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Media Advisory: Briefing on Great Lakes Basin Water Availability and Use

Media Advisory: Briefing on Great Lakes Basin Water Availability and Use

What: The U.S. Geological Survey will brief Congress, the media and the public on a recently completed Great Lakes Basin water availability study.

Though the Great Lakes are the largest freshwater system on Earth, the basin has the potential for local shortages, according to this new USGS assessment. Is there enough water to meet future demand from municipal, agricultural, industrial, ecosystem and recreational uses?

With the support of Congress, the U.S. Geological Survey is assessing the availability and use of the Nation’s water resources. A clearer understanding of water availability status and trends will improve our ability to forecast the balance between water supply and demand for future uses.

Strategies for delivering information about water availability and use and methods to evaluate water resources that were developed as part of this pilot study could be applied to the full-scale implementation of a national water assessment.

More information about this study is available online.

Who: Howard Reeves, Research Hydrologist, U.S. Geological Survey
Tim Eder, Executive Director, Great Lakes Commission
Bill Werkheiser, Associate Director for Water, U.S. Geological Survey
John Tubbs, Deputy Assistant Secretary for Water & Science, U.S. Department of the Interior

Where: Capitol Visitor’s Center, SVC-215, Washington, D.C.
The Capitol Visitor Center is on the east side of the U.S. Capitol Building. Once inside, follow signs to the Senate meeting rooms.

When: Friday, February 18, 2011
10:00 a.m.

USGS Newsroom

More information

Parameter Value Description
Magnitude mb The magnitude for the event.
Longitude ° East Decimal degrees longitude. Negative values for western longitudes.
Latitude ° North Decimal degrees latitude. Negative values for southern latitudes.
Depth km Depth of the event in kilometers.
Place Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 1970-01-01 00:00:00 Time when the event occurred. UTC/GMT
Updated 1970-01-01 00:00:00 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status Indicates whether the event has been reviewed by a human.
Tsunami This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG A number describing how significant the event is. Larger numbers indicate a more significant event.
Network The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type The method or algorithm used to calculate the preferred magnitude for the event.
Event Type Type of seismic event.
Event ID Id of event.
Event Code An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS A comma-separated list of event ids that are associated to an event.

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