River Valley
From Tibetan springs to the Arabian Sea, a 3,180-kilometer journey through mountains, plains, and ancient civilizations.
The Indus is a transboundary river of Asia and a trans-Himalayan river of South and Central Asia. Rising in the Tibet Autonomous Region of China as Sengge Zangbo, it flows northwest through the disputed Kashmir region, traversing Indian-administered Ladakh and Pakistani-administered Gilgit-Baltistan before bending sharply near the Nanga Parbat massif. The river then moves south-by-southwest through several provinces of Pakistan, eventually bifurcating to empty into the Arabian Sea near Karachi. With a total length of 3,180 km (1,980 mi), it drains an area of circa 1,120,000 km² and supports ecosystems ranging from temperate forests to arid countryside.
- Map Type
- Custom Map / DLC Content
- Primary Feature
- Central Navigable Waterway (Tidal bore suppressed by modern barrages)
Lore & Background
Geologically, the Indus headwaters flow along the Indus-Yarlung suture zone, marking where the Indian plate collided with the Eurasian plate approximately 50 million years ago. The river's course was continually diverted by rising Himalayas, defining the western limit of the mountain range. Historically, it sustained the Indus Valley Civilisation in the 3rd millennium BC, a major Bronze Age urban culture extending from northeast Afghanistan to northwest India and Pakistan. By the 2nd millennium BC, the Punjab region appeared in Rigveda hymns as Sapta Sindhu ('seven rivers') and in Avesta texts as Hapta Həndu. Early kingdoms like Gandhāra and Sindhu-Sauvīra arose here. In c. 515 BC, King Darius of Persia sent Scylax of Caryanda to explore the river, introducing it to the Western world.
In Their Own Story
The Indus begins at Sênggê Kanbab ('Lion's Mouth'), a perennial spring near Mount Kailash marked by Tibetan chortens. Though alternative sources exist—including a confluence with Gar Tsangpo or a lake northeast of Kailash identified in 2011—the traditional source remains the Lion's Mouth. The Zanskar River, its left-bank tributary in Ladakh, carries greater water volume than the Indus itself before their junction. Flows swell from Himalayan snowmelt and glaciers, creating a system that floods banks during monsoon months (July to September) while diminishing in winter. In 1816, an earthquake shifted its course westward; as of 2011, floodwaters still breach into the Rann of Kutch. At Mithankot, it joins the Panjnad River—formed by the Chenab, Jhelum, Ravi, Beas, and Sutlej—and briefly becomes the Satnad ('seven rivers') before entering its delta south of Thatta.
Reader's Guide
The Indus supports Pakistan's economy as a key water source for Punjab province, which produces most national agriculture. Its five tributary rivers—Jhelum, Chenab, Ravi, Beas, and Sutlej—give the region its name, meaning 'land of five rivers.' The river feeds heavy industries and supplies potable water across Pakistan. Annual flow averages 175 km³/a (5,500 m3/s), ranking it among the world's 50 largest by volume. Right-bank tributaries include Shyok, Gilgit, Kabul, Kurram, and Gomal; left-bank ones are Zanskar (mountains) and Panjnad (plains). The river exhibits a rare tidal bore and passes through gorges 4,500–5,200 meters deep near Nanga Parbat. Dams like Tarbela Reservoir regulate flow before the Kabul River joins at Attock.
Did You Know?
- The Indus is one of the few rivers in the world to exhibit a tidal bore, though modern barrages have largely eliminated this phenomenon.
- In c. 515 BC, Scylax of Caryanda became the first Greek subject sent by King Darius of Persia to explore the river.
- Over 1,052 settlements of the Indus Valley Civilisation have been found, with the vast majority located within the broader Indus basin rather than strictly on the main river or its immediate tributaries.
- The river's name 'Indus' derives from Old Persian Hindu, which shares a root with Sanskrit sindhu meaning 'river'.
- A 2011 Chinese remeasurement suggested an alternative source: a small lake northeast of Mount Kailash.
Frequently Asked Questions
Who is River Valley?
River Valley is not a character or entity within the game lore, but rather the name of a specific playable map. It serves as one of the standard environments included in the base version of Cities: Skylines.
What are River Valley's powers or role?
As a location setting, it possesses no magical abilities or narrative agency beyond providing terrain for construction. Its primary function is to offer a versatile sandbox for players to design and manage their own municipalities.
How does River Valley's story end?
There is no predefined storyline or ending associated with this map since the game operates as an open-ended simulation. Players determine the fate of their city through their own planning choices rather than scripted events.
Why is River Valley important to new players?
It acts as a foundational tutorial ground because its flat terrain simplifies early road and zoning placement. This accessibility allows beginners to focus on learning core mechanics without struggling against difficult geography immediately.
What are the main geographical features of this setting?
The map is defined by expansive flat plains that are cut through by a wide, meandering river. This central waterway creates natural boundaries that require strategic bridge building for effective traffic flow.