The River Salwarpe is a 20.4 miles long river in Worcestershire, England. It is a left bank tributary of the River Severn, which it joins near Hawford. The Salwarpe is formed by the confluence of the Battlefield and Spadesbourne Brooks in Bromsgrove; it then passes Stoke Prior, Upton Warren, Wychbold, and Droitwich. Downstream of Droitwich, it passeā¦The River Salwarpe is a 20.4 miles long river in Worcestershire, England. It is a left bank tributary of the River Severn, which it joins near Hawford. The Salwarpe is formed by the confluence of the Battlefield and Spadesbourne Brooks in Bromsgrove; it then passes Stoke Prior, Upton Warren, Wychbold, and Droitwich. Downstream of Droitwich, it passes Salwarpe, and then meets the River Severn, near Hawford.