 It can supply Halifax with water by gravity alone.The Middle Grain Beck and Carrs Beck flow into Hebble Brook, from the land around Halifax golf course, at Brookhouse, just south of Ogden Reservoir; it then continues south past Mixenden, where various small springs and old quarry workings add to the water volume.The brook heads south past Ovenden and Wheatley and flows underground in Brackenbed Sports Park.