There are many lakes there, 38 of which have an area larger than 10 hectares.
The lowest place in the oblast are depressions - polders located in the northern part of the oblast, near the border with Lithuania, on the Curonian Lagoon, in the Slav region.
The highest hill is 242 m above sea level and is located less than a kilometer from the border with Poland (Szeskie Hills).
