This publication, the third module of a resource manual to support the training of planners and practitioners in managing flash flood risk, deals with structural measures. It presents bioengineering techniques, physical measures for slope stabilisation and erosion control, and physical measures for ...river training. It also presents the concept of integrated flood management as a component of integrated water resource management. It emphasizes that structural measures are most effective and sustainable when implemented together with appropriate non-structural measures. The manual is aimed at junior to mid-level professionals with a civil engineering background working on flash flood risk management at the district level.
Flash floods are among the most destructive natural disasters in the Hindu Kush Himalayan region. Flash flood mitigation is generally addressed by community-based organisations, local non-governmental organisations, or district and local-level staff in government organisations. But these groups often lack adequate understanding of the processes causing flash floods and knowledge of flash flood risk management measures.
more
This paper presents lessons learned from previous flood responses in developing countries, based on a structured review of the literature. It is intended for people working in relief and recovery operations who have to decide if, when and how to intervene after a flood.
Throughout the region, heavy rains that intensified in late April have resulted in excessive flooding, affecting more than half a million people; damaging infrastructure and livelihoods and caused over 370 deaths. Although the rains have also brought relief to some areas that have been affected by t...he worst drought in decades, namely; parts of Ethiopia, Puntland, Somaliland and a number of countries in southern Africa, the food security situation in these areas is not expected to significantly improve, due to the scale and intensity of the El Nino-induced drought that has already depleted coping mechanisms.
more
The floods caused by the Tropical Cyclone IDAI has affected 3 million people in the Republics of Malawi, Mozambique and Zimbabwe leaving 839 people dead, and this figure continued to rise as the rains stopped and water subsided. To date, over 201,476 people (Table 1) have been displaced and about 31...7 camps established. A total of 2,347 people have been reported injured and over 300 people are still missing in the affected countries.
more
299 deaths have been recorded and 329 people are still missing, according to the Government.
• Latest assessments indicate that the homes of some tens of thousands of people have been destroyed or damaged beyond habitability. Most of these people are staying with hosts in the extended community.
...
• Revised Flash Appeal requires US$294 million to respond to the drought and Cyclone Idai.
• Food Cluster partners have so far assisted an estimated 30,000 people in the worst-affected areas of Chimanimani and Chipinge.
• Access to a sufficient quantity of water for drinking, cooking and personal hygiene has been restored for 43,000 people.
• Eight clusters have been activated to bolster the humanitarian response effort in support to the Government of Zimbabwe,
more
The official death toll was 447 people as of 25 March, according to the Government.
• Nearly 129,000 people are sheltering in 143 collective sites across Sofala (more than 97,600 people), Manica (more than 14,800 people); Zambezia (more than 9,600 people); and Tete (more than 6,800 people).
...• The entire District of Nhamatanda in Sofala Province has been affected by Cyclone Idai and related floods, and nearly 15,000 people are sheltering in 14 sites across the district
more
The President has declared the impact of Cyclone Idai in Zimbabwe a state of disaster.
• The Cyclone Idai weather system hit eastern Zimbabwe on 15 and 16 March, with Chimanimani and Chipinge districts in Manicaland Province hardest-hit.
• At least 31 deaths have been reported and over 100 peo...ple are missing.
• The town of Chimanimani has reportedly been cut-off by floods and landslides.
more
This Case Study explores flood forecasting systems from the perspective of its position within the flood warning process. A method for classifying the different approaches taken in flood forecasting is introduced before the elements of a present-day flood forecasting system are discussed in detail. ...Finally, the state of the art in developing flood forecasting systems is addressed including how to deal with specific challenges posed.
The target group of this case study are decision makers in disaster risk management and/or water management. The case study should help to understand some hydrologic basics of the flood forecast and assist in the administration and implementation of an appropriate flood warning system in a specific environment, to find the best solution for a region.
Best solutions depend mainly on quality and availability of data, the areas and/or points of interest, catchment properties, cross border catchments, and financial capabilities with special consideration of flood forecast.
more
Following flood levels of the hydrological stations monitored in Niamey (Niger Republic) and Malan Ville (Benin Republic) reaching the red alert zone, torrential rainfall and ensuing floods affected 91,254 people or 15,209 households in Jigawa, Kebbi, Kwara, Sokoto, and Zamfara state (amongst other ...states) of Nigeria on 6 October 2020. The flood incident was caused by the intensity of the rainfalls at the peak of the flood season and the release of dams located in neighbouring Niger, Cameroon, and Benin, which resulted in the Benue and Niger rivers overflowing and affecting communities living along their banks and in surrounding areas.
more
Pakistan is on the verge of a public health disaster as a result of the massive monsoon rainfalls and unprecedented levels of flooding that are affecting 33 million people across the country.
The risk of disease outbreaks is extremely high and malnutrition rates are rising.
WHO requires US$ 81.5 m...illion to respond to this health crisis in flood-affected Pakistan, to ensure a coordinated delivery of essential health care services, efficient management of severe acute malnutrition, and stronger outbreak detection and control.
more
21 Oct 2022. Cases of malnutrition escalate rapidly as the lives of millions of children remain in jeopardy
A new survey on the impact of the floods in Pakistan on older people reveals that hundreds of lives are needlessly being put at risk due to the decimation of health services and the rise of diseases like malaria and diarrhoea, which can be killers to older people with weaker immune systems.
After a flood, food that has been in contact with flood-water may have become unsafe for human consumption. These flyers include tips to reduce food safety risks in the event of a flood for households,