Portrack Marsh Nature Reserve is a 50 acres (20 ha) reserve by the northern bank of the River Tees between the Tees Barrage and the Tees Viaduct, near Portrack housing estate in Stockton-on-Tees borough, County Durham. It is the last remaining wetland on the lower Tees. The site is bounded by Marston Road, a disused railway line, the Northumbrian Water's waste water treatment site, the River Tees, the Tees Barrage White Water Course, the grounds of The Talpore pub and a Tees Barrage access road.

The Tees Barrage International White Water Course, originally the Teesside White Water Course, is an artificial whitewater course on the north bank of the River Tees, in northern England. It is part of the Tees Barrage and is located in the Stockton-on-Tees district, accessible by road only from Thornaby-on-Tees and best accessed by the A66. The course was built in 1995 at a cost of £2 million. The course is now open once more under the new name TBIWWC.