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"By integrating a range of federal and state data to communicate the extreme circumstances of the water shortage in California and the southwest, USGS is providing for public use a rich and interactive collection of drought related information. "Ultimately, the initiative will allow us to better communicate the nation's water resources status, trends and challenges based on the most recent monitoring information," said Mark Sogge, USGS Pacific regional director. The Open Water Data Initiative promotes these goals with an initial objective of presenting valuable water data in a more user friendly, easily accessible format. White House open data policies continue to provide opportunities for innovation at the nexus between water resource management and information technology. View the map of California to see how reservoir, snowpack, precipitation, and other water indicators compare to historical averages. Data source: Precipitation data shown here are Parameter-elevation Regressions on Independent Slopes Model (PRISM) data acquired via a licensing agreement with Oregon State University. "The drought affects streamflow across the state, which leads to reduced reservoir replenishment as well as groundwater depletion." Precipitation (or Temperature) at Regional Scale. "USGS is determined to provide managers and residents with timely and meaningful data to help decision making and planning for the state's water resources," said Nate Booth, chief of USGS Water Information. by integrating several key drought indices on precipitation and moisture into one objective, computer-generated map. In January, California Governor, Jerry Brown, declared a State of Emergency to help officials manage the drought. The Multi-Indicator Drought Index (MIDI) looks at current drought conditions across the U.S. Additionally, California’s water use profile is summarized.Ĭalifornia has been experiencing one of its most severe drought in over a century, and 2013 was the driest calendar year in the state's 119-year recorded history.
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Current streamflow collected at USGS gaging stations is graphed relative to historic averages. The regional climate is characterized by a distinct dry season (approximately May to September) and wet season (October to April) defined by a few large precipitation events. The connection between snowpack and reservoir levels is also displayed interactively. Drought in California and Nevada is a common occurrence that can last for multiple years. However, available water decreases overall as the drought persists. Reservoir levels can be seen to respond to seasonal drivers in each year. The drought visualization page features high-tech graphics that illustrate the effect of drought on regional reservoir storage from 2011-2014.įor the visualization, drought data are integrated through space and time with maps and plots of reservoir storage. Geological Survey developed the interactive website as part of the federal government's Open Water Data Initiative. Heavy rain and snow caused landslides and flooding in parts of California on Saturday, shutting down two major highways as another atmospheric river. View Media Details Multi-colored map showing drought coverage of California with Exceptional Drought listed in the majority of the state. Sources/Usage: Some content may have restrictions.