 From there, the river goes south, through Eagley near Bromley Cross, towards Astley Bridge, after which it joins Astley Brook at Meeting of the Waters to form the River Tonge.Eagley Brook was historically important to the industrial and economic life of the north Bolton area.Its fast-flowing streams provided power to the water-wheels of the early industrial period, steam power at a later date, and soft water for bleaching and paper making.