Please be aware of a submerged obstruction at the top end of the horseshoe bend, on the right-hand side going upstream, this obstruction reaches close to the surface, but can't be seen. It is located approximately 22 mtrs from the right-hand bank. Can all skippers please slow down and take caution in this area due to the underwater obstruction. For more information, please call the Tees Barrage on 01642 633273.