An instrument that measures some property in the environment, like temperature, wind speed or precipitation. It is used interchangeably with sensor. We spell it g-a-g-e because that's how the USGS spells it
The Flood Control District of Maricopa County, Glossary of Flooding Terms, AZ, USA 2009. http://www.fcd.maricopa.gov/Education/glossary.asp x, (ND/ Flood - Amer) {477}