 The main attraction of Waterfall Gully is the waterfall , First Falls . It is at the south @-@ eastern end of the road , in land owned by Cleland Conservation Park . The weir at the bottom of the Waterfall was constructed in the late 19th century and was part of Adelaide 's early water supply . Development in the area has continued since the construction of a restaurant in 1912 . <unk> over recent decades have included improving access to the site , upgrading the bridges , and the addition of new signage . 
