Peros Climate atlas

Flooding

Where could water collect, and what would we need to check?

01How do I read this map?

Follow the blue corridors across the landscape, then compare them with surface elevation. Local observations are needed to establish where flooding actually occurs.

  1. Blue corridors follow drainage-like paths routed across the surface-elevation grid and nearby low ground.

  2. Darker blue means a higher invented display score. It does not mean a particular depth or annual probability.

  3. Uncoloured land has not been assessed as safe. Small drains, culverts, embankments and upstream conditions are not represented adequately.

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

Illustrative colours, not measured flood depths. Blank areas do not establish absence of risk.

02What does this indicator mean?

A flood-extent map describes an inundated area for a specified event or modelled condition. A depth map adds water depth; a probability map describes likelihood. These are different indicators. Our illustration provides none of those measurements.

03What evidence is available here?

Real context

Copernicus GLO-30 supplies roughly 30 m surface-elevation cells, including trees and buildings. Use the elevation layer to inspect the wider landscape, not individual floor or drain levels.

Inspect surface elevation ↗
Real context

CHIRPS provides monthly rainfall estimates for the regional cell containing the village point. A wet month cannot identify the timing, extent or depth of a local flood.

Locate the rainfall cell ↗
Simulated overlay

The blue pattern uses invented thresholds and terrain-routing rules. No river level, storm event or hydraulic calculation has been used.

Open the flood 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 a village or wider area

Compare the landscape with residents’ accounts of water accumulation and disrupted access. Mark questions for field checks, rather than ranking homes by the blue shading.

For a building or access road

Collect surveyed ground and floor levels, nearby drainage details and dated flood evidence. The present atlas cannot provide an address-level flood assessment.

Take these questions to a local discussion

  • Where has water actually accumulated, on which dates and for how long?
  • Which roads, bridges, water supplies or community facilities were affected?
  • Did water come from local runoff, a river, drainage backup or another source?

05What should happen next?

  1. Explore and record

    Record events with locations, dates, photographs and approximate depths, keeping the source and uncertainty.

  2. Check the evidence

    Ask the relevant agencies for drainage plans, surveyed terrain, river records and existing flood studies.

  3. Discuss suitable actions

    Use verified evidence to scope a local assessment and discuss options such as drainage maintenance or water storage. Check downstream effects before choosing works.

06What can’t we conclude?

This is not an observed flood map, a hydraulic model, a safe-route map or an emergency warning. Its 10 km window is not a verified village boundary. Infrastructure and household risk require local investigation.

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 ↗