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Home > Technical Resources > Drought Planning Toolbox > DroughtIndices > Colorado Monthly Precipitation and Percent of Normal Maps  

DroughtIndices: Colorado Monthly Precipitation and Percent of Normal Maps

Title

Colorado Monthly Precipitation and Percent of Normal Maps 

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Index Description

The Colorado Climate Center develops monthly precipitation maps in or to track Water Year (October 1- September 30) precipitation to aid in drought monitoring, runoff forecasting, agricultural planning, and emergency management.  The percentage of normal precipitation is calculated by dividing actual precipitation by normal precipitation—typically considered to be a 30-year mean. This can be calculated for a variety of time scales. Usually these time scales range from a single month to a group of months representing a particular season, to an annual or water year. Normal precipitation for a specific location is considered to be 100%.

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Created at 11/15/2010 3:52 PM  by System Account 
Last modified at 11/16/2010 11:31 AM  by System Account