Puerto Rico DroughtWatch
Puerto Rico Drought Information
A drought is a period of drier-than-normal conditions that results in water-related problems. When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases. If dry weather persists and water-supply problems develop, the dry period can become a drought.
Hydrologic Conditions of Selected Reservoirs in Puerto Rico
Information for selected reservoirs
Groundwater Levels of Selected Observation Wells in the South Coast of Puerto Rico
Information for selected observation wells
Levels of Lake/Reservoirs in Puerto Rico
Water levels of Reservoirs in Puerto Rico
The USGS provides hydrologic data collection to monitor and evaluate the effects of drought on:
Hydrologic studies can support successful planning and science-based decision-making by water managers who must address complex water-management issues and competing interests during periods of rainfall deficiency. Hydrologic studies and research also can help decision-makers prepare for future climate change scenarios including extended droughts.
Map of below normal 28-day average streamflow compared to historical streamflow for the day of year
This map (from USGS's National Drought Watch Web site) shows the 28-day average streamflow conditions in hydrologic units. Thus, the map shows conditions adjusted for this time of the year. The colors represent 28-day average streamflow percentiles for the day of the year. USGS sites having at least 30 years of record are used. The data used to produce this map are provisional and have not been reviewed or edited.
Explanation of the Percentiles classes
A percentile is a value on a scale of one hundred that indicates the percent of a distribution that is equal to or below it. See more
Puerto Rico DroughtWatch Maps