Blue-Water Scarcity Pressure Index.

Models scarcity-weighted blue-water pressure from animal drinking, farm service water and feed supply chains. Downstream processing is excluded. A measured fall lifts the sub-index; the signal is modelled rather than a uniformly observed national statistic.

The water metric is a modelled blue-water scarcity-pressure signal.

The metric combines direct animal drinking and farm service water, blue water consumed by domestically produced feed and blue water embedded in imported feed. Downstream processing is outside the load-bearing boundary. Public GLEAM data do not provide bilateral feed origins, so imported-feed pressure uses a disclosed non-bilateral approximation: destination import dependency multiplied by a global exporter-quantity-weighted scarcity factor. Every release records bilateralClaimed as false.

AWARE 2.0 v1.0.2 official annual country and crop factors are applied before aggregation to the 19 sovereign G20 members; the model does not claim basin-month precision. The European Union and African Union remain reporting lenses and are not added to the sovereign total. Green and grey water are disclosed as supporting evidence but are not weighted into this blue-water metric.

Quantity

Scarcity-weighted blue-water footprint relative to a fixed baseline.

Direction

-1. Lower scarcity pressure lifts the sub-index.

Evidence boundary

A modelled signal based on annual country/animal/item activity and water-intensity data plus annual country/crop scarcity factors, not a uniformly measured national withdrawal statistic.

Required disclosure

Factor version, model vintage, modelled share, imputation share, country coverage, source hashes and the non-bilateral imported-feed approximation accompany every published value.