Study the Scientist: A Hydrologist
Hydrologist Jim Roche manages Yosemite's water quality monitoring program and works to protect the park's water resources, including two Wild & Scenic rivers: the Merced and the Tuolumne rivers. He came to Yosemite from Death Valley National Park in 2003 and had worked previously in Yellowstone and Great Basin national parks, Big Cypress National Preserve, and as a Peace Corps volunteer in Gabon, Central Africa. (3 minutes 20 seconds)
View Yosemite's other "Study the Scientist" videos to watch resource rangers describe their jobs.
Did You Know?
In 1984, 83 miles of the Tuolumne River were added to the Wild and Scenic Rivers System by Congress with an amendment to the Wild and Scenic Rivers Act. This included 54 miles of the river within Yosemite National Park.