The Lower Oder Valley International Park is a shared German-Polish nature reserve. It comprises the western banks of the Oder (Polish: Odra) river within the Uckermark district in the German state of Brandenburg as well as the steep eastern banks in the Gryfino and Police counties of the Polish West Pomeranian Voivodeship further north.
The German part of the core area is the Nationalpark Unteres Odertal (Lower Oder Valley National Park). The Polish part of the core area is the Park Krajobrazowy Dolina Dolnej Odry (Lower Odra Valley Landscape Park). The area comprises 165 km² (Germany 105 km², Poland 60 km²); together with adjoining nature reserves in Germany and Poland the total area is 1,172 km². By decision of the German-Polish Environmental Council in 1992 the German, Polish and Brandenburg environment ministers as well as the voivode of Szczecin created the Lower Oder Valley International Park. The flat western shore of the Oder features several levees, which in order to control the water level and to prevent highfloods are regularly opened in winter and spring. The water flows freely into extensive floodplains covered until April when the dikes are closed again and the remaining water is drained. These plains are habitats for animals rare in the region including the Black Stork, theAquatic Warbler, the Corn Crake, the European Otter and the European Beaver as well as for plants like the submediterranean Pubescent Oak.