Friday, July 28, 1769
To Santa Ana River, near Olive.
California Registered Landmark - 204 - Old Santa Ana

Gaspar de Portolá Diary
The 28th, we proceeded for two hours on a good road and we halted by a stream about eight yards wide and about sixteen inches deep which flowed with great rapidity. Here, at twelve o'clock, we experienced an earthquake of such violence . . . supplicating Mary Most Holy. It lasted about half as long as an Ave Maria and, about ten minutes later it was repeated though not so violently. Much pasture and water. Here there was a very large Indian village of about seventy inhabitants, to all appearances very docile.

Miguel Costansó Diary
From Santiago we went to another place of which the scouts gave us particulars. It was not far, in truth, as we arrived after an hour's march. It is a beautiful river, and carries great floods in the rainy season, as is apparent from its bed and the sand along its banks. This place has many groves of willows and very good soil, all of which can be irrigated for a great distance. We pitched our camp on the left bank of the river. To the right there is a populous Indian village; the inhabitants received us with great kindness. Fifty-two of them came to our quarters, and their captain or cacique asked us by signs which we understood easily, accompanied by many entreaties, to remain