I found water under the driver floor mat, passenger floor mat, and passenger floor mat (behind the driver). This LR3 only has 1 sunroof so I taped it off with duct tape but a lot of water is still entering the cabin. I do not have a garage or carport. It is parked on a slope with the driver's side downhill. The water is now accumulating under the driver side floor mat.

Update: Found broken drain tube under driver side dash and plugged.

 

You're gonna want to address ALL of the water ingress points.

 

Is there a list that you can link?

 

Probably....but I can just tell you, and others can chime in.

All of the sunroof drains - with the front passenger side being the most notorious.
The Pollen Filter Box - water gets past the windshield cowl and into the box and then into the cabin.
A-Pillar - on the passenger side under the A-Pillar trim piece there are holes that water gets through. Easy fix.

 

Thanks. Just to verify, passenger side RHD or LHD?

 

Passenger side is on the right....if you're in the vehicle facing forward.

 

I'd recommending very gently removing that duct tape asap! You're likely to pull your paint off using that stuff. Exterior painters tape is a much safer choice.

 

Another water source is the AC drain lines. They run on the sides of the center console, easy to get to and worth pulling them off and pushing some trimmer line through them to clear any potential clogs. If they clog they'll back up and pour water into the floorboards.

 

Wow! It is almost like Land Rover engineers when out of their way to direct water tubes into the cabin. Crazy.

 

One more possibility are the nuts set into the roof, used to attach the roof rails. They seemed to be set in some semi-hard epoxy and cracked.