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?
The indigenous people of Yosemite Valley have used fire as a tool for thousands of years. Fire was used to encourage the growth of plants used for basket making and to promote the growth of the black oak--a sun loving species--and a staple food source for American Indians from this region.