The lake system lies in the
Yeravna Depression, at the southern end of the
Vitim Plateau. It includes 6 large lakes and several smaller ones aligned in a roughly NE/SW direction for about . The catchment area of the lake system is located in a
forest steppe zone.
Bolshoy Yeravna (Big Yeravna) is the largest lake of the group, followed by neighboring
Maly Yeravna (Small Yeravna). Other lakes of the system include
Sosnovo,
Khaimisanov and
Bolshoy Goluboy —with Goluboy and Maly Goluboy close to it— in the southern cluster, known as "Yeravna Lakes" (). There are many small lakes further to the southwest. In the northern section lie
Gunda,
Eksend (Эксенд),
Arshan,
Khynter (Хынтер),
Khorga and
Malaya Khorga, as well as
Isinga, the northernmost of the group.
Hydrography When the water levels are high the Yeravna lakes are connected with each other by intermittent channels. The outlet of the lake area is via the Khorga lakes to the northeast through the Kholoy, a small, shallow tributary of the
Vitim River flowing from
Isinga lake at the northeastern end. ==See also==