Lock 1 Blanchetown

Lock 1 Blanchetown is the first and lowermost lock and weir on the River Murray, located at Blanchetown in the Mid Murray Council area of South Australia, about 130 km northeast of Adelaide. Completed in 1922, it was the first of 13 locks built to aid river navigation and irrigation. The site is heritage-listed and remains operational, offering river views, engineering heritage and boat-locking demonstrations.

Visitors can expect an operational river lock and weir on the Murray River with a concrete lock chamber, weir gates, and control structures. The site includes sealed road access, parking, viewing areas above the lock, interpretive signage explaining the River Murray locks system, and open river frontage. Visitors can watch vessels being raised or lowered through the lock, view the weir pool and downstream river, and use picnic areas surrounded by river red gums and floodplain landscape.