 The dam wall is situated in a narrow gorge running east and west , with rock sides sloping upward from the river bed . Behind the dam wall , the south branch of the Canning River joins the main stream , with the impounded water forming a lake which stretches back in three major arms to the east south @-@ east and south . 
 The dam wall is situated in a narrow gorge running east and west , with rock sides sloping upward from the river bed . Behind the dam wall , the south branch of the Canning River <a href='uninflect' title='1'><mark>joins</mark></a> the main stream , with the impounded water forming a lake which <a href='uninflect' title='2'><mark>stretches</mark></a> back in three major arms to the east south @-@ east and south . 
Da dam wall is situated in a narrow gorge running east and west , wid rock sides sloping upward from the river bed . Behind the dam wall , the south branch of tdaCanning River join the main stream , with thdampounded water forming a lake which stretch back in three major arms to the east south @-@ east and south .