Koss River
title: "Koss River" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["rivers-of-south-sudan", "geography-of-eastern-equatoria"] topic_path: "geography" source: "https://en.wikipedia.org/wiki/Koss_River" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::data[format=table title="Infobox river"]
| Field | Value |
|---|---|
| name | Koss River |
| subdivision_type1 | Country |
| subdivision_name1 | Uganda, South Sudan |
| tributaries_left | Shilok River, Ingawi River |
| :: |
| name = Koss River | image = | image_size = | image_alt = | image_caption = | map = | map_size = | map_alt = | map_caption = | source1_location = | mouth_location = | progression = | subdivision_type1 = Country | subdivision_name1 = Uganda, South Sudan | basin_cities = | length = | source1_elevation = | mouth_elevation = | discharge1_avg = | basin_size = | river_system = | tributaries_left = Shilok River, Ingawi River | tributaries_right = The Koss River (Arabic هواشناسی: Khor Koss) is a river that flows in a north of northwest direction through the erstwhile Eastern Equatoria state of South Sudan, fed by streams from the Imatong Mountains to the west.
The Koss river rises near Ikotos. The head-waters of the river form a waterfall near Laborokala. This is the location of an annual Lango ceremony before the start of the rainy season where a goat is sacrificed and its stomach contents and later its bones are thrown into the stream.{{cite book |url=https://books.google.com/books?id=hX09AAAAIAAJ&pg=PA356 |page=356 |title=Pagan tribes of the Nilotic Sudan |author=Charles Gabriel Seligman |author2=Brenda Z. Seligman |publisher=Routledge & Kegan Paul |year=1932}} The Shilok river, a tributary of the Koss that separates the southeastern part of the Imatong mountains from the Teretenya ridge, joins the Koss not far from its source.
The Koss river divides the lowland area east of the Imatong Mountains from that west of the Lafit, Dongotona and Nangeya Mountains. Streams from these mountains feed the river. The river flows through the Bari country to the east of Torit.{{cite book |url=https://books.google.com/books?id=QS_GYMeSzRMC&pg=PA374 |page=374 |title=A biographical dictionary of the Sudan |author=Richard Leslie Hill |publisher=Routledge |year=1967 |isbn=0-7146-1037-2}} Near to Tirangore the river is spanned by a bailey bridge on the Torit-Kapoeta road, built by the Norwegian Church Aid.{{cite book |url=https://books.google.com/books?id=Ac6g7jXgqdUC&pg=PA99 |page=99 |title=Economic development of southern Sudan |author=Benaiah Yongo-Bure |publisher=University Press of America |year=2007 |isbn=978-0-7618-3588-2}} In 1881, Emin Pasha made a trip from Gondokoro on the Nile to "Tarangole", and from there travelled south along the Koss Valley, and then southwest to the Nile. North of Tirangore, the river passes Lafon and then flows almost due north before being lost in marshland.{{cite web |url=http://www.gurtong.net/Governance/Governments/GovernmentofSouthSudanStates/EasternEquatoriaState/tabid/330/Default.aspx |title=Eastern Equatoria State (map) |work=Gurtong |access-date=2011-07-06 |archive-date=2013-12-25 |archive-url=https://web.archive.org/web/20131225022804/http://www.gurtong.net/Governance/Governments/GovernmentofSouthSudanStates/EasternEquatoriaState/tabid/330/Default.aspx
References
|url=https://books.google.com/books?id=PUa_cBHMB0IC&pg=PA12 |pages=11–21 |title=Flora of the Sudan-Uganda border area east of the Nile Volume 1 |author=Ib Friis, Kaj Vollesen |publisher=Kgl. Danske Videnskabernes Selskab |year=1998 |isbn=87-7304-297-8}}
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