sentences:  Dobbs Weir has had a long history serving the watersports community, as the sluice gates after the v-drops could be changed according to the flow of the water.Especially in winter months after heavy rain the weir could be changed into a formidable feature used for whitewater training or playboating.Since August 2003, when British Waterways padlocked the sluice gates, watersports enthusiasts have been forced to go elsewhere, as the site has been deemed unsafe and requires approximately £25,000 for the weir to be repaired.