Width undulates between 20 m and 10 m wide, the length of the stand running along the river is about 50 m. Narrow strip of Populus fremontii running along SJ River. Eastern edge is Lost Lake campground. There is a lot of trampling - stands heavily used by humans (riddled with trails!) Populus fremontii occurs on Eastern edge of stand while Alnus rhombifolia occurs closer to the river.