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Estimation of the humanitarian caseload

Understand the humanitarian profiling system

The cluster caseload represents the total number of people targeted by all partners of a cluster for the planned response. It should not be confused with the Population in Need (PIN), or the population reached or covered:

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There is no consolidated cross-sector method to calculate a cluster caseload. The GWC has developed a standard methodology, but which needs to be adapted to each contextOCHA often provide harmonized methodology at country level. The following steps approach can nevertheless be followedused and adapted: 

  • Use the WASH PIN numbers for each geographical zone as a starting point
  • Use data on capacity access to make a first minimal caseload estimation (see following section)
  • Use data on access capacity to make a first second minimal caseload estimation (see following section)

Important differences between PIN and caseload can often be noticed. To increase the caseload , involves not only advocacy at all levels to gain access but also to enhance the capacity of partners with adequate resources, skills and tools do so.  

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  • Consider the gaps between the minimal caseload obtained and the PIN, and estimate the final caseload considering the advocacy for improvement of access and capacity that should be carried out

Use data on access to make a first minimal caseload estimation

The WASH humanitarian caseload is the part of WASH People in Need (PIN) that can will be realistically targeted considering operational difficultiesconstraints. Difficulties are usually measured in terms of operational and technical capacities of partners and Main constraints are access to target area (road access, security) . To estimate the caseload, the WCC must therefore have an estimation of the capacity of the partners that will be involved in the response. If and operational and technical capacities of partners. If capacity was maximal and access not an issue, the whole population in need could be targeted, and the caseload would be the PIN. But as there are always capacity issues, the PIN must be reduced accordingly.

An estimation of the planned access to target area is required to calculate the WASH caseload. If can be difficult for partners to reach the affected area because of bad road access in rainy season, risk of kidnapping or attacks on humanitarian convoys etc. In that case, only a percentage of the population in need can be reached. For example: 

  • In regions where there are acute access issues, you can estimate that only half of the PIN can be reached in these regions.

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  • In regions where access issues are moderate, you can consider that ¾ of the PIN can be reached in these regions

Use data on capacity to make a second minimal caseload estimation

In the same way as for access, an evaluation of partners capacity is required to calculate the WASH caseload. WASH capacity mapping is a long process that can take several months, so if a complete WASH capacity mapping exercise has not been done recently, a lighter and quicker evaluation of capacities needs to be done by the WASH coordination platform , for instance based on operational partner’s presence from the 4W.  before the caseload calculation. 

In each geographical zone, an estimate of the number and operational based on the capacity of WASH the partners, and defining estimate the maximum number of people that can be reached by the partners can be done if the maximum number of people is:

  • above the PIN, then use the PIN number as your caseload: and
  • lower than the PIN, then use maximum number of people than can be reached as your caseload.

Use data on access to make a final caseload estimation

In the same way as for capacity, as estimation of the planned access to target area is required to calculate the WASH caseload: even if capacity of partners is high, if they cannot reach the affected area because of bad road access in rainy season, risk of kidnapping or attacks on humanitarian convoys, then only a small percentage of the population can be reached. 

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. Compare this figure with the minimal caseload defined by access, and make a second round of caseload estimation

Consider priority advocacy for capacity and access improvement and estimate the final caseload

The figure obtained previously is the minimal caseload, considering a static picture of access and capacity. But access and capacity can be improved if the right advocacy is done at the relevant level. You know need to estimate the final caseload if successful advocacy is done. Even if this figure seem unrealistic at first, an important difference between people in need and the people targeted by the response is morally not acceptable as per cluster principles, and the issue must be communicated to the wider audience in advocacy messages.


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