (Percent Rank) Social Vulnerability Index (SVI) by Incorporated Place (Percent Rank) Population Change between Censuses 2010 and 2020 by Community
Cumulative Index	65.7% cumulative risk index score.	Click for more information.	Cumulative Risk Index by Community Cumulative Risk Index by Incorporated Place

Flood Risk Index Scores for Addison - Incorporated

Table 2. Flood Risk Index Scores: A Cumulative Flood Risk Index of 25 flood factors reveals that Addison - Incorporated ranks 79th of 229 incorporated places in the state with a Cumulative Flood Risk Score of 65.7%. Below are all 25 flood risk indicators used in the risk index with the indicator scores and rankings.

Category	Flood Risk Indicator	Value for Addison - Incorporated	Indicator Score (0 - 100%)	Indicator Rating
Floodplain Characteristics	Floodplain Area Ratio Click for more information.	56.4%	99.1%	VERY HIGH
	Floodplain Length Ratio Click for more information.	0.00891 Miles/Acre	86.8%	Very High
	Flood Declared Disasters Click for more information.	17	49.5%	Moderate
	Flood Depth Median Click for more information.	1.7 Ft	51.3%	Moderate
	Floodplain Characteristics Index, 34th		85.5%	Very High
Building Exposure	Building Floodplain Count Click for more information.	103	72.8%	Relatively High
	Building Floodway Count Click for more information.	22	85.5%	Very High
	Building Floodplain Ratio Click for more information.	15.4%	66.6%	Relatively High
	Building Density Click for more information.	0.60 /Acre	50.0%	Moderate
	Building Exposure Index, 56th		75.8%	Relatively High
Building Characteristics	Building Median Value Click for more information.	$34,900	48.2%	Moderate
	Bldg. Mobile Homes Ratio Click for more information.	9.7%	51.3%	Moderate
	Bldg. Subgrade Basements Ratio Click for more information.	36.8%	76.3%	Relatively High
	Building 1-Story Ratio Click for more information.	78.9%	56.1%	Moderate
	Bldg. Year Pre-FIRM Ratio Click for more information.	94.0%	85.5%	Very High
	Bldg. Year Minus Rated Post-FIRM Ratio Click for more information.	1.0%	48.2%	Moderate
	Building Characteristics Index, 73rd		68.4%	Relatively High
Critical Infrastructure	Essential Facilities Click for more information.	4	88.5%	Very High
	Roads Inundated Ratio Click for more information.	17.1%	72.3%	Relatively High
	Critical Infrastructure Index, 20th		91.6%	VERY HIGH
Community Assets	Community Assets Historical Click for more information.	0	0.0%	Very Low
	Community Assets Non-Historical Click for more information.	3	63.1%	Relatively High
	Community Assets Index, 86th		57.4%	Moderate
Building Damage Loss	Bldg. Substantial Damage Count Click for more information.	0	0.0%	Very Low
	Bldg. Substantial Damage Ratio Click for more information.	0.0%	0.0%	Very Low
	Bldg. Previous Damage Claims Click for more information.	41	72.3%	Relatively High
	Bldg. Repetitive Loss Structures Click for more information.	0	0.0%	Very Low
	Building Damage Loss Index, 158th		31.1%	Relatively Low
People / Social Vulnerabilities	Population in Floodplain Ratio Click for more information.	20.2%	66.6%	Relatively High
	Population Displaced Ratio Click for more information.	10.5%	63.5%	Relatively High
	WV Social Vulnerability Index Click for more information.	-	54.2%	Moderate
	People / Social Vulnerabilities Index, 77th		66.6%	Relatively High
Risk Index	Cumulative Index Click for more information.		65.7%	Relatively High

Risk Index Legend

VERY HIGH: 90% - 100%

Very High: 80% - 100%

Relatively High: 60% - 79.9%

Moderate: 40% - 59.9%

Relatively Low: 20% - 39.9%

Very Low: 0% - 19.9%

Flood Risk Indicators of Addison - Incorporated Compared to Other Incorporated Places

Table 3. Flood Risk Index Comparison: Flood risk indicator values for Addison - Incorporated compared to descriptive statistics of all incorporated places.

