 Slack Brook drains an area around Brindle, having its source close to Thorpe Green just outside the village, whereas Whave's Brook rises near Brimmicroft and runs southwards, almost parallel to the Leeds and Liverpool Canal by Ollerton Fold.Whave's Brook is fed by Laund Brook, running northwards from close to Withnell.The Lostock continues along the Leeds and Liverpool Canal to Lower Copthurst, where it turns westwards, watering Whittle-le-Woods before turning north by Clayton-le-Woods, then running through the Cuerden Valley Park.