Based on color and shape I would guess it is
Araneus nordmanni, which are not aquatic.
It is definitely not a Cybaeidae (such as
Argyroneta aquatica or Pisauridae (the nursery web spiders) which are aquatic. Neither of those families have that large round abdomen like the Areneidae (orb-weavers) do.
You might post it to
Welcome to BugGuide.Net! - BugGuide.Net , there are some spider specialists there that should be able to id it.
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Elim Garak: "My dear Doctor, they're all true"
Doctor Bashir: "Even the lies?"
Elim Garak: "Especially the lies"
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