Illinois State Water Survey
Institute of Natural Resource Sustainability
University of Illinois at Urbana-Champaign
Institute of Natural Resource Sustainability
University of Illinois at Urbana-Champaign
Illinois State Climatologist Office
Jim Angel, state climatologist
48-Month Drought in Illinois
Jim Angel, state climatologistThe 48-Month Drought at Return Periods of a) 25 Years, b) 50 Years, c) 100 Years, and d) 200 Years, Expressed as Percent of Normal 1971-2000 Precipitation. Source: The Water Cycle and Water Budgets in Illinois: A Framework for Drought and Water-supply Planning by Derek Winstanley et al., Illinois State Water Survey IEM 2006-02 (pdf).
University
of Illinois Urbana-Champaign- Illinois State Water Survey
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- Last Modified: March 11, 2008