Peros Climate atlas

Drought

How could a prolonged dry period affect local water uses?

01How do I read this map?

Compare the broad brown pattern with the regional rainfall cell. Then explore the historical record and ask how local water sources and vegetation respond to dry periods.

  1. Brown cells show an invented regional moisture-deficit pattern, with a small land-cover influence.

  2. The approximately 625 m display cells deliberately show broad variation. Their size does not make the values observed or accurate.

  3. Darker cells do not establish crop losses, a failing water supply or a current drought declaration. The illustration has no observation date or forecast period.

Explore in the full map ↗
Full map ↗
Simulated pattern
LowerModerateHigherRelative intensity

Illustrative colours, not measured moisture deficits. Blank areas do not establish absence of risk.

02What does this indicator mean?

Rainfall deficits, dry soils and low river or groundwater levels describe different aspects of drought. Indicators compare conditions with an appropriate reference period and timescale. SPI describes accumulated rainfall anomalies; soil-moisture indicators describe soil water conditions. Neither is calculated by our demo overlay.

03What evidence is available here?

Real context

The CHIRPS record contains monthly regional rainfall estimates from 1991–2025. Compare the same months with the 1991–2020 reference average on the dashboard. A single dry month does not establish local drought impacts.

Locate the rainfall record ↗
Simulated overlay

A fixed synthetic field supplies the brown pattern. It is not derived from the displayed rainfall history, soil-moisture measurements or groundwater records.

Open the drought illustration ↗

The study window is approximately 10 km across, not an authoritative village boundary. Dates and resolution differ between datasets.

04How can we use it locally?

For water users and residents

Discuss which sources are used, what seasonal changes people notice and whether there are documented interruptions. Relate accounts to dates before comparing them with rainfall.

For agencies and land managers

Identify which records would distinguish a rainfall shortage from supply-system problems or changes in water demand. Investigate vegetation and agricultural effects using suitable local indicators.

Take these questions to a local discussion

  • Which water sources serve the village, farms or visitor facilities?
  • When have people noticed reduced supply, low flows or vegetation stress?
  • Are source levels, interruptions, demand or crop observations recorded consistently?

05What should happen next?

  1. Explore and record

    Explore multiple years of monthly rainfall and note periods worth checking against local accounts.

  2. Check the evidence

    Collect dated water-source, supply and vegetation observations, together with relevant agency records.

  3. Discuss suitable actions

    Discuss storage, demand management or protection of water sources where the evidence supports investigation. Establish feasibility and water-quality requirements with the responsible agencies.

06What can’t we conclude?

The illustration is not SPI, measured soil moisture or a drought forecast. Monthly rainfall cannot describe household water security or every short dry spell. Soil, groundwater, infrastructure and water demand remain important gaps.

For current conditions and emergency decisions, use official agency advice. This guide does not replace a local assessment.

References and further reading

These references explain mapping practice. They do not validate our simulated overlays or establish conditions in Kampung Peros.

Dataset provenance and downloads ↗