Manassas, VA Flood Factor® Report

Manassas city

Manassas

Virginia

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This property has no specified land use zoning according to Risk Factor&#8217;s records. 
Risk Factor™ is not intended for commercial use. If you are interested in purchasing data on this property, you can get more information on bulk data purchases <a href="https://firststreet.org/data-access/">here</a> or sign up to be notified when Risk Factor Pro launches and individual property reports for non-residential properties become available. For personal or informational uses, please click &#8220;Show property information&#8221; below.
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Risk Factor™ makes it even easier to find your risk of flooding with new and improved experience. Find past floods, current risks, and future projections based on peer-reviewed research from the world’s leading flood modelers and learn about your other environmental risks. You can now understand your risk from wildfires, extreme heat, and extreme winds!
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Flood Factor Redirect

This property has been identified as a non-residential or mixed use property.
Risk Factor™ is not intended for commercial use. If you are interested in purchasing data on this property, you can get more information on bulk data purchases <a href="https://firststreet.org/data-access/">here</a> or sign up to be notified when Risk Factor Pro™ launches which will allow you to access this property&#8217;s risk information.
Note this classification comes from county records and other providers and may still be in progress of being updated in newly developed residential areas.
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Non-residential

This property has been identified as having shared information with other addresses. 
To best understand what area is included in the analysis, you can view where the pin is located on the maps below. If the pin is on a building, the risk is related to that building. If the pin is not on a building, the risk is related to the point where the pin is located.
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The data for this location is not available or under review based on new and improved data related to its (peril) risk. It will be available in a future Risk Factor™ release. Learn more on the <a href="https://help.riskfactor.com/hc/en-us">Help Center</a> or <a href="https://mailchi.mp/riskfactor/signup">sign up to be notified</a> about future releases.
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The data for this location is not available or under review based on new and improved data related to its risk. It will be available in a future Risk Factor™ release. Learn more on the <a href="https://help.riskfactor.com/hc/en-us">Help Center</a> or <a href="https://mailchi.mp/riskfactor/signup">sign up to be notified</a> about future releases.
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commercial properties [tooltip name="flood-localitycommercial" content="" /]

In addition to damage on properties, flooding can also cut off access to utilities, emergency services, transportation, and may impact the overall economic well-being of an area. Overall, Manassas has a moderate risk of flooding over the next 30 years, which means flooding is likely to impact day-to-day life within the community. This is based on the level of risk the properties face rather than the proportion of properties with risk.

infrastructure facilities [tooltip name="flood-localityinfrastructure" content="" /]

homes [tooltip name="flood-localityresidential" content="" /]

miles of roads [tooltip name="flood-localityroads" content="" /]

There are 1,007 properties in [tooltip name="general-locationtype" content="Manassas" /] that have greater than a 26% chance of being severely affected by flooding over the next 30 years. This represents 13% of all properties in Manassas.

social facilities [tooltip name="flood-localitysocial" content="" /]

Manassas Flood Risk [tooltip name="flood-communityoverall" content="" /]

Communities that adapt to higher risks can limit damage and lower flood insurance costs. Manassas is already investing in flood risk reduction projects, but more may be needed. <a href="https://riskfactor.com/solutions/flood">Learn more about solutions.</a>

Known adaptation measures [tooltip name="flood-adaptationcount" content="" /]

Properties protected by adaptation [tooltip name="flood-adaptationprotected" content="" /]

Lowering flood risk starts with higher standards. Some places plan to a higher standard (a &#8220;500 year&#8221; standard) that lowers the number of properties at severe risk. Protecting homes to this level would reduce the risk to the 1,007 severely affected properties.

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Note: 3 properties in this area are protected by an <a href="https://help.riskfactor.com/hc/en-us/articles/360051062333-Adaptation-types">adaptation</a>. While the above projections take into account this reduction, risks may substantially increase in the event of failure.

Deeper floods from major events, like hurricanes, are less likely to occur, but affect more properties than more shallow flood events, like heavy rains. As Manassas feels the effects of a changing environment, however, events of all kinds will affect more properties within the community.
If a low-likelihood storm resulting in severe flooding (a [tooltip name="flood-eventdefinition" content="1-in-100 year flood event" /]), occurred today, it could affect 995 properties in Manassas. This type of event has a 26% chance of occurring at least once over the life of a 30 year mortgage. 30 years from now, an event of this same likelihood would affect 1,016 properties due to a changing environment.

Today [tooltip name="flood-propertiesriskcountthisyear" content="" /]

In 30 years [tooltip name="flood-propertiesriskcount30y" content="" /]

Note: 3 properties in this area are protected by an <a href="https://help.riskfactor.com/hc/en-us/articles/360051062333">adaptation</a>.

