The Brandywine flowed out of Lake Evendim in northern Eriador, and continued eastward for about 60 miles before turning generally southward; and afterwards for about another 120 miles flowed through the easternmost reaches of the Shire, forming the Shire's eastern border and separating most of Buckland, except for the Marish in the Shire's Eastfarthing (where the predominantly Stoorish hobbits remained loyal to the Brandybucks of Buckland), and the Old Forest from the Shire. Its only major crossings in the Shire were the Brandywine Bridge (originally Bridge of Stonebows) on the East Road and the Bucklebury Ferry.
Skirting the Old Forest to the south, the river then looped southwestward, crossing an old road at Sarn Ford and flowed to the north of the depopulated region of Minhiriath before flowing into the Great Sea to the north of the forested region of Eryn Vorn. The river also has an island known as Girdley Island in the river just above the Brandywine Bridge.
No tributaries of the Brandywine are described except those near or in the Shire:
- The Water - in the central Shire, from the northwest
- The Stockbrook - arises in the Woody End
- The river Shirebourn - rises in Green-hill country, tributary is Thistle Brook
- Withywindle - from the Old Forest
The name Baranduin was Sindarin for "golden-brown river". The Hobbits of the Shire originally gave it the punning name Branda-nîn, meaning "border water" in original Hobbitish Westron. This was later punned again as Bralda-hîm meaning "heady ale" (referring to the colour of its water), which Tolkien renders into English as Brandywine.
To the Hobbits of the Shire, the Brandywine was the boundary between the known and unknown, and even those who lived in Buckland on the immediate opposite shore were considered "peculiar".
|Foreign Language||Translated name|
|Chinese (Hong Kong)||烈酒河|
|Serbian||Брендивајн (Cyrillic) Brendivajn (Latin)|
|Nunduinë • Siril|
|Glanduin • Gwathló • Hoarwell • Lune • Sirannon • Withywindle|
|Anduin • Celebrant • Forest River • Gladden • Greylin • Limlight • Nimrodel • Redwater • River Running|
|Anduin • Ciril • Erui • Gilrain • Harnen • Lefnui • Mering Stream • Morgulduin • Poros • Ringló • Serni|
|Adorn • Entwash • Isen • Mering Stream • Snowbourn|
|Brandywine River • The Water • Shirebourn|
|Adurant • Ascar • Brilthor • Duilwen • Gelion • Legolin • Little Gelion • Thalos|
|Aros • Dry River • Esgalduin • Mindeb • Narog • Rivil • Taeglin|
|Brithon • Celebros • Celon • Malduin • Nenning • Ringwil • Sirion|