We get them in our garden, and sitting croaking on the front door step. There's not a pond in the street, and it's not particularly damp. I'd just leave it alone, it'll find it's way to somewhere suitably dank and drear.
Someone I know has had one living in their dog loo for about 8 years now. They dug out a huge whole for a dog loo, bucket with lid & holes at the bottom. Never used the thing and now this toad lives in it. Not a pond in site either. It will either move on of it's own accord or stay with you for years.