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In August 2019, WRI released an updated version of the Aqueduct™ Water Risk Atlas (Aqueduct 3.0). This document provides information on what’s new in Aqueduct 3.0 and explains why it matters by comparing results with those available in the old version of the tool (Aqueduct 2.1).

Decision-makers need future projections on water supply and demand. However, most of these decision-makers operate at the administrative or political scales, and therefore require country-level projections. This technical note utilized a spatial aggregation methodology to bring sub-catchment scale Aqueduct Water Stress Projections up to the country scale, fulfilling this need.