It is formed by the confluence at Elmstone Hardwicke of the Hyde Brook which flows westwards from Bishop's Cleeve, and Wymans Brook that flows northwest through Cheltenham.

[1] The Swilgate flows northwest and north to Tewkesbury where it joins the River Avon close to the latter's confluence with the Severn.

[2] The Swilgate gained some notoriety when New Statesman's issue of 4 January 2013 stated: "The Swilgate, the tributary of the Avon that runs round the southern edge of the town, had overflown its banks four days earlier".

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