1990 190E

Have a coolant leak which seems pretty significant. There was a large puddle that actually appears to be originating from somehere between oil pan and alternator. I can't see for sure yet, will have to examin in the morning. As far as I can tell the hoses are dry and intact and so is the radiator. I do recall the signs of a bad water pump, but I wouldn't expect it to drain my entire coolant tank. Any suggestions/theories??

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1990 190E 3.0L