Risk Factor™ has no [tooltip name="flood-recreatedmodel" content="recreated models" /] of flooding events near Manassas, but that doesn&#8217;t mean this area has never flooded in the past.
<a href="https://help.riskfactor.com/hc/en-us/articles/360050783973" target="_blank" rel="noopener">Learn more about historic flood events.</a>

Depth of flooding (ft.) [tooltip name="flood-historiclocalitycount" content="" /]

Properties impacted in Manassas[tooltip name="flood-historicoverall" content="" /]

A changing environment means higher seas, new weather patterns, and stronger storms. As the atmosphere warms, there is more evaporation and more water available when it rains. A warmer atmosphere also means warmer oceans, which can intensify flooding from hurricanes and offshore storms. Sea level rise also increases coastal flood risks, as higher seas mean there’s more water available when high tides and coastal storms cause flooding.
Learn more about the environmental factors increasing flood risk <a class="underline text-floodfactor-500 hover:text-floodfactor-300" href="https://riskfactor.com/environmental-changes/flood">here</a>.

Individuals, mayors, governors, and Congress can work together to build protections before flooding, build back stronger after flooding, and create plans that future-proof communities.

Explore more solutions <a class="underline text-floodfactor-500 hover:text-floodfactor-300" href="https://riskfactor.com/solutions/flood#personalsolutions">here</a>.

In addition to the flooding risk described above, Manassas has minor risk from wildfires, moderate risk from severe winds, and severe risk from heat. To learn more details about Manassas’s risk and solutions visit this area’s Risk Factor pages below.

Flood-AAL

The Average Annual Loss is the percent of the structure value that is impacted based on the full risk profile (a depth times likelihood integration). You can multiply it by the property value of a given structure to get a proxy for the $ value of damage from the flood risk profile in any given year.

Fire-WUI-5

WUI, or Wildlife Urban Interface, is a special designation given to residential areas by the USDA Forest Service. Homes in a designated WUI are required to meet certain compliance standards for wildfire prevention.

Fire-WUI

Fire-DamageEstimate

This denotes if the property is likely to sustain damage and associated repair costs based on its building characteristics and vulnerability to nearby wildfires in the current year. You can edit building characteristics and see damage scenarios on the fire damages page.

Fire-Maps-flamesTitle

Likelihood of wildfire flames to reach this property.

Heat-FeelsLikeTemp

&#8220;Feels like&#8221; temperature is another word for &#8220;heat index&#8221; which is the result of combining air temperature with humidity to describe how heat feels due to the moisture content in the air. This is an important measure of temperature because this felt experience of heat is an important indicator of our bodies&#8217; ability to cool itself and stay safe on hot days.

Heat-HotDayDefined

A hot day is defined by using the 98th percentile &#8220;feels like&#8221; temperature in a specified area, or in other words the lowest daily high temperature on the hottest 7 days in a given year. Learn more about hot days <a class='underline text-heatfactor-500 hover:text-heatfactor-300' href="https://help.riskfactor.com/hc/en-us/articles/7947907047063" rel="noopener" target="_blank">here</a>.

otis-test

general-locationtype

Manassas
 is a city in Virginia.

Wind-DowntimeDays

The number of days to repair a building from wind damage could be a large range in the case of high-speed events. This is due to the fact that if your property was hit by a major hurricane, and the entire region will be recovering, which will make acquiring labor, supplies, etc much harder. Some properties may receive repairs more quickly than others.

Wind-1in2Defined

This type of event has a likelihood of occurring once every 2 years and typically will see lower wind speeds than a less likely event.

Wind-1in1500Defined

This type of event has a likelihood of occurring once every 1500 years and has the capability to bring higher wind speeds than a more likely event.

Wind-1in750Defined

This type of event has a likelihood of occurring once every 750 years and has the capability to bring higher wind speeds than a more likely event.

Wind-1in300Defined

This type of event has a likelihood of occurring once every 300 years and has the capability to bring higher wind speeds than a more likely event.

RoofMaterial

The construction material used for the roof of your building.

OverallDetails-BuildingFaceDirection

The wind damage varies based on the predominant angle between the oncoming wind and the orientation of your building and rooftop.

Wind-PropertyDetailsTitle

Details about the property that are used to calculate damages related to the risk from wind.

Wind-LocalityOverallRisk

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;All properties have some exposure to wind risk. Community wind risk is based on the level of risk to these properties, not the proportion of these properties at risk. &quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">All properties have some exposure to wind risk. Community wind risk is based on the level of risk to these properties, not the proportion of these properties at risk.

