Geography and urban development of Dresden past 60 years has made Dresden the fourth largest urban area in Germany after Berlin, Hamburg, and Cologne. The most important river in Dresden is the Elbe river, the only navigable body of water to flow through the city. There are also a number of tributaries such as the river Weißeritz. The nearest German cities are Chemnitz (80 km to the southwest), Leipzig (100 km to the northwest) and Berlin (200 km to the north). The Czech capital Prague is about 150 km to the south; the Polish city of Wrocław is about 200 km to the east. There are
Hamburg Police the development up to the North Sea flood of 1962 and the following incorporation of the police into the State Ministry of the Interior. On 3 May 1945, the first order for the police force in Hamburg by the "609 Detachment Hansestadt Hamburg", the military administrative government for Hamburg, was to stand by armed. On 7 May 1945, precise regulations for the German police offices were published. In 1945 head of the police was the British Colonel Michel O'Rorke, chief of the "Public Safety Branch". At the beginning of May 1945, the police force had 1,720 active officers, 3,456 reserve