- Yields: Nothing
- Movement needed: 3 MPs to cross
- Defense provided: +5 bonus against melee attacks coming from across the river (Ranged attacks are unaffected)
- Additional traits:
- Provides Fresh Water to nearby tiles
- Can provide Fresh Water via an Aqueduct
- Cities founded next to it can construct the Water Mill building
- May contain Floodplains areas which inundate during Flood disasters, causing destruction and killing Citizens from nearby cities.
- Cities founded next to it can construct the Dam district to mitigate flooding.
- The Lumber Mill Improvement receives a +1 Production bonus if next to a River
- +1 Appeal to nearby tiles
- Provides +2 Adjacency bonus to Commercial Hub Districts
- River Goddess Pantheon: +1 Amenity for cities which have a Holy Site District near a River.
Rivers are invaluable for city settlement, as they supply fresh water and enable the Water Mill (and various wonders) to be built. With it, any city may get a good start at growing and producing as early as the Ancient Era! An Aqueduct built next to it will also supply a nearby city with Fresh Water for Housing purposes.
But rivers do more than that. They provide a bulwark against invasions for any commander that knows how to use them; they turn Deserts into paradise by enabling the Floodplains feature; elsewhere they allow improved farming with the Civil Engineering Civic; they improve commerce thanks to the additional transport opportunities they provide for merchants.
Finally, you may use a River as means of finding the nearest sea in your early exploration. Every river flows from its source to either another river, or to a large body of water - just follow the flow direction.
Gathering Storm brings a whole new level of strategy to rivers: they are now areas of one of the brand new disasters: the flood. Pay attention to the areas marked as Floodplains (they can appear now not only in deserts, but also in plains and grassland areas) - they are the ones which will flood during disasters! You can still develop them normally, but floods may damage, or even outright destroy your improvements and districts placed there! However, they will also enrich the soil, adding Food and/or Production to their base yields, and making them potentially even more useful than before! So, developing floodplains becomes a calculated risk which may bring lots of pain or rich rewards.
Gathering Storm introduced a new mechanic in which Rivers can have different names based on the first civilization that finds them. Below is a list of river names and, where applicable, the civilization/s they are assigned to.
|Abukuma River||Japan||The 2nd longest river in the Tōhoku region and the 6th longest river in Japan|
|Achelous River||Greece||It formed the boundary between Acarnania and Aetolia. In ancient times its spirit was venerated as the river god Achelous.|
|Agno River||None||A river on the island of Luzon in the Philippines. It is one of the largest river systems in the country.|
|Alazani River||Georgia||The main tributary of the Kura in eastern Georgia. Part of its path forms the border between Georgia and Azerbaijan.|
|Amazon River||Brazil||The largest river by discharge volume of water in the world|
|Amiskwasîpi||Cree||Translated to English as "Beaver River" from Cree. Flows east through Alberta and Saskatchewan and north into Lac Île-à-la-Crosse on the Churchill River which flows into Hudson Bay.|
|Amnok River||Korea||AKA "Yalu River". A river on the border between North Korea and China.|
|Amu Darya River||None||Historically known by its Latin name "Oxus". A major river in Central Asia.|
|Amur River||China, Russia||The world's 10th longest river, forming the border between the Russian Far East and Northeastern China|
|Apurimaq Mayu||Inca||Translated into English as "Apurímac River" from Quechua. It flows generally northwest past Cusco and is twice as deep as the Grand Canyon.|
|Aras River||Ottomans||The river that flows along the borders between Turkey and Armenia, Turkey and the Nakhchivan area of Azerbaijan, between Iran and both Azerbaijan and Armenia, and finally through Azerbaijan to the Kura River.|
|Arkansas River||America||A major tributary of the Mississippi River. The 6th longest river in the United States, the 2nd longest tributary in the Mississippi–Missouri system, and the 45th longest river in the world.|
|Arno River||Rome||A river in the Tuscany region of Italy. It is the most important river of central Italy after the Tiber.|
|Atbarah River||Nubia||A river in northeast Africa rises in northwest Ethiopia, north of Lake Tana and west of Gondar. Referred by ancient authors as the Astabaras River|
|Athabasca River||Canada||A river that originates from the Columbia Glacier of the Columbia Icefield in Jasper National Park in Alberta, Canada|
|Atoyac River||Aztec||A river in Oaxaca, Mexico. The Atoyac flows into the Rio Verde which empties into the Pacific near Laguna Chacahua, in Lagunas de Chacahua National Park, west of Puerto Escondido.|
|Awriq Mayu||Inca||Translated into English as the "Marañón River" from Quechua. The principal or mainstem source of the Amazon River.|
|Ayung River||Indonesia||The longest river on the Indonesian island of Bali. The river is famous for white water rafting.|
|Bahr Yussef||Egypt||A canal which connects the Nile River with Fayyum in Egypt. In ancient times, it was known as Mer-Wer (the Great Canal). This project was built during Amenemhat III's rule. The Arabic name refers to the prophet Yusuf, the Quranic counterpart of the Biblical Joseph|
|Balsas River||Aztec||A major river of south-central Mexico. The basin flows through the states of Puebla, Morelos, Guerrero, and Mexico. The river flows through the Sierra Madre del Sur, and empties into the Pacific Ocean at Mangrove Point, adjacent to the city of Lázaro Cárdenas, Michoacán|
|Bengawan Solo River||Indonesia|
|Columbia River||Canada, America|
|Danube River||Hungary, Germany|
|Don River||Russia, Scythia|
|Euphrates River||Arabia, Sumer|
|Great Zab River||Sumer|
|Haliacmon River||Macedon, Greece|
|Jordan River||Phoenicia, Arabia|
|Maipo River||Mapuche, Inca|
|Maule River||Mapuche, Inca|
|Meuse River||Netherlands, France|
|Nile River||Nubia, Arabia, Egypt|
|Oder River||Poland, Germany|
|Powinigow Sipi||Cree, Canada|
|Rhine River||Netherlands, Germany, France|
|River Great Ouse||England|
|Saint Lawrence River||Canada, America|
|São Francisco River||Brazil|
|Se Kong River||Khmer|
|Struma River||Macedon, Greece|
|Syr Darya River||Scythia|
|Tigris River||Sumer, Arabia|
|Tonlé San River||Khmer|
|Tonlé Sap River||Khmer|
|Ural River||Russia, Scythia|
|Volga River||Russia, Scythia|
|Yenisei River||Mongolia, Russia|
|Yukon River||Canada, America|