It's the water pump. Coolant leaks out the weep hole, down the body of the pump, between the two lower bolts and along the oil pan flange of the block. Yuo can probably snake a finger to the 7 o'clock position of the water pump snout to feel the weep hole. If you undress the area so you can see, you'll get the idea that the water pump is leaking from the main passage to the block or the water pump body is cracked. The leak from the weep hole is very covert when viewed from above.