Semarang
Geography

Semarang is located on the northern coast of Java. The city of Semarang is one of the most important cities located on the north coast of Java and is the main hub connecting Jakarta and Surabaya, and cities in the southern interior of Java Surakarta and Yogyakarta. Semarang City has a height ranging from 2 m (6.6 ft) below sea level up to 340 m (1,120 ft) above sea level with a slope of 0%–45%. Semarang City is a city that has a unique topographic condition in the form of a narrow lowland area and hilly areas extending from the west side to the east side of Semarang City. The city is located about 558 km (347 mi) east of Jakarta and 312 km (194 mi) west of Surabaya.

Lowland areas in Semarang City are very narrow. The lowland area in western Semarang only has a width of 4 km (2.5 mi) from the coastline, while in the eastern Semarang, the low-lying area has a width of 11 km (6.8 mi) from the coastline. This lowland area is a flood plain from the large rivers that flow in Semarang City, such as Kali Garang (West Flood Canal), Pengkol River, and Bringin River. This low-lying area stretches on the northern side of Semarang and covers almost 40% of the total area of Semarang. This lowland area is known as the lower town (Semarang Ngisor), as well as the center of the city's economic activity. Under these conditions, the lower city area is often hit by annual flooding and its peak during the rainy season. In a number of regions, especially North Semarang, floods are sometimes also caused by overflowing sea tides (tidal floods). The hilly area in Semarang stretches on the south side. These hills are part of a series of northern Java mountain ranges that stretch from Banten to East Java. The hilly area in the city of Semarang is known as the upper city (Semarang Dhuwur). This hilly region is also the upstream area of the big rivers that flow in the city of Semarang. The upper city area is also near Mount Ungaran.
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