Category	Flood Risk Indicator	Value for Addison - Incorporated	Median Value	Mean Value	Min Value	Max Value	State Stats
Floodplain Characteristics	Floodplain Area Ratio Click for more information.	56.4%	16.3%	18.3%	1.2%	79.4%	3.4%
	Floodplain Length Ratio Click for more information.	0.00891 Miles/Acre	0.00518 Miles/Acre	0.00593 Miles/Acre	0.0006 Miles/Acre	0.02235 Miles/Acre	0.00111 Miles/Acre
	Flood Declared Disasters Click for more information.	17	17	17	9	28	64
	Flood Depth Median Click for more information.	1.7 Ft	1.8 Ft	2.4 Ft	0.0 Ft	26.4 Ft	1.8 Ft

Building Exposure	Building Floodplain Count Click for more information.	103	58	140	11	2,685	82,408
	Building Floodway Count Click for more information.	22	2	14	0	189	8,237
	Building Floodplain Ratio Click for more information.	15.4%	11.3%	15.5%	0.2%	63.1%	7.4%
	Building Density Click for more information.	0.60 /Acre	0.75 /Acre	0.93 /Acre	0.07 /Acre	4.53 /Acre	0.16 /Acre

Building Characteristics	Building Median Value Click for more information.	$34,900	$41,500	$48,417	$12,800	$213,800	$38,200
	Bldg. Mobile Homes Ratio Click for more information.	9.7%	13.6%	18.1%	0.0%	100.0%	27.5%
	Bldg. Subgrade Basements Ratio Click for more information.	36.8%	25.5%	28.5%	0.0%	90.3%	24.8%
	Building 1-Story Ratio Click for more information.	78.9%	80.4%	75.3%	0.0%	100.0%	84.0%
	Bldg. Year Pre-FIRM Ratio Click for more information.	94.0%	86.6%	82.1%	5.9%	100.0%	77.5%
	Bldg. Year Minus Rated Post-FIRM Ratio Click for more information.	1.0%	2.4%	4.8%	0.0%	39.9%	5.8%

Critical Infrastructure	Essential Facilities Click for more information.	4	1	2	0	20	489
	Roads Inundated Ratio Click for more information.	17.1%	13.1%	15.8%	0.0%	66.7%	6.7%

Community Assets	Community Assets Historical Click for more information.	0	0	14	0	1,259	2,758
	Community Assets Non-Historical Click for more information.	3	2	4	0	55	2,092

Building Damage Loss	Bldg. Substantial Damage Count Click for more information.	0	1	7	0	125	6,493
	Bldg. Substantial Damage Ratio Click for more information.	0.0%	0.9%	5.9%	0.0%	77.4%	7.9%
	Bldg. Previous Damage Claims Click for more information.	41	18	71	0	2,873	27,882
	Bldg. Repetitive Loss Structures Click for more information.	0	5	27	0	1,574	9,698

People / Social Vulnerabilities	Population in Floodplain Ratio Click for more information.	20.2%	15.9%	23.3%	0.1%	100.0%	11.0%
	Population Displaced Ratio Click for more information.	10.5%	8.0%	16.1%	0.0%	100.0%	6.6%
	WV Social Vulnerability Index Click for more information.	54.2%	53.7%	53.1%	0.0%	100.0%	-

General Information Statistics for Addison - Incorporated

Table 4. General Information and comparison statistics for Addison - Incorporated.

	Total Area (ACRES)	Total Structures	Total Population	Population Density (/SQ MILE)	Number of Households	Average Household Size

Addison - Incorporated	303	670	1,299	2,743.8	436	3.0

STATE STATS	15,500,454	1,118,761	1,801,049	74.4	711,352	2.5
INCORPORATED PLACES STATS:
Median	559	559	940	1,073.6	354	2.5
Mean	1,297	1,475	2,763	1,240.3	1,142	2.6
Minimum	34 (Sylvester - Inc)	28 (Thurmond - Inc)	4 (Thurmond - Inc)	44.1 (Thurmond - Inc)	4 (Thurmond - Inc)	1.0 (Thurmond - Inc)
Maximum	20,648 (Charleston - Inc)	28,045 (Charleston - Inc)	49,055 (Charleston - Inc)	3,895.7 (Windsor Heights - Inc)	21,779 (Charleston - Inc)	4.7 (Pullman - Inc)

Risk Indicator data last updated August 2024