The James San Jacinto Mountains Reserve, a unit of the University of California Natural Reserve System, is a 29-acre (120,000 m2) ecological reserve and biological field station located at an altitude of 5,200 feet (1,600 m) in a wilderness area of the San Jacinto Mountains near Lake Fulmor in Riverside County, California, United States.

[3] In addition to acting as a protected natural area for teaching and research in the sciences, it is also available as an engineering testing ground for various sensor-related and ecosystem monitoring technologies.

Over the internet, researchers, students and the interested public may unobtrusively visit and view nature via a webcam observatory, which includes an interactive robotic camera.

The Director of the Reserve is Dr. Jennifer Gee, who received her Ph.D. from Princeton University, in the field of Ecology and Evolutionary Biology.

[4] Overnight accommodations for researchers and school groups may be made for the on-site Trailfinders Lodge.