Top: Students (left to right) Jackson Trcka, Anthony Edgington, Laurel He, Baley Jones And Suvan Cabraal; Andrew Denham (left) and Christian Roumelis measure stream flow in the Valles Caldera. Middle: Students measure flow in South Onion Creek at the White Family Outdoor Learning Center in Dripping Springs. Bottom: Students use an acoustic doppler velocimeter to measure flow of the Jemez river in the Valles Caldera, New Mexico.