| 21. | Runoff from the Valparaiso Moraine built outwash ridges of sand leading into the lake.
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| 22. | It straddles the north eastern tip of the Flinders Ranges and its outwash plains.
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| 23. | However, the stream's lower reaches are on alluvium and Wisconsinan Outwash.
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| 24. | Outwash plains and valley trains are usually accompanied by basins known as " kettles ".
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| 25. | Glacial outwash dominates the extreme southern latitudes.
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| 26. | The caldera later filled with water, eventually overflowing to cause a huge outwash flood.
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| 27. | Valley trains are long, narrow accumulation of glacial outwash, confined by valley walls.
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| 28. | Quaternary glaciation left deposits of stony loam till plus outwash deposits of sand and gravel.
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| 29. | It consists of an extensive outwash apron.
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| 30. | Other components of the watershed's surficial geology include gravelly till and outwash sediment.
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