FIGURE 5.6
A. Continuous records of stage and discharge are collected by the US. Geological Survey at more than 7,000 gaging stations in the United States. Average velocities are determined by using measurements from several spots across the stream. This station is on the Rio Grande south of Taos, New Mexico. (Photo by E. J Tarbuck) B. Along straight stretches, stream velocity is highest at the center of the channel. C. When a stream curves, its zone of maximum speed shifts toward the outer bank.