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Since 1980 the United States has experienced more than 24 major droughts, resulting in almost 3,000 deaths and economic impacts exceeding $225 billion. All areas of the U.S. have some drought risk.


Pakowki Lake in southeastern Alberta, Canada, a lake that is usually dry but fills up with water when there is a lot of rain. Image Copyright © Michael Collier

Drought is a water shortage caused by abnormally dry weather. Drought is relative to normal conditions, so weather conditions that create severe drought in a state like Georgia may be normal for an arid state such as Arizona. All regions of the United States have some drought risk. The impact of a drought depends not only on the severity of dry weather but also on local water use and supply. To identify and forecast drought, scientists and managers must monitor not only precipitation but also water demand and available water resources. These resources may be found in reservoirs, in rivers, in the soil, and underground as groundwater.   Read more

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American Geosciences Institute

Latest News

IES Soils Glyph
December 13, 2017 At an executive session on December 13, the Senate Committee on Commerce, Science, and Transportation approved the National Integrated Drought Information System (NIDIS) Reauthorization Act of 2018 (S.2200) and the National Earthquake Hazards Reduction Program (NEHRP)...
NOAA U.S. Winter Outlook Temperature Map
On October 20, 2016, the National Oceanic and Atmospheric Administration (NOAA) released its U.S. Winter Outlook, and the updated La Niña forecast took center stage. Mike Halpert, Deputy Director of NOAA’s Climate Prediction Center (CPC), and David Miskus, also of CPC, briefed reporters and...
AGI Forum 2016 Groundwater Issues
There is still time to register for this event! The 2016 Critical Issues Forum, Addressing Changes in Regional Groundwater Resources: Lessons from the High Plains Aquifer, will be held October 27-28 in Golden, Colorado. If you are a current student or belong to an AGI member society, you will...
NGWA logo
The National Ground Water Association published a new Washington Update. They reported that the NGWA Regulatory Affairs Officer participated in a White House Roundtable on National Drought Resistance Resilience and discussed the importance of groundwater monitoring and modeling, the National Ground...
August 2016 Statewide Precipitation Ranks. Image Credit: NOAA
The National Oceanic and Atmospheric Administration (NOAA) held their latest Monthly Climate Briefing on September 15, 2016, and we have summarized the highlights for you below: •  August 2016 is the 17th warmest (73.6°F, 1.5°F above average), 2nd wettest August (3.47", 0.85" above average) since...
AGI Forum 2016 Groundwater Issues
Register today for the 2016 Critical Issues Forum on Addressing Changes in Regional Groundwater Resources: Lessons from the High Plains Aquifer, which will be held October 27-28, 2016 in Golden, Colorado. Members of AGI member organizations receive a discount on full priced registration. Book your...
U.S. national map showing drought risk.
#MapOfTheDay! Explore #drought risk across the U.S. http://bit.ly/1FRHakA via @DroughtCenter...
IES Water Glyph
April 21, 2016 The American Water Resources Association (AWRA) Policy Committee released the second volume of their report, “Proactive Flood and Drought Management”. As in Volume I, Volume II presents detailed case studies of efforts on local and regional scales to prepare for and mitigate the...
Atlean Lake in British Columbia
July 29, 2015 Senators Barbara Boxer (D-CA) and Dianne Feinstein (D-CA) unveiled a bill on July 29 to help mitigate the drought that is tearing through the state. Their solution involves transferring water from the San Joaquin Valley to central and southern California for agricultural relief. This...
IES Water Glyph
July 16, 2015 On July 16, the House passed the Western Waters and American Food Security Act of 2015 (H.R. 2898), largely along party lines. The bill addresses drought by laying the groundwork for new water storage projects in California and loosens environmental restrictions in the state, a...

Research Database Publications

Cover image for WRI-7 ; Source: Iowa Geological Survey
2013, Iowa Geological Survey (IGS)
Based on available pumping records, an average of 14.6 billion gallons of water are pumped from the Lower Raccoon River aquifer each year. Additional water production is available from the aquifer, but limitations exist during extremely dry years. Additional pumping capacity ranges from 10 percent...
Cover image for WRI-13 ; Source: Iowa Geological Survey
2015, Iowa Geological Survey (IGS)
The Iowa Geological Survey (IGS) completed a drought assessment to evaluate current and future groundwater storage and availability for the City of Sioux Center’s (City) alluvial wellfield. The City had previously hired DGR Engineering to design two low-head dams along the west fork of the Floyd...
Cover of fs2016-3026 ; Image credit: U.S. Geological Survey
2016, U.S. Geological Survey (USGS)
Urban development creates multiple stressors that can degrade stream ecosystems by changing stream hydrology, water quality, and physical habitat. Contaminants, habitat destruction, and increasing streamflow variability resulting from urban development have been associated with the disruption of...
Cover of fs2016-3008; Source: U.S. Geological Survey
2016, U.S. Geological Survey (USGS)
The U.S. Geological Survey (USGS) has many ongoing and recent water-related natural hazard activities in New England that can be used to help mitigate the effects of natural hazards in cooperation with other agencies. The themes related to potential hazards and the tools and science to better...
Cover of em_v13_n1; Source: New Mexico Bureau of Geology & Mineral Resources
2013, New Mexico Bureau of Geology and Mineral Resources (NMBGMR)
Recent drought conditions have caught the attention of many people, and a question commonly asked is: How bad is this drought? Is this the driest series of monsoon years, and are these the lowest flows the Rio Grande has ever experienced? Are these drought conditions an indication of climate change...
U.S. Drought Monitor map
2013, American Geosciences Institute (AGI)
A devastating drought currently affects almost half of the contiguous U.S., with conditions expected to persist or intensify in many of these areas, according to an outlook released this month by the National Integrated Drought Information System.
Cover image for WRI-10 ; Source: Iowa Geological Survey
2014, Iowa Geological Survey (IGS)
Groundwater recharge sources are precipitation, induced recharge from surface water, and seepage from glacial drift and terraces along the valley wall. A groundwater study conducted in 2011 calibrated an average annual groundwater recharge of approximately 8 inches within the alluvium near the ILRW...
Cover image for WRI-9 ; Source: Iowa Geological Survey
2014, Iowa Geological Survey (IGS)
This investigation evaluated groundwater resources of the alluvial aquifer located adjacent to the Rock River. Recent drought conditions prompted this study and can have a dramatic effect on groundwater resources. The primary objective of this study was to evaluate the aquifer to aid in future...
Cover image for WRI-6 ; Source: Iowa Geological Survey
2012, Iowa Geological Survey (IGS)
The groundwater flow model for the Floyd River aquifer near Sheldon was used to simulate a severe drought. Water level data during the summer of 2012 were used to help calibrate the model. Based on the mass balance calculations in the model, the percentage of water production supplied by the Floyd...
Cover image for WRI-10 ; Source: Iowa Geological Survey
2014, Iowa Geological Survey (IGS)
The Iowa Geological Survey completed a hydrogeologic evaluation of the water resources in the Ocheyedan River aquifer in Osceola, O’Brien, Clay and Dickinson counties in Iowa. The work was funded under the Water Plan Program of the Iowa Department of Natural Resources. The primary objective of this...