Lake Alexandrina is located north of Encounter Bay and east of Fleurieu Peninsula within what are now the two following South Australian government regions: Fleurieu and Kangaroo Island region, and the Murray Mallee region. The Murray River is the major river to flow into Lake Alexandrina. Others include the Bremer, Angas, and Finniss rivers, all from the eastern side of the southern Mount Lofty Ranges. The lake is shallow and contains a number of islands near the southern end. Loveday Bay is an inlet located at the south-east of Lake Alexandrina, adjacent to Tauwitchere Channel. Lake Alexandrina is connected by a narrow channel to the smaller Lake Albert to the south-east.