It furnished the water for the great basin just below, which served for the general laundry purposes of the Indian village.

The water was led through earthen pipes from the reservoir north of the church, which to this day furnishes Santa Barbara with water.

It was built in 1806.

To obtain the precious liquid from the mountains, a very strong dam was built across 'Pedragoso' creek about two miles back of the Mission.

It is still in good condition.