Glaciation and deglaciation and the accompanying lowering and rising of sea levels during the late Pleistocene is known to have greatly affected land mass configurations and plant and animal distributions in South East Asia. This report provides a series of maps that estimate the areas of exposed land in the Indo-Australian region during periods of 17,000, 150,000, and 250,000 YBP. The ancient shorelines are based on present day depth contours of 10, 20, 30, 40, 50, 75, 100, and 120 m. On the maps depicting shorelines at 75, 100 and 120 m BPL, the major Pleistocene river systems of the Sunda and Sahul shelves are depicted. Estimates of the number of events and the duration of time that sea levels were at or below the illustrated level are also provided. Previous reconstructions of sea-level changes have emphasized the maximum lows only. The perspective provided here emphasizes that sea levels were at their maximum lows for relatively short periods of time and sea levels were at or below 30 and 40 m BPL for more than half of each of the time periods considered.