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The US Army Corps of Engineers provides current, forecasted, and historical project data for the five federally operated reservoirs in the ACF River Basin.
The Weekly Palmer Drought Index (PDI) and Palmer Hydrological Drought Index (PHDI) are estimations of the monthly PDI and PHDI on an operational weekly basis.
USDM Drought Change Maps display changes in drought class degradation and drought class improvements across the United States. USDM offers Drought Change Maps at weekly, monthly and annual timescales.