The Waratah Gypsum Company's jetty.

The Stenhouse Bay jetty was used for the transport of gypsum by sea from the workings at Inneston and later Stenhouse Bay itself on the lower Yorke Peninsula. It was built in 1913 by the Permasite Company to facilitate the shipment of gypsum from its workings at nearby Inneston Lake. The original jetty was 164 metres long; extended in 1930 to 206 metres and with a depth of 7.6 metres at the loading berth. The gypsum was taken in ore trucks operating on wooden, later steel, rails and utilising a cable and winch to get the gypsum down the steep cliff to the jetty. Initially the trucks were hauled by horses, and later a steam engine was used. Three years later a cutting was made through the cliffs to allow the trucks to run straight onto the jetty using a counterweight system.

The barque Hougomont was scuttled at Stenhouse Bay in 1933 to form a breakwater. Stenhouse Bay ceased operations as a port in 1972. Improved road conditions, the increasing size of ships and the smaller size of the gypsum deposits on the lower peninsula were all factors in this decision. The mining company Waratah Gypsum now operates out of the port of Thevenard on the west coast, where it mines the gypsum deposits at Lake MacDonnell.

The jetty remains a popular diving and fishing site within the Innes National Park.

Nelson, Keith Kitchener The history of Marion Bay, Inneston and Stenhouse Bay, 1922-1939 [Warooka, S. Aust.: Warooka District Council], c1994

Collins, Neville C The jetties of South Australia: past and present Woodside, S.A.: Neville Collins, 2005