The river valley is the centre of the catchment of the Helena River and extends from the edge of the Darling Scarp where Boya, Gooseberry Hill and Helena Valley define the 'mouth' of the valley that opens to the Swan Coastal Plain, east and south east past Mundaring Weir and Lake C.Y. O'Connor to its origins in the region of Mount Dale.
Peter Weir | Bob Weir | Gillian Weir | weir | John Weir | J. Alden Weir | Doddie Weir | Alison Weir | Christina Weir | Stuart Weir | Nick Weir | Mundaring, Western Australia | Mundaring | Mark Weir | John Weir Troy | John Weir (loyalist) | Johnny Weir | Harvey Weir Cook | Fishing weir | Bridge of Weir | Benjamin Weir | William Gilbert Weir | Weir River | Weir Farm National Historic Site | Wally Weir | Thomas Weir | Stuart Weir (UK journalist) | Stephen Weir | Robert Weir (athlete) | Robert Weir |