Gardner River Drainage Professional Review and Guide
"Both the Gardner River and Gardiner, the North Entrance to Yellowstone National Park, take their name from mountain man Johnson Gardner, who trapped the area around 1830. The spelling for the town may have been derived from the way Jim Bridger pronounced Gardner’s name, and until 1959 the river also appeared on maps as “Gardiner.” Fitting our image of the trapper, the river is a rough-and-tumble stream rising on Electric Peak and other mountains of the Gallatin Range. Running southeasterly through Gardners Hole, the river picks up a number of tributary streams.
Turning abruptly onto a northerly course, the river drops through the Sheepeater Canyon, over Osprey Falls, past Mammoth and the park headquarters, and enters the Yellowstone River at Gardiner. This eTrail contains information on Upper Gardner River, Fawn Lake, Indian and Panther Creeks, Obsidian Creek, Winter Creek and Trilobite Lake, Grizzly Lake and Straight Creek, Gardner River (Sheepeater Canyon Reach), Glen Creek, Joffe Lake, Lower Gardner River, and Lava Creek."