Thanks for the suggestions.
I realise that past me was a bit silly to put it there in the first place - we have a big rat issue where we live and I was too concerned about ensuring that they couldn't dig in to think about the drainage!
I can move it to higher ground, it's just a massive pain...
Hey,
Any ideas for this particular issue? I've got a chicken run that has a hardwood chip cover on the bottom, tarpaulin over the top of it, but it's on a concrete standing so unfortunately our wild rain the past couple of days has finally decided to start flooding. Usually, it will evaporate...