Water perculating from left side foot well

On our 2013 Polaris Switchbacks, last April while riding in the warm afternoon temps, three of us experienced an extreme amount of water coming from the left footwell. Any ideas where it's coming from? I presume it's from the heat exchanger in the front of the tunnel, but looking for a remedy. Our pants would be wet nearly to the knee, as the water would actually spray in the wind. Thanks!
 
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