25.6 miles of river in the Angeles National Forest
The West, North and East Forks of the San Gabriel River drain the largest watershed in the mountain range and provide thirsty downstream residents with clean drinking water. The upper West Fork is traversed by the Gabrieleno National Recreation Trail. The East Fork provides trail access to the Sheep Mountain Wilderness. All three forks are popular destinations for thousands of visitors who picnic, wade, camp, hike, and fish. The forks are also “Areas of High Ecological Significance” because they support rare populations of native fish, including the endangered Santa Ana Sucker.