A report from the Public Policy Institute of California, August 2015.
Ongoing (as of early 2016) analysis from the USDA's Economic Research Service
An assessment of the drought that affected the central U.S. in 2012. Executive Summary
Results of a workshop in August 2013.
Roger S. Pulwarty, director of the National Integrated Drought Information System, testified to the U.S. Senate Committee on Energy and Natural Resources in April 2013 about the effects of drought on energy and water management.
The U.S. Department of Agriculture's Economic Research Service kept a running tally of drought's impacts in 2012.
The Natural Resources Defense Council has created a web-based tool to display crop insurance payouts due to extreme weather by state and country, using 2012 data from the U.S. Department of Agriculture's Risk Management Agency.
The National Oceanic and Atmospheric Administration's National Climatic Data Center tracks billion-dollar disasters, including drought.
Drought Indemnity Maps & Data
These maps show where drought-related losses occurred, through 2009, based on data from the U.S. Department of Agriculture's Risk Management Agency. The data are also available.
The Dust Bowl, the drought of the 1930s in the Great Plains of the United States, is perhaps one of the best-known and best-documented droughts in U.S. history. It altered the course of history and eventually prompted revisions of land management practices and agricultural policy, including the formation of what was then the Soil Conservation Service, now the Natural Resources Conservation Service. This link goes to a history of the Dust Bowl on the NDMC's website.
Sources of Current U.S. Drought Impacts