Appraisal and Assessment of World Water Resources

TLDR

The paper critically analyzes the current state of global water resources assessment. The study employs basic data and methodological approaches to assess and predict global water resources, water use, and availability, and presents generalized hydrological network data on renewable water dynamics across continents, regions, countries, and river inflows to the ocean. The assessment reveals 20th‑century and projected 2010‑2025 water supplies for municipal, industrial, and agricultural use, identifies socio‑economic and physiographic factors driving resource loads, highlights regions of scarcity and deficit, and proposes strategies to improve supply and reduce deficits.

Abstract

Abstract A critical analysis of the present situation on the global water resources assessment is made. Basic data and methodological approaches used by the author for the assessment and prediction of water resources, water use and water availability on the global scale are briefly described. On the basis of data generalization of the world hydrological network new data are given on the dynamics of renewable water resources of the continents, physiographic and economic regions, selected countries as well as on the river water inflow to the world ocean. The results of the assessments for the 20th century and for the future before 2010–2025 on the water supply for municipal, industrial and agricultural needs as well as an additional evaporation from reservoirs are presented. Loads on water resources and water availability depending on socio-economic and phisiographic factors are analyzed; regions of water scarcity and water resources deficit are discovered. Possible ways of water supply improvement and elim...