Guidebook - Using Tree-Ring Records for Understanding Droughts in a Long-Term Context

The purpose of this guidebook is to introduce water resource managers to extended records of streamflow and precipitation developed using tree-ring data, and to demonstrate how these data provide insights on drought risk. While streamflow and precipitation gage records show climate and hydrologic variability over the 20th and 21st centuries, the reconstructions document variability over a much longer period of time, from hundreds to thousands of years into the past.