Although more than 20 rivers flow into the sea, mostly from the north, two of them, the Don and Kuban rivers, account for more than 90% of water inflow. The contribution of the Don is about twice that of the Kuban. The Kuban delta is located at the southeast, on the east side of the Kerch Strait. It is over 100 km long and covers a vast flooded area with numerous channels. Because of the spread, the delta has low contrast in satellite images, and is hardly visible in the map. The Don flows from the north into the large Taganrog Bay. The depth there varies between 2 and 9 metres, while the maximum depth is observed in the middle of the sea.