Green Valley Lake is located at an elevation of 6,800 feet in the San Bernardino National Forest. It is known for its rainbow trout fishing, with stocks occurring throughout the colder months. While 10-12 inch trout are most common, some trophy-sized giants are caught yearly. The lake also holds other species including largemouth bass, crappie, and bluegill.

Although Green Valley is generally peaceful, it can get crowded on summer weekends, disrupting its serene atmosphere. Nearby is a campground, and the lake area provides amenities such as rowboat, kayak, and paddle-boat rentals, as well as bait and a convenience store. Note that private boats and motorized vessels are not allowed. Both day use and daily fishing come with a fee.