Geography of Berlin: Germany's Capital on the North European Plain

Berlin, the capital and largest city of Germany, sits on the North European Plain along the Spree River, roughly 70 km west of the Polish border. The city covers 892 km²—making it one of the largest cities in the European Union by area—and is home to about 3.7 million people.

Introduction

Berlin's geography is defined by its glacial origins. The flat landscape, sandy soils, numerous lakes, and river valleys were all shaped by the Scandinavian ice sheets that covered the region during the last Ice Age. Today, roughly one-third of Berlin is covered by forests, parks, gardens, rivers, and lakes, making it one of the greenest capitals in Europe.

Location & Setting

• Coordinates: 52.5200°N, 13.4050°E
• Elevation Range: 34–115 m above sea level
• Area: 892 km²
• Country: Germany

Berlin lies in a broad glacial valley (Urstromtal) carved by meltwater during the last Ice Age. The Spree River flows west through the city center, joining the Havel River in the western district of Spandau. The city's position in the Warsaw-Berlin glacial valley, a wide, flat corridor of sandy and gravelly soils, provides the dominant topographic character.

The terrain is remarkably flat, with the lowest point at 34 m in the southeastern marshes and the highest natural point at Teufelsberg (115 m), an artificial hill built from 26 million cubic meters of World War II rubble piled on top of a never-completed Nazi military-technical college. The Müggelberge hills in the southeast reach 115 m—Berlin's highest natural elevation.

Terrain & Landscape

• Glacial Valley: Warsaw-Berlin Urstromtal, flat and sandy
• Lakes: ~50 lakes within city limits
• Forests: Grunewald (3,000 ha), Tegeler Forest
• Rivers: Spree and Havel rivers with extensive floodplains

Berlin's landscape is a product of the Weichselian glaciation, which retreated roughly 10,000 years ago. The ice sheets deposited moraines (ridges of rocky debris), carved river valleys, and left behind the flat, sandy terrain that characterizes the city. The Barnim Plateau in the north and the Teltow Plateau in the south are slightly elevated morainic features that flank the central glacial valley.

Water is pervasive in Berlin's geography. Roughly 50 lakes dot the cityscape, including the Müggelsee (7.4 km², Berlin's largest), the Wannsee, and the Tegeler See. The Havel River widens into a series of lake-like expanses in western Berlin. The Grunewald forest (3,000 hectares), Tegeler Forest, and other wooded areas cover roughly 18% of the city's area, while parks and gardens account for another 12%.

Climate & Weather

• Climate Type: Oceanic/Continental transition (Köppen Cfb/Dfb)
• Average Summer Temp: 17–24°C
• Average Winter Temp: -1–4°C
• Annual Precipitation: ~570 mm

Berlin's climate is transitional between oceanic (western Europe) and continental (eastern Europe), with moderately warm summers and cold winters. The city sits far enough east to experience genuine continental cold in winter, with temperatures regularly dropping below -10°C during cold snaps, but Atlantic weather systems prevent the extreme cold experienced in Moscow.

Berlin is one of the drier European capitals, receiving only about 570 mm of precipitation annually. Snow falls on roughly 40–60 days per year, though persistent snow cover is becoming less common with climate change. The flat terrain and sandy soils mean Berlin is prone to both drought (the sandy soils drain rapidly) and localized flooding during heavy summer thunderstorms.

Rivers & Waterways

• Spree River: Main river through city center, 400 km total
• Havel River: Major river in western Berlin, wider and slower
• Landwehr Canal: Central canal, 10.7 km through the city
• Waterways Total: Over 180 km of navigable waterways

The Spree River enters Berlin from the southeast, flows through the historic center past the Reichstag and Museum Island, and joins the Havel at Spandau. Unusually for a major European river, the Spree has an extremely gentle gradient through Berlin—it barely drops 3 meters over 30 km—and its flow is so sluggish that it occasionally reverses direction during dry periods when water is released from upstream reservoirs.

The Havel River, wider and more lake-like than the Spree, flows through western Berlin creating a chain of lakes popular for swimming and sailing. Berlin has over 180 km of navigable waterways that once formed the backbone of the city's industrial transportation. The Landwehr Canal (10.7 km) and the Berlin-Spandau Ship Canal are the most important artificial waterways.

Geology & Soils

• Surface Geology: Glacial sand, gravel, and till
• Groundwater: High water table in the glacial valley
• Building Challenge: Sandy soils require deep foundations in many areas
• Teufelsberg: Artificial hill of WWII rubble, 115 m

Berlin's geology is almost entirely a product of glaciation. The surface consists of glacial deposits—sand, gravel, clay, and boulder clay (till)—lying over older Tertiary and Cretaceous sedimentary rocks at depth. The sandy soils that dominate the glacial valley are highly permeable, which affects building foundations and means the water table is often close to the surface, complicating underground construction.

The high water table and sandy soils required innovative engineering solutions for Berlin's U-Bahn (subway) system, much of which was built using cut-and-cover methods in the shallow sandy deposits. Teufelsberg, the artificial hill in the Grunewald forest, is one of Berlin's most unusual geographic features—a 115-meter hill constructed from an estimated 26 million cubic meters of rubble from the bombed city, piled over a partially built Nazi military academy.

Key Facts

• Berlin covers 892 km² and sits in a glacial valley carved during the last Ice Age.
• Roughly one-third of Berlin is covered by forests, parks, lakes, and rivers.
• The city contains about 50 lakes, with the Müggelsee (7.4 km²) being the largest.
• Berlin receives only ~570 mm of annual precipitation, making it one of the drier European capitals.
• The Spree River's gradient through Berlin is so gentle that the river occasionally flows backwards.

Fun Facts

• Berlin's highest point, Teufelsberg (115 m), is an artificial hill built from World War II rubble.
• The Spree River is so sluggish through Berlin that it sometimes reverses flow direction.
• Berlin has more bridges (~1,700) than Venice (~400), thanks to its extensive river and canal system.
• Sandy glacial soils drain so rapidly that Berlin faces drought risk despite being surrounded by water.

Final Thoughts

Berlin's geography is a story written by ice. The glacial valley, sandy soils, numerous lakes, and river systems that define the city were all shaped by Scandinavian ice sheets that retreated roughly 10,000 years ago. This glacial inheritance gives Berlin its remarkably green character—forests, parks, and waterways cover a third of the city—and its distinctive building challenges. As Germany's capital continues to grow, its glacial geography remains the foundation upon which everything is built.