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Home > Technical Resources > Drought Planning Toolbox > DroughtIndices > Palmer Drought Severity Index (PDSI)  

DroughtIndices: Palmer Drought Severity Index (PDSI)

Title

Palmer Drought Severity Index (PDSI) 

Index Website

Index Description

A complex soil moisture calculation that has been used by federal agricultural agencies to determine when to provide drought assistance. It requires weekly or monthly precipitation and temperature data as inputs. The Palmer Index uses a +4  to -4 scale where 0 represents normal and negative reflects drought.

Index Use

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Created at 11/15/2010 3:46 PM  by System Account 
Last modified at 11/16/2010 11:29 AM  by System Account