Water Supply and Stress Index Model (WaSSI)

WaSSI is a tool that models historical, current, and future watershed stress for a particular zip code by comparing water supply and demand. Planners can select which of two climate models to use (HadCM2SuL - warm & wet; or CGC1 - hot & dry) to assess possible effects on supply and stress created by climate change under these scenarios. WaSSI uses historical USGS or state water bureau data to estimate past demand; future demand and supply scenarios are based on modeled changes in land use, land management, population, and climate change. Ecological demands for water use do not appear to be incorporated into historical water "demand" statistics.

Publication Date: 2008

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  • Modeling tool


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