Krzna

The Krzna is a river in eastern Poland, and a left tributary of the Bug. The river is long and its watershed area is . The Krzna flows through Poland's Lublin Voivodeship. It arises from the connection of two water jets flowing in the Łuków Forest: Northern Krzna and Southern Krzna which is considered to be the beginning of the Krzna. The river empties into the Bug near the town of Terespol and the village of Neple, close to the Belarus border near, the city of Brest. A canal connects it to the Wieprz.

==The Northern Krzna== The Northern Krzna is a short river which connects with the Southern Krzna in the town of Międzyrzec Podlaski. Similarly to the Southern Krzna, the river flows from Łuków Forests, center of which was formerly inaccessible Jata marsh and nowadays it is a wildlife reserve of the same name. The Northern Krzna is shorter than the Southern Krzna. However, its watershed area is bigger. During the Pleistocene epoch, the valley of the Northern Krzna was one of the routes of draining meltwater to the East. Nowadays, it drains the northern area of Łuków Plain, particularly the remainings of a sandur. From the Jata reserve to the village of Gołaszyn, the Northern Krzna is on the terrain of Łuków Park of Protected Landscape.