A Price Double A Current Meter looks like a yellow submarine, with several spinning cups on top of it, connected to a meter. The U.S. Geological Survey uses it to measure water velocity-and it’s gotten a good amount of use over the past several weeks. Ken Fossum is the Acting Field Chief for the USGS Tempe office.
How The US Geological Survey Measures Water Velocity
(Photo By Mark Brodie/KJZZ)