Wind-1in5Defined

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This type of event has a likelihood of occurring once every 5 years and typically will see lower wind speeds than a less likely event.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">This type of event has a likelihood of occurring once every 5 years and typically will see lower wind speeds than a less likely event.

Wind-1in20Defined

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This type of event has a likelihood of occurring once every 20 years and typically will see lower wind speeds than a less likely event.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">This type of event has a likelihood of occurring once every 20 years and typically will see lower wind speeds than a less likely event.

Wind-1in100Defined

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This type of event has a likelihood of occurring once every 100 years and has the capability to bring higher wind speeds than a more likely event.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">This type of event has a likelihood of occurring once every 100 years and has the capability to bring higher wind speeds than a more likely event.

Wind-1in500Defined

This type of event has a likelihood of occurring once every 500 years and has the capability to bring higher wind speeds than a more likely event.

Wind-CommunityOverall

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Overall wind risk measures the threat high winds pose to the community relative to other communities throughout the U.S. Learn more about how scores are determined.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">Overall wind risk measures the threat high winds pose to the community relative to other communities throughout the U.S. Learn more about how scores are determined.

Wind-HistoricCycloneAffected

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;The total number of buildings in the county affected by the historic event. Historic event information comes from the National Oceanic and Atmospheric Administration (NOAA).&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">The total number of buildings in the county affected by the historic event. Historic event information comes from the National Oceanic and Atmospheric Administration (NOAA).

Wind-HistoricEventsMapped

Note hurricanes prior to 2004 and severe thunderstorms do not have historic maps available but are included in total event count. Maps are currently limited to the most recent 100. This limit will be removed in a future update to provide all available historic maps.

Wind-HistoricEvents

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Historic events come from the National Oceanic and Atmospheric Administration (NOAA). It includes tornadoes and severe wind events from 1955-2022 and hurricanes and tropical storms from 1851-2022. \nNote that map visuals are not available for severe thunderstorms or for hurricanes prior to 2004.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">Historic events come from the National Oceanic and Atmospheric Administration (NOAA). It includes tornadoes and severe wind events from 1955-2022 and hurricanes and tropical storms from 1851-2022. 
Note that map visuals are not available for severe thunderstorms or for hurricanes prior to 2004.

Wind-HistoricTornadoLoss

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Historic event loss information comes from the National Oceanic and Atmospheric Administration (NOAA). It includes tornadoes and severe wind events from 1955-2022&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">Historic event loss information comes from the National Oceanic and Atmospheric Administration (NOAA). It includes tornadoes and severe wind events from 1955-2022

Wind-HistoricTornadoCategory

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Historic event information comes from the National Oceanic and Atmospheric Administration (NOAA). The Fujita Scale (F Scale) -The F Scale was developed based on damage intensity and not wind speed; 3-second wind speed ranges given are estimated, based on the extent of observed damage.\nThe Enhanced Fujita Scale (EF Scale) - The EF Scale was revised from the original Fujita Scale. The EF scale still is a set of 3-second wind gust estimates (not measurements) based on damage.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">Historic event information comes from the National Oceanic and Atmospheric Administration (NOAA). The Fujita Scale (F Scale) -The F Scale was developed based on damage intensity and not wind speed; 3-second wind speed ranges given are estimated, based on the extent of observed damage. 
The Enhanced Fujita Scale (EF Scale) &#8211; The EF Scale was revised from the original Fujita Scale. The EF scale still is a set of 3-second wind gust estimates (not measurements) based on damage.

Wind-HistoricCycloneSpeed

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Historic event wind speed information comes from the National Oceanic and Atmospheric Administration (NOAA). It includes hurricanes and tropical storms from 1851-2022. &quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">Historic event wind speed information comes from the National Oceanic and Atmospheric Administration (NOAA). It includes hurricanes and tropical storms from 1851-2022.

Wind-WindGustDirection

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;The predominant direction that strong wind gusts reach the property.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">The predominant direction that strong wind gusts reach the property.

Wind-DamageEstimate

This denotes if the property is likely to sustain damage and associated repair costs based on its building characteristics and vulnerability to the high wind speeds it could incur. You can edit building characteristics and see damage scenarios on the wind damages page.

Wind-Direction

OverallDetails-BuildingHeight

The number of stories of the building on this property.

Wind-WindAccumulates

Wind risk accumulates over time, so a property with a 0.03% chance of high wind event this year would have a 1% chance of high wind event at least once within 30 years.

Wind-1minSustainedWind

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;The intensity of a tropical cyclone or hurricane is typically measured by its 1-minute sustained wind speed. While they are measured in this way, damages can often occur by stronger shorter wind gusts.&quot;}" data-sheets-userformat="{&quot;2&quot;:13185,&quot;3&quot;:{&quot;1&quot;:0},&quot;10&quot;:2,&quot;11&quot;:4,&quot;12&quot;:0,&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:8}">The intensity of a tropical cyclone or hurricane is typically measured by its 1-minute sustained wind speed. While they are measured in this way, damages can often occur by stronger shorter wind gusts.

Wind-3secWindGusts

3-second wind gusts are what can most often cause damage to buildings and are generally 1.28 times faster than a 1-min sustained wind speed.

Wind-1in3000Defined

This type of event has a likelihood of occurring once every 3,000 years and has the capability to bring higher wind speeds than a more likely event.

Wind-TropicalStormCumulative

This chart shows this property&#8217;s likelihood of being in a tropical storm event with 3-second wind gusts exceeding 50 mph (39 mph for 1-min sustained winds) over the next 30 years. Risk from higher wind gust speeds or less likely windstorm events can be found in the report below.

Wind-WindFactor

A property&#8217;s Wind Factor indicates its comprehensive risk from high winds over the next 30 years, ranging from 1 (minimal) to 10 (extreme). This score is taking into account risk from hurricane events, tornadoes, tropical storms, and severe wind events. Properties with higher Wind Factors are more likely to experience high winds.

accountCredits

Credits can be used to unlock Pro property reports at no cost.
All Pro subscribers get 1 credit at sign up. More credits can be added with a Credit Promo Code.

Heat-CoolingDaysRounding

This is the number of days per year estimated to required cooling based on the &#8220;desired cooling temp&#8221; above. The totals may vary slightly from the chart due to rounding.

Fire-FireFactorVideo

A property&#8217;s Fire Factor indicates its cumulative wildfire risk, ranging from 1 (minimal) to 10 (extreme). Properties with higher Fire Factors are more likely to be in a wildfire during the next 30 years.

Flood Factor Fundaments thumbnail-1

Flood-RecreatedModel

Risk Factor&#8217;s historic data is based on recreated models of flood events and not on recorded levels of flooding. While there may be some slight discrepancies from observed events this methodology meets statistical standards for accuracy and has been validated accordingly. <a href="https://help.riskfactor.com/hc/en-us/articles/360050783973-How-were-historic-floods-recreated-for-Flood-Factor-" rel="noopener" target="_blank">Learn more</a>.

Flood-SliderExplained

Homes with severe flood risk or with 30 year flood risk that is the same as current flood risk may not see any change on the flood projections map.

Fire-EmberCast

Wildfires produce large pieces of burning debris known as embers, which can be carried several miles from an active wildfire by wind and smoke. When flying embers land on a burnable material such as dried fuels or possibly even in a building, it causes fire to spread through a process known as spotting. Ember risk should be considered by owners of at-risk properties and precautionary measures should be taken to further reduce susceptibility.

Fire-MaxFlameLength

The maximum estimated height, or length, of flames at this location based on all fire scenarios where fire reached the largest building on this property.

Fire-AverageFlameLength

The average estimated height, or length, of flames at this location based on all fire scenarios where fire reached the largest building on this property.

Fire-Maps-EmberCast

Fire-SliderExplainedNonresidential

Buildings with 30 year wildfire risk that is the same as current wildfire risk may not see any change on the wildfire risk probability map.

Fire-propertyDetails-defensibleSpace5ft

If there is no vegetation or flammable materials within 5 ft of the building, and the proportion of vegetation or flammable materials within 50 ft of the building is less than 15% then it is low risk.

Flood-DamageEstimate

The estimated cost of all potential flood damages, based on this property&#8217;s flood projections. <a href="https://help.floodfactor.com/hc/en-us/articles/1500002966002-How-are-flood-damage-estimates-and-Flood-Factor-scores-related-">Learn more.</a>

Heat-EnergyUseChange

The estimated change in energy use is based on the change in days required cooling.

Overview-OverallPropertyDetails

Property details can be adjusted within the Pro experience by going to any of the &#8220;Damages&#8221; pages. Adjusting property details will not change the property&#8217;s risk from environmental impacts, as that is based on the property&#8217;s location, but it could impact the damage consequences associated with that risk.

Fire-CompleteDestruction

This shows the likelihood of the structure being completely destroyed if wildfire were to reach it. This takes into account the height of the flame length and the property and building characteristics such as the defensible space and fire proofing upgrades.

Flood-FEMAZone

Federal Emergency Management Agency (FEMA) flood maps are primarily used to determine flood insurance requirements and do not determine a property&#8217;s Flood Factor. It is estimated that this property is in FEMA Zone . <a href="https://help.riskfactor.com/hc/en-us/articles/360048256493-Understand-the-differences-between-FEMA-flood-zones">Learn more about zone differences. </a>

fire-consequences-likelihood

The chance of being destroyed or reached by wildfire this year.

Flood-FloodFactorVideo

A property&#8217;s Flood Factor indicates its comprehensive flood risk, ranging from 1 (minimal) to 10 (extreme). Properties with higher Flood Factors are either more likely to flood, more likely to experience high floods, or both.

Flood Factor Fundaments thumbnail

Heat-MaxMonthlyTemp

This is the average high &#8220;feels like&#8221; temperature in the hottest month of the year in this area.

Fire-Maps-flameMaxTitle

This is the maximum expected flame length of a wildfire if one were to reach this property. Another way to think about this is a worst case scenario.

Fire-Maps-flameDescription

A hotter wildfire will have higher flames and reach more of the building, making it more likely to cause damage, while a low-burning fire is less likely to be as destructive.

Fire-Maps-flameAvgTitle

This is the average expected flame length of a wildfire if one were to reach this property.

Fire-Maps-embersTitle

Likelihood of embers from a nearby wildfire to reach this property.

Fire-Maps-likelihoodDescription

Risk Factor Pro aggregates how risks are accumulating and changing over time, which means even very small chances of wildfire occurring in a given year can add up to a bigger chance over time.

Fire-Maps-likelihoodStat

Read about the fire model methodology behind Risk Factor <a href="https://riskfactor.com/methodology/fire" rel="noopener" target="_blank">here</a>.

Fire-Maps-likelihoodTitle

Likelihood of wildfire flames or wildfire ember to reach this property.

Flood-MapsVeryRegularEvent

This type of event has a likelihood of occurring once every 2 years and has the capability to bring higher flood depths than a more likely event.

Flood-MapsRegularEvent

This type of event has a likelihood of occurring once every 5 years and has the capability to bring higher flood depths than a more likely event.

Flood-MapsVeryProbableEvent

This type of event has a likelihood of occurring once every 20 years and has the capability to bring higher flood depths than a more likely event.

Flood-MapsProbableEvent

This type of event has a likelihood of occurring once every 100 years and has the capability to bring higher flood depths than a more likely event.

Flood-MapsVeryRareEvent

This type of event has a likelihood of occurring once every 500 years and has the capability to bring higher flood depths than a more likely event.

Flood-MapCurrentFuture

The max depth of flooding estimated at the footprint of the largest building on this property. If this property is undeveloped or vacant, this represents the depth of water estimated at the center of the property. Read about the flood model methodology behind Risk Factor <a href="https://help.riskfactor.com/hc/en-us/search?utf8=%E2%9C%93&amp;query=methodology">here</a>.

Flood-ConsequencesAnnualizedDamages

Annualized damages are calculated by multiplying the likelihood of a flooding event to happen in a given year by the damage it would cause. As a changing environment makes floods more common and severe, the annual damage forecasted each year goes up.

Flood-ConsequencesbyLikelihood

Flood depth can vary depending on how likely a flood event is to occur. Events that are less likely have the capability to bring higher flood depths than a more likely event.

Flood-ConsequencesbyDepth

Flood depth can vary depending on the severity of the event. This can also impact the potential damages incurred by a property in a flood.

overallDetails-squareFootagePrice

Calculated by dividing the cost of rebuilding this structure (not including contents like furniture or appliances) by the square footage of the structure. For example, a structure with a rebuild cost of $100,000 that is 10,000 square feet will have a price per square foot of $10.

Heat-propertyDetails-electricRate

The cost per kWh of electricity as specified on the building&#8217;s energy bill. The average cost in per kWh in the US is $0.144

Heat-propertyDetails-coolingTemp

The interior temperature set on the building&#8217;s cooling system or air conditioning unit

Heat-propertyDetails-Title

Building details that affect what damages will be experienced as a result of heat

Flood-propertyDetails-basementFinish

If the building has a basement, whether or not the basement is finished

Does Manassas have Flood Risk?

Flood Protection Measures for Manassas

Steps for Communities to Enhance Flood Resilience

Anticipating Changes in Flood Risk for Manassas

Historical Flood Events in Manassas

Understanding the Factors Behind Changing Flood Risks

Additional Community Measures to Address Flooding

Identifying Other Potential Risks in Manassas