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What is a Lake Gage?

LAKE GAGES AND STREAMFLOW GAGES

Ashuelot River gage house
Gage on a bridge
Close-up view of gage on bridge
Contoocook River gage house
Spicket River gage box
Clough State Park gage house

GAGING STATIONS VARY GREATLY IN APPEARANCE.    CLICK ON THESE EXAMPLES TO SEE LARGER PHOTOS.

A gage (also spelled 'gauge') is an instrument that measures and records the height of a lake or the streamflowlook up 'streamflow' in glossary of a river over time. The U.S. Geological Survey (USGS) operates more than 7,000 gages across the country, including about 40 in the Lake Champlain Basin. The USGS selects a suitable site along a river or lake and constructs a shelter to hold the equipment. The shelter and the equipment it contains are referred to as a gaging station. The gaging station can be located over the water, on the shore, or attached to a bridge over a large river. A gaging station can also include equipment that measures water-quality conditions such as temperature, pH, dissolved oxygen, and dissolved chemicals, or weather conditions such as air temperature, precipitation, and wind speed.

FURTHER USGS REFERENCE MATERIAL

Skateboarder asking 'So what's a little rain?' (Click to follow link to More information on surface-water (rivers, streams, runoff, lakes, streamflow, floods, and more).

Common water measurements (temperature, pH, specific conductance, etc.)

Real-time gaging station map for all of Vermont and New Hampshire

Contoocook River Gage in New Hampshire

 

Click to view example graph

U.S. Department of the Interior, U.S. Geological Survey
URL: http://nh.water.usgs.gov/echo_gage/whatis.htm
Page Contact Information: gs-w-nhpem_webmaster@usgs.gov
Page Last Modified: January 3, 2013

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