Hi!

You can map the maximum width of a floodplain by temporal image analisys and DEM analisys, and map the land-use in the area. Later, overlap these areas with the areas affect by past floods (historical review). You can use "damage cost" data (lifes lost and financial losses) in each event, and try a forecast.

In a GIS environmnemt, determine possible "evacuation routes" with the application of "path/cost distance" techniques. Tematic maps showing what is "reallly important" (synthesis) simply and clearly and with accessible language helps the general undestanding of a problem.

I hope this ideas can help you.

Best regards.

Thank you Eduardo Marques Martins , How can i simply get this for general public,one suggestion is to develop an app where the public can educate a disaster situation

Hi!

I agree, is a good suggestion. You can use the APP to:

- Educational pourposes: with information of health and prevention;

- Safety/Security pourposes: with the GPS, the user can identify whether it is in a risk zone and (i don't know if it's possible) you can insert safety/evacuatioon routes which will be activated and displayed by the authorities in disasters situations.

For those that don't have/use cell phones, an alternative is hand out the review and summary maps of the analisys for the authorities to tansmite the information.

Sucess!

Best regards...

Dear,

Microwave or Radar images are quite helpful to understand the depth of the flood. besides this one can do flood mapping with temporal images and one also can assess the soil erosion status in flood prone area with GIS.

regards.

Mohomed,

indeed, you are describing a tricky aspect of science - perfect knowledge (by scientists or decision  makers) alone is not enough. There are typically 3 types of stakeholders here, and all need to be involved and play their part well for things to improve: scientists need to develop solid understanding of a problem, e.g., flooding, but then also need to communicate this appropriately to decision makers. That means first of all they need to find adequate ways to communicate complex issues, ideally by working with those decision makers from the very beginning to make sure it's clear what those decision makers need and what they understand (and what they don't understand). Only then are those decision makers able to make decisions and also communicate them to the public. In my view it's the decision makers that should be responsible for the bulk of the communication with the people, although scientists themselves can play a useful role, by going into schools, writing for newspapers or non-scientific publications, etc. Still the hard part is to translate flood properties into understandable and meaningful language. A typical people living in a flood-prone area will not understand return periods, flood probabilities, measures of uncertainty in predictions, etc. Even understanding simple parameters such as flood depth,ad n relating them to their own personal circumstances will be challenging for most people. One useful way can thus be to associate scientific information such as a flood depth/duration/energy map with clear, representative illustrations of the effects of such an expected/possible event (a house flooded to 1 m, 2 m, or more, crops of type x being flooded by a few cm vs. 1 m, or for a day vs for a  month, or by a  ' slow flood' vs a flash flood. People respond to visual cues, and to things they are familiar with. Involving people from the communities in selecting or designing such effective illustrations will also be helpful.

Regards, Norman

You can follow this article for landscape vulnerability to flood https://www.researchgate.net/publication/294089869_Assessing_flood_inundation_extent_and_landscape_vulnerability_to_flood_using_geospatial_technology_A_study_of_Malda_district_of_West_Bengal_India

Article Assessing flood inundation extent and landscape vulnerabilit...