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The floodlabel survey

Our team of experts has developed a questionnaire on the status quo of your building, which is specifically addressed to the concerns of flood prevention. For an effective self-enquiry you have the possibility to answer detailed questions. As a result, you will receive free of charge an automated short evaluation of your object directly afterwards. However, this is not yet the floodlabel.
To achieve the floodlabel it still needs an expert checking all your indications to be plausible and correct.

 

General overview:

1. DAMAGES IN THE PAST

If in the past there have already been damage events at and in your building, this is an important indication of the assessment of the risk situation. Even if you have been living at your current place of residence for many years, it also is useful to include the experience of old-established neighborhood.

Have damages from flooding already occurred - wether in your neighborhood or at your building?

2. FLOODS TRIGGERED FROM WATER BODIES

vicinity of water bodies

Even small inconspicuous rivulets can become an immense flood hazard due to outflows. On your walks in the area of the building pay attention for hints that flooding might have left: high-water marks, after rainfall flattened grass next to water, small landslides on water embankments or similar.

Is your building within sight of a water, or are there waters in your surroundings?

3. FLOODING AREAS THROUGH WATER BODIES

(In many regions of the world) there is publicly available information that indicates potentially affected areas. The following link gives you the opportunity to have an insight to already known flood areas: Here you can find out if your object is in a blue marked area – please note that smaller streams or rivers are not listed here. The flooding areas depicted, among other functions, serve as a basis for the planning of the municipalities. Additional information can also be found at the relevant offices and authorities. More information can be found under the heading `flood hazards“` and `research and publications`.

Do you know whether your building is located in or near a flooding area?

4. FLOOD PROTECTION & FLOOD CONTROL FACILITIES

If in your area existing, protective devices and constructions - such as flood defense walls, dikes or dams - do serve as a certain damage mitigation. Still, nothing is absolutely safe, especially not in times of increasingly frequent extreme climate phenomena. But on your part you can be proactive and upgrade the buildings’ flood resilience through additional measures.

Do you know whether your building is close to an existing flood protection facility?

5. SEWER BACKPRESSURE

overflowing trunking lids

Sewers have a limited water storage capacity. In the course of heavy rain events, the waters instead of running into them can pour out of them (e.g. through shafts and road inlets) and straight away on and into your property.

Has the sewage system on your street been overflown once or more times (water leaking out of a shaft) causing flooding?

6. WATER BACK-UP (BACK-PRESSURE) IN THE HOUSE / BASEMENT

In the event of heavy rain it is possible that water can enter the building via the connection between the drainage of the land and the public sewer system. When the public sewer lines are overloaded, the water mix of rain and waste can be stowed back and through your buildings’ installations pour all over. This can cause major damage and hygienic problems.

Did this kind of water already pour out from sinks, toilets or cellar drains in your building/apartment?

Heavy Rains and torrential floods

Even if your building is located at a greater distance from water, there still can be a potential flood risk. For example caused by sudden water flows on the surface of the terrain (if the soil is not capable of absorbing these water masses anymore). Here the topography (natural or human-changed terrain) plays a decisive role as it directs the flow. So if your building is situated in such a flow path (e.g. a slope with strong inclination, a terrain with a moderate gradient or a hollow) or the plot is at stake of water inlet (garden and terrace design, rain gutters) - under all those topographical conditions one must reckon with water penetrations into the house.

7. OVERFLOW OF RAIN GUTTERS

A very typical cause of heavy rains: Water can no longer be drained from the roofs’ surfaces and thus penetrates into the house. A scenario of concrete danger would be: When the gutters overflow in the course of heavy rain and the water can flow into the house through existing building apertures (especially at a low height).

Have you already observed that your rain gutters are overflowing with heavy rain?

8. HOLLOWS

Is your building located in a hollow as lowest point of the ground, rainwater can accumulate on the surface. Note that even in supposedly safe distance to water bodies, there is a potential for flood risk through water runoff caused by rainfall.

Is your building in a hollow, a basin or similar?

9. HILLSIDE

If your building is located on a slope or below a slope, the rainwater runoff can accumulate over the surface. Note that even in supposedly safe distance to water bodies, flood risk can arise from waters flowing on and off the surfaces.

Is your property located on a hillside or directly below?

10. TORRENTS

Is your building situated in a potential flow path? Stormwaters caused by torrents that do not get absorbed by the soil and hence do run over the surface - throughout the streets, or other topographical inlets that can serve just like river basins - right into your home. Beware of the high flow speeds!

Have you ever seen waters running uncontrolled (extensively) over the surface (paths, roads or simply over surfaces) flowing right in the direction of your building, or even right into it?

11. UNDERGROUND FLOODWATER

In the wake of floods there is an underestimated threat posed by rising groundwater levels. Which means even floods from beneath ground can penetrate into a house. This happens not that fast, but can even cause more permanent damage in the aftermath due to the long-term duration of the water logging - as water rises faster than it recedes.

Did ever occur an inundation in the basement of the building (even at some time after rain or flood) of yours or the neighbours?

12. PATHS OF WATER PENETRATION

Principally water can find many ways to penetrate into a building. Whether your object could be affected depends on it’s design and construction. Even at low water depths (e.g. caused by torrents or by back pressure from the sewer and/or from the underground floodwater), water can enter the house. Especially to buildings with basements already relatively low water levels can bring the threat of water penetrations and their respective damages.

Does the ground floor sit below the surface (like a semi-basement) of the terrain, or on it’s edge?

13. MEASURES OF FLOOD PROTECTION & BUILDING PRECAUTION

Besides your strong proactive approach in the matter there are the most important precautionary measures:

  • a realistic risk assessment
  • the correct behaviour, that is driven by your knowledge
  • optimal object protection
  • if necessary, the advice of a competent person in your area.

(Please click on our knowledge section for full information.)

The following questions will guide you to the relevant information about possible measures:

Have you already undertaken flood protection measures?

Does humidity and dampness occur in the basement of your building?

Is the heating in your building run by an oil-heating system and is it buoyancy secured?

Have you already detected in the building spots and cracks that are prone to water penetration and have sealed them consequently?

MAIN BUILDING DETAILS

In the following you will find a few questions referring to some details about your building. Your respective indications will help an expert, whom you might consult for assessing more deeply the flood resilience <-> flood proneness of your building.

Year of construction:

Building type and construction method:

with a basement:

the postal code of your building:

Thank you for your participation in this questionnaire! You can get your short evaluation directly by clicking here.

We hope that you will be spared from the natural flooding hazard and, therefore, we call again your attention and initiative for the precautionary measures.
Especially since it can concern and strike anyone!

Send me a copy of the results to the following email address:

Hochwasserpass