Hey Kat,
I think Wicklow is pretty bone dry at the minute, haven't seen it myself, but the club trip last week was held on a bout the lowest level possible to run Jacksons (rocks everywhere) and there hase been no rain since.
You could check with John Nally about the Boyne maybe, if no one here knows. If you text me I can give you his number, mine's O87 |345|8|.
Hope you find somewhere!