The Department of Geosciences and the Department of Ecosystem Science and Sustainability offer a Ph.D. program in Earth Sciences. The degree program has formal specializations in Watershed Science and in Geosciences. Faculty members from the Department of Ecosystem Science and Sustainability, Department of Forest and Rangeland Stewardship, and the Department of Geosciences will advise students in the Watershed Science specialization.  For further information see the relevant Geosciences Department web page.


Ph.D. students must complete 72 semester credits beyond those required for the B.S. degree. They must satisfy a breadth requirement by:

Taking a six-credit upper-division or graduate-level course sequence outside of the student’s discipline. Most students will take their breadth requirement courses outside of their department.

At least 10 credits beyond the master’s degree must be earned in regular courses numbered 500-level or above.

A minimum of 72 credits are required to complete this program.