Gorde,
A temporary solution like Keith suggested or parking in a building is only a solution if you do not want to ever move. However, if you plan on moving you coach at regular intervals, you need to locate and repair the leak. Sometimes, if the slide seals are where the leak is, you can retract the slide and stop the leak until you are able to replace the seals.
On my 2000 Marquis, I had to realign the slide to properly fit the opening and replace the slide seals when a leak developed at the bedroom slide several years ago. If you do not know how to check and/or repair a slide out leak you may be better served in finding a trusted professional to correct the problem before serious water damage occurs from the leak.
Gerald