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File: climate-data-land-stream-gauge.png

Ruler sticking out of flowing water, rainbow over an instrument with an antenae next to water

Image caption

On the left, a staff gauge measures the height of flowing water. Photo by Chris Council, Aspen Daily News from Aspen Journalism story, New stream gauge on Castle Creek installed.  On the right, an automated streamgage measures the distance to the water's surface and sends the information to a satellite. Photo by Robert Swanson.