GCRI · Water Nexus

STEM foundation of Water Nexus

The science, technology, engineering and mathematics Water Nexus rests on. Each method has a canonical page in the STEM Commons, hosted by the Global Centre for Risk and Innovation (GCRI), and a page here on how it is applied in this field.

02Methods

The methods behind the field.

  1. Hydrology and water scienceRainfall-runoff modelling of a basin · Water balance accountingSteward · Water NexusApplied here
  2. Water and environmental engineeringTreatment and distribution resilience · Water safety planningSteward · Water NexusApplied here
  3. Geospatial information systemsExposure mapping · Catchment and basin delineation · Public-safe basin mapsSteward · Space and Earth ObservationApplied here
  4. Earth observation and remote sensingFlood extent from radar · Surface water and reservoir monitoringSteward · Space and Earth ObservationApplied here
  5. Sensors, IoT and observation networksGauge and well telemetry · Utility network monitoring · Low-cost sensing with stated uncertaintySteward · Critical InfrastructureApplied here
  6. Forecasting and time-series analysisFlood forecasting by reach · Seasonal drought outlooks · Inflow forecasts for reservoirsSteward · Climate and HazardsApplied here
  7. Extreme value theory and tail riskReturn-period flows and rainfall · Regional frequency analysisSteward · Reinsurance and CatastropheApplied here
  8. Spatial statistics and geostatisticsRainfall and groundwater interpolation · Regionalisation to ungauged basinsSteward · Space and Earth ObservationApplied here
  9. Uncertainty quantification and model validationEnsemble and parameter uncertainty · Propagation through the cascade · Evidence labellingSteward · Systems Science and ModellingApplied here
03Method mix

Why water needs this combination of methods.

Water risk needs a hydrological core (hydrology, extreme value statistics, forecasting), observation (Earth observation, sensors, geospatial methods), spatial statistics to move between gauges and basins, uncertainty quantification to carry errors to decisions, and environmental engineering for the infrastructure that delivers water.

04Why it matters

Grounding makes claims checkable.

When a finding names the methods it depends on, a reader can see its assumptions and limits, and an expert in that method can challenge it.

05Sources

Where this page’s references lead.

The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.

07Questions

Questions and answers.

What is a steward platform?
The platform that maintains the canonical description of a method and reviews how it is applied across the Consortium.
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Reports is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.

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Water Nexus

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