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Re:Should We Drain the Everglades? by hedora on Tuesday September 16, 2025 @09:54PM (#45270656)
Holland’s dykes are mostly built on impermeable clay.

As I understand it, that’s not possible in Florida, or at least in places like Miami, where the soil is almost entirely sand.

Holland has been creating progressively better soil surveys since the 1800’s, partially to allow them to place dykes intelligently.

https://www.sciencedirect.com/science/article/abs/pii/S00167...

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