1994 Chevy Lumina Water Pouring Out

My sister has a 1994 Lumina with 190,000 miles on it. She noticed water pouring out from under the engine. Both my friend and I cannot figure out where it's coming from. It is on the back side of the engine, but the intake and head gaskets aren't leaking (or rather not wet). The only place you can see it coming out is between the starter and the block, somewhere above the starter, but we cannot see where it is coming from. We took the dust cover off the flywheel to get a bettre look, but still can't find it. Any suggestions on what it may be. It's her only transportation so I have to fix it.