Flood Damage >> How To Dry Out After A Flood

Development in flood prone areas is development in harm's way. New construction in thefloodplain increases the amount of development exposed to damage and How To Dry Out After A Flood  an aggravate floodingon neighboring properties.Development outside a floodplain can also contribute to flooding problems. 

Stormwater runoff isincreased when natural ground cover is replaced by urban development. Development in thewatershed that drains to a river can aggravate downstream flooding, How To Dry Out After A Flood overload the drainagesystem, cause erosion, and impair water quality. 

Accordingly, most communities have enactedseveral ordinances to protect people from activities that may cause flooding or drainageproblems.9 Before you build on, fill, alter, or regrade your property, How To Dry Out After A Flood always check with your buildingdepartment. 

A permit is probably needed to ensure that such projects do not cause problemson other properties.9 Do not dump or throw anything into the storm sewers, inlets, ditches or basins.Dumping in ditches, storage basins, and How To Dry Out After A Flood wetlands is a violation of local codes. 9 

Every piece of trash can contribute to flooding. Even leaves, grass clippings and branchescan accumulate, plug storm drain inlets and channels, or kill vegetation and contribute toerosion. If your property is next to a ditch or How To Dry Out After A Flood storage basin, do your part and keep the banksclear of brush and debris.9 

If you see dumping or debris in the ditches or basins, filling or construction near propertylot lines, How To Dry Out After A Flood or filling or construction in a mapped floodplain without a permit sign posted,contact your building department. 

The debris or project may cause flooding on your property.New buildings in the floodplain must be protected from flood damage. Local laws require thatthe lowest floor (including basement) of new residential buildings must be elevated above thebase (or 100-year) flood level. How To Dry Out After A Flood

There are additional local and state restrictions on filling, gradingor building in a mapped floodway.Local codes also require that substantial improvements to a building be treated as a new building.A substantial improvement is when the value of an addition, alteration, repair or How To Dry Out After A Flood reconstructionproject equals or exceeds 50% of the value of the existing building. 

In the case of an addition,only the addition must be protected. In the case of an improvement to the original building, theentire building must be protected.For example, if a house in the floodplain is flooded, has a fire, is hit by a tornado, or is otherwisedamaged so that the value of the repairs equals or exceeds 50% of the value of the buildingbefore the damage, How To Dry Out After A Flood then the house must be elevated above the base flood level. 

In somecommunities, improvements are cumulated, so small projects add up to 50% over time.These regulations are designed to protect you and your neighbors.By keeping the drainage system clear and How To Dry Out After A Flood getting the proper permits before you build,you can help prevent flooding and other drainage problems. 

Because most flooding is shallow and slow moving, there are many ways you can protect yourhome, garage or other property from flood damage. Different techniques are appropriate fordifferent types of buildings. Use the following as a guideline:9 If your house is on a crawlspace → Read the sections on elevation, barriers, How To Dry Out After A Flood and wet floodproofing (pages 6, 7 and 9)9 

If your house is on a slab foundation → Read the sections on barriers and dry floodproofing (pages 7 and 8)9 If you have a basement, split level, → Read the sections on barriers, wet floodproofing,or other floor below ground level and How To Dry Out After A Flood basement protection (pages 7, 9 and 10 − 14)

Additional information on flood protection is available from FEMApublications, including Homeowner's Guide to Retrofitting: Six Waysto protect Your House from Flooding. This publication can be viewedon FEMA's website: www.fema.gov/hazards/floods/lib312.shtm. How To Dry Out After A Flood

Another good publication is FEMA's Protecting Building Utilities FromFlood Damage, which is at www.fema.gov/hazards/floods/pbuffd.shtmIt is important to note that these protection measures are for existingbuildings. There are different requirements for new buildings. How To Dry Out After A Flood

Thesemeasures will not relieve you from the need to buy flood insurance ifyour building is in a mapped floodplain.ElevationShort of removing it from the floodplain, How To Dry Out After A Flood the best way to protect a house from surface flooding isto raise it above the flood level. 

The area below the flood level is left open to allow floodwatersto flow under the building, causing little or no damage. Elevation is required by law whenever anew house is constructed in the floodplain.Elevation is usually most cost-effective forbuildings on crawlspaces because it is easiestto get lifting equipment under the floor and How To Dry Out After A Flood disruption of the habitable part of the house isminimal. 

Because northeastern Illinois floodwaters are usually not very deep, the appearance of the elevated house is similar to that ofa house on a two- or three-foot crawlspace. Ifthe house is raised two feet, How To Dry Out After A Flood the front doorwould be three steps higher than before. 

Barriers keep surface flood waters from reaching a building. A barrier can be built of dirt or soil("berm") or concrete or steel ("floodwall"). The standard design for earthen berms is threehorizontal feet for each vertical foot (3: 1 slope). As a result, How To Dry Out After A Flood you should plan on needing an areasix feet wide (at a minimum) for each foot in height. 

Depending on how porous your ground is, if floodwaters will stay up for more than an hour ortwo, your barrier will need to handle leaks, seepage of water underneath, and rainwater that fallsinside the perimeter. You will need a sump and/or How To Dry Out After A Flood drain to collect the internal groundwater andsurface water. 

A pump and pipe is also needed to pump the internal drainage over the barrier.A berm or floodwall should be as far from the building as possible to reduce the threat of seepage and How To Dry Out After A Flood hydrostatic pressure. However, it must not interfere with drainage along your propertyline. 

Where the house is close to the property line, you may need place the berm next to the wallas discussed on page 14.Don't forget: a permit is needed for filling or regrading a yard. There may be restrictions onbringing fill onto your site if it blocks the flow of flooding or How To Dry Out After A Flood displaces floodwater storage areas.

For example, state regulations require that barriers located within the regulatory floodway bewithin ten feet of the structure (as in the example on the right, above).Precautions: Barriers can only be built so high. They can be overtopped by a flood higher thanexpected. How To Dry Out After A Flood

Earthen berms are susceptible to erosion from rain and floodwaters if they are notproperly sloped and covered with grass and How To Dry Out After A Flood maintained. Don't plant trees or shrubs on a berm(their roots can cause leaks). Barriers can settle over time, lowering their protection levels.Some barriers have openings for driveways and sidewalks (as in the example on the right,above). 

Closing these openings is dependent on someone being available and How To Dry Out After A Flood strong enough toput the closure in place. You also need to account for water in the sewer lines that may back upunder the barrier and flood inside your house.

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