Water leaking from floor heat vent 1999 Cherokee

[Twostepper480]

Please help my Cherokee is turning into a lake. There has been a decent amount of rain around here lately and it seems to be finding it's way into my heat a/c ducts. It is way way too much water to be only condensation from the a/c. I barely use the a/c at all. It is not constantly leaking. The water will pour out of the driver's side floor vent all over the mat and pedals. There is also a small drip/trickle coming from the vent on the passenger's side. I had read somewhere that it may be a clogged drain. I do not know where the drain is located. If someone has another idea of what it may be or knows how to fix it please let me know. Thanks!

[gtmud]

The drain your referring to is located on the firewall, directly below the heater hoses, just above the uni-body frame. It's a rubber hose with a 90 degree bend formed into it.