Proposed walls for basins

This slide shows a plan and three section drawings for the proposed basin walls for the lake, as per Walter Burley Griffin's Preliminary Plan.

On this slide, the areas that would require excavation appear in red and those requiring infill are green.

Text below the plan on the slide shows that the total area of filling would be 244 acres and the total area of cutting, 29 acres. 

When this presentation was given, there were concerns about the high cost of excavation and infill needed to create Walter Burley Griffin's proposed lake.