The U.S. Drought Monitor is a vital tool for understanding and mitigating the impacts of drought across the United States. Produced jointly by the National Oceanic and Atmospheric Administration (NOAA)U.S. Department of Agriculture (USDA)National Aeronautics and Space Administration (NASA)and the National Drought Mitigation Center (NDMC)this weekly map provides a comprehensive overview of drought conditions.
Drought is a complex and often insidious phenomenon, creeping in quietly but leaving devastating impacts in its wake. Unlike sudden storms, droughts develop gradually, affecting different regions and communities in diverse ways. The U.S. Drought Monitor captures this complexity by categorizing drought into various types and intensities, offering a nuanced picture of the nation’s water challenges.
The U.S. Drought Monitor: A Multifaceted Approach
The U.S. Drought Monitor uses a historical percentile ranking system to categorize drought conditions into five classifications: Abnormally Dry (D0)Moderate Drought (D1)Severe Drought (D2)Extreme Drought (D3)and Exceptional Drought (D4). These categories are based on a range of indicators, including precipitation, soil moisture, streamflow, and groundwater levels.
Each classification represents a different level of severity and impact. For instance, D0 (Abnormally Dry) indicates areas that are either heading into or recovering from drought, while D4 (Exceptional Drought) signifies catastrophic, landscape-altering impacts. This system allows policymakers, researchers, and the public to assess the current state of drought and its potential consequences.
Types of Drought
The U.S. Drought Monitor recognizes several types of drought, each with its unique characteristics and impacts:
- Meteorological DroughtCaused by a lack of precipitation and influenced by temperature and winds.
- Agricultural DroughtFocuses on precipitation shortages, soil moisture deficits, and evaporative demand, affecting crops and pastures.
- Hydrological DroughtRefers to the effects of rain and snow shortfalls on streamflow, groundwater, and reservoir levels.
- Ecological DroughtOccurs when prolonged water shortages create multiple stresses across ecosystems.
- Socio-economic DroughtDescribes the impact of drought on the broader economy, including agriculture, energy generation, tourism, and public health.
- Snow DroughtA period of abnormally low seasonal snowpack due to lack of precipitation or unusually warm temperatures.
Current Drought Conditions in 2026
As of June 2026, drought conditions have been particularly severe in the Western U.S., with record-low snowpack levels in states like Arizona, Colorado, Idaho, Nevada, New Mexico, Oregon, Utah, and Wyoming. The lack of snowmelt recharge has led to low stream flows and significant water supply concerns.
In the Southeast, reservoirs and lakes that were drawn down substantially over the past year are recovering more slowly than other drought indicators. Water supply concerns and fire danger remain significant, particularly in Florida, where Lake Okeechobee continues to lose more water than it receives. In the Plains, impacts have primarily affected winter wheat and forage production, with elevated fire danger in areas that have remained dry.
The most significant change occurred in Minnesota, where the cumulative effects of multiple dry years have affected much of the northern portion of the state, including the headwaters of the Mississippi River. Moderate drought expanded, and severe drought was introduced.
The Role of the U.S. Drought Monitor
The U.S. Drought Monitor plays a crucial role in drought mitigation efforts. It assists with disaster declarations and loan eligibility for farmers and ranchers, and it informs water supply planning and management. The map is produced through a joint partnership between the NDMC, NOAA, USDA, and NASA, with meteorologists and climatologists serving rotating shifts as the drought map’s lead author.
This collaborative effort ensures that the U.S. Drought Monitor provides a cohesive and accurate assessment of national drought conditions. By synthesizing complex and sometimes conflicting datasets, the monitor offers a vital public resource for understanding and addressing the challenges posed by drought.
