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USGS science for a changing world logo
January 22, 2001

A new geologic map of surficial deposits in the nine-county San Francisco Bay region that can be used to evaluate earthquake hazards has been released in digital form by the U.S. Geological Survey in Menlo Park.

USGS science for a changing world logo
January 19, 2001

Estimating streamflows in areas where there are no gages once took days but now only takes minutes, thanks to scientists at the U.S. Geological Survey, who have developed a user-friendly streamflow-estimating system called "Streamstats."

USGS science for a changing world logo
January 17, 2001

A small earthquake, preliminary magnitude 2.5 according to the U.S. Geological Survey, occurred between the southern tip of Manhattan and Queens, near Newark, New Jersey, at 7:34 a.m. Eastern Standard Time on January 17. Shaking was felt in New York City. The USGS has received no reports of damage at this time.

USGS science for a changing world logo
January 17, 2001

Metal concentrations were found to be elevated in riverbed sediments and fish tissue samples at sites downstream from significant natural mineral sources associated with hard-rock mining activities in the Clark Fork and Spokane River basins, according to scientists with the U.S. Geological Survey (USGS), Department of the Interior.

USGS science for a changing world logo
January 16, 2001

In conjunction with the seventh anniversary of the 1994, 6.7 Northridge earthquake, the U.S. Geological Survey, in cooperation with the Southern California Earthquake Center (SCEC) and the National Science Foundation (NSF), has produced a two-page fact sheet that explains how geologic conditions in the Los Angeles basin affect the amount of shaking experienced by various areas of the basin.

USGS science for a changing world logo
January 5, 2001

 

In 2000, the average streamflow into the Chesapeake Bay was 42.2 bgd (billion gallons per day), which is 16 percent below the long-term average, according to hydrologists at the U.S. Geological Survey (USGS) in Baltimore, Maryland. 

USGS science for a changing world logo
January 2, 2001

Nitrous oxide is an important atmospheric trace gas that contributes to the greenhouse effect and the destruction of ozone. Researchers hypothesize that one important source of atmospheric nitrous oxide is ground water, yet few studies have tested this hypothesis.

USGS science for a changing world logo
December 21, 2000

DNA sequence data revealed a deep genetic split between common ravens from the southwest United States compared to the rest of the world, according to a journal article in the December 22 issue of the Proceedings of the Royal Society of London, Biological Sciences.

USGS science for a changing world logo
December 19, 2000

The effects of selenium entering the San Francisco Bay-Delta Estuary (Bay-Delta) are forecast in a model released today by the U.S. Geological Survey (USGS). 

USGS science for a changing world logo
December 18, 2000

Originating along riverbanks in Brazil a plant called Christmasberry, or Brazilian peppertree, is used to deck halls and homes in this holiday time of year. Earlier this month, Christmasberry was even offered for sale at a "swap-meet" in Kahului, Maui, Hawaii, where it was labeled "Maui mistletoe."

USGS science for a changing world logo
December 7, 2000

Neither a tree-dweller nor a night bird, and roughly the size of a chicken, the Gunnison sage-grouse is not a particularly secretive bird yet just recently has it been identified as a new species of bird. 

USGS science for a changing world logo
December 7, 2000

A minor earthquake, preliminary magnitude 3.9 according to the U.S. Geological Survey, occurred about 5 miles west of Evansville, Indiana at 8:08 am local time (Central Standard Time). The earthquake was felt in parts of southern Indiana and western Kentucky. The USGS has received no reports of damage at this time.