Dolgoye Lake is located 75 km from the mouth of Storozh River, 574 meters high. It formed at the bottom of a wide depression stretching from South-West to North-East. In the North-eastern end it is lined with mountains a few hundred meters high. High moraines adjoin the southern extremity of the lake. The sides of the mountains and moraines are covered with dwarf Siberian pine trees.
The lake is no more than 4 meters deep. The bottom of the lake still shows the bed of a stream and alder bushes. The absence of earthwork further shows the young age of the lake. Several species of salmon from the Pacific go up Storozh River. The river and the lake are used for spawning.