Cutting off the northern meander required a longer channel to be dug, the final cut being 1,100 yds (1 km) long. Since the northern meander was shorter and the cut longer, the net reduction in distance was less, but the bypassing of islands and sandbars in the Portrack meander still made it worthwhile. The work was completed in 1831, resulting in the present river channel.
The River Tees has a very large estuary with mudflats and sandbanks which supports wildlife in the area. Sites such as Seal Sands are protected areas.
Seal sands is a sight of Special Scientific Interest as harbor seals have made it their home.
Cutting off the northern meander required a longer channel to be dug, the final cut being 1,100 yds (1 km) long. Since the northern meander was shorter and the cut longer, the net reduction in distance was less, but the bypassing of islands and sandbars in the Portrack meander still made it worthwhile. The work was completed in 1831, resulting in the present river channel.