 Brownhills is located at 52 ° 38 ′ 49 @.@ 20 ″ N 1 ° 55 ′ 58 @.@ 80 ″ W on the edge of Cannock Chase and lies mostly at a height of approximately 150 metres ( 492 ft ) above sea level , although there is a sharp incline to nearly 180 metres ( 590 ft ) at the eastern end of the town . The highest point of Cannock Chase , standing at 244 metres ( 801 ft ) above sea level , lies approximately 4 miles ( 6 km ) from the town . Although a small river called Crane Brook flows slightly to the east of Brownhills , the only significant bodies of water in the area are human @-@ made , namely the canal and the 3 km2 ( 1 @.@ 2 sq mi ) reservoir Chasewater , which lies to the north , between Brownhills and Cannock Chase . The reservoir was constructed in the 18th century and reshaped by reclamation schemes as recently as the 1970s . 
