I got White's mate, and while I do have an waterfall/pond area they aren't big swimmers. So I also have a water bowl for them, which I know they use each night.

Last night was the first time I saw one of them sit in the pond area on a semi submerged rock.

IMO I think it depends on the frog/toad species, whether they like deep areas to swim. White's normally don't as they are arboreal.