Climate Risk & Water Security Mapping

Summary

Drought and erratic rainfall were threatening food security in Lupane, and children were walking long distances for water, sometimes missing school as a result. This independent research used GIS to map water sources against villages, schools and clinics. It identified water-stressed communities, areas far from dependable water and boreholes likely to fail in drought. The findings drew stakeholders' attention to critical gaps, informed planning, and contributed to improved access to water for at least 848 households.

Context

Lupane is a largely rural, semi-arid district where many households depend on boreholes, dams, rivers and seasonal streams for water. In dry years, the gap between where people live and where reliable water is available widens, and that gap is not shared equally.

The problem

Water insecurity was the visible symptom of several overlapping issues: exposure to drought, infrastructure that failed when it was needed most, and long distances to dependable sources. The cost fell heavily on children, whose time spent collecting water came at the expense of school. Without a clear spatial picture, it was difficult to know where intervention would make the greatest difference, or to make that case to the people who allocate resources.

The question we asked

Where is water vulnerability concentrated, and how can the location of environmental and community assets guide where intervention is planned?

Approach

The research was designed and carried out independently. GIS and spatial analysis were used to bring together, on one map, the features that shape water access:

Water infrastructure: boreholes and dams
Natural sources: rivers, wetlands and seasonal streams
Community assets: villages, schools and health facilities

Overlaying these layers made it possible to identify water-stressed communities, settlements far from reliable sources, and boreholes likely to fail during drought. The findings were then shared with local stakeholders, who took them forward into planning.

What changed

0households with improved access to water

Source: Original field research and GIS analysis by Climate & Sustainability Africa's founder.

The spatial evidence gave stakeholders a shared, concrete picture of where the problem was most severe. It drew attention to critical gaps in water security, informed planning, and contributed to improved access to water for at least 848 households. One important result was a reduction in the distances many children travelled to collect water: time that can return to school and rest.

Limitations

We publish what this case cannot yet show, so others can build on it accurately.

The 848-household figure records improved access; the long-term reliability of new or restored sources has not yet been assessed.
Distance is one dimension of access. Water quality, cost and seasonal reliability need separate measurement.
The mapping reflects conditions at the time of analysis and needs updating as infrastructure and climate patterns change.

What we learnt

Maps change conversations. A clear spatial picture made an abstract problem concrete for decision-makers.
Combining infrastructure, natural sources and community facilities reveals vulnerability that no single dataset shows.
Independent research can move practice: evidence shared openly was taken up by the stakeholders able to act on it.
Children's time is a meaningful, often overlooked indicator of water insecurity.

Why it matters beyond this case

The case shows how spatially explicit evidence can connect climate risk with infrastructure, education, livelihoods and resource allocation. The same approach can be applied wherever limited resources must be directed to the communities that need them most.

Questions for further research

How durable are access improvements through successive droughts?

Can spatial vulnerability mapping be kept current with community-reported data?

How do improvements in water access translate into school attendance and household time use?