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Selected research papers, reports, and other resources which show the current state-of-knowledge and the progress in our understanding of the variability of climate and hydrology in the Colorado River Basin and the potential impacts of future climate change.

The CDI is derived by combining Standardized Precipitation Index (SPI), the Soil Moisture Anomaly (SMA), and the FAPAR Anomaly, and is used for detecting and monitoring areas that either are affected or have the potential to be affected by agricultural drought.

Precipitation data from CoCoRaHS: a non-profit, community-based network of volunteers of all ages and backgrounds working together to measure and map precipitation (rain, hail, and snow) across the U.S.

Condition Monitoring Observer Reports on Drought (CMOR-Drought) is a tool that allows citizen scientists to submit observation reports relating to drought, which are presented in a map that can be used to view and access submitted information and attachments.