TheNarew ([ˈnarɛf];Belarusian:Нараў,romanized: Naraŭ;Lithuanian:Narevas orNaruva) is a 499-kilometre (310 mi) river primarily in north-easternPoland. It is a tributary of the riverVistula. The Narew is one of Europe's fewbraided rivers, the term relating to the twisted channels resembling braided hair. Around 57 kilometres (35 mi) of the river flows through westernBelarus.
The portion of the river between the junctions with theWestern Bug and theVistula is also known as the Bugonarew, Narwio-Bug, Narwo-Bug, Bugo-Narew, Narwiobug or Narwobug. At theconfluence nearZegrze the Bug is 1.6× longer, drains a 1.4× larger basin, and has a slightly greater averagedischarge (158 m³/s atWyszków vs 146 m³/s atPułtusk for the Narew, both ~25 km above the junction). Thus the Bugonarew was often considered part of the Bug river and the Narew a righttributary of the Bug.
On December 27, 1962, Prime MinisterJózef Cyrankiewicz abolished the nameBugonarew soon after theZegrze Reservoir was constructed.[3] Since then the river Bug has officially been considered part of the river Narew's system, with the Bug being a left tributary of the Narew (by this classification, the River Narew is a right tributary of the River Vistula). The name Bugonarew however is still used in some areas along its course, especially by the inhabitants of local towns, such as Pułtusk.
Confluence of the Narew andVistula atModlinThe valley of the river Narew taken from the high river bank at Paulinowo-Dzbądz (close to city Różan)Marshes on the braided channels of the Narew's floodplains, nearPańki andRzędzianySiemianówka reservoir near Bondary village, gmina Michałowo, podlaskie,Poland
On August 23, 1939, the Soviet Union and Germany signed theMolotov–Ribbentrop Pact, agreeing to divide Poland along the Narew, Vistula (Wisła), and San rivers.
On September 6, 1939, Polish military forces attempted to use the Narew as a defense line against German attack during the Germaninvasion of Poland. This was abandoned the next day in favor of theBug as German forces had already penetrated the defenses.
TheBattle of Wizna was fought along the banks of the river between September 7 and September 10, 1939, between the forces of Poland and Germany during the initial stages of Invasion of Poland. Because it consisted of a small force holding a piece of fortified territory against a vastly larger invasion for three days at great cost before being annihilated with no known survivors, Wizna is sometimes referred to as a Polish Thermopylae in Polish culture.
On September 17, 1939, the USSR invaded Poland. By 28 September, the Soviet Army had reached the line of the rivers Narew, Bug River, Vistula and San – completing the division of Poland as negotiated in advance.