The lake is located just off State Route 243, about 7 mi (11 km) northwest of the unincorporated community of Pine Cove.

[1] In 1980, the US Forest Service planted a giant sequoia sapling in the picnic area on the northern shore of Lake Fulmor.

[1] The lake is surrounded by an incense cedar-Douglas fir forest and hosts an artificial grove of seven giant sequoias along its northern shores, the largest of which stands 67 ft (20 m) tall.

[1] The environmental conditions of the San Jacinto Mountains mimic those of the Sierra Nevada, allowing the giant sequoia trees of Lake Fulmor Grove to naturally propagate.

[2] The lake and its surroundings are home to a wide variety of native wildlife, including mule deer, ground squirrel, Steller's Jay, and the California tree frog.