The U.S. National Electronic Drought Atlas: Statistical Data Analysis with GIS-Based Presentation of Results

In 1989 the U.S. Army Corps of Engineers was charged with the responsibility of conducting a national study of water management during periods of drought. One of the results of the study is the National Drought Atlas (Willeke et al., 1995), which contains analyses of data on monthly precipitation, streamflow, reservoir levels and the Palmer Drought Index for over 1000 measuring sites in the continental U.S.A> In this paper we descrive only precipitation analysis, which used the techniques known as Regional L-moments (Hosking and Wallis, 1996). We show how the results of the analysis are presented in user-friendly form in a GIS-based version of the National Drough Atlas.

By: J. R. M. Hosking and J. R. Wallis

Published in: RC20499 in 1996


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