To the right, Leah gets Alden and Cory set straight. Below, a brief rest under the bridge.

Some are prepared to meet the challenges of the stream. (above)

A view downstream.

(Right) Jonathon & Sarah work upstream. Looks like the water's flowing backward here. How annoying.

Above, the intrepid Leah bushwacks for a wary class.

Kate and Cory get the data, while Alden, above, calculates Q.

Others are not so prepared. (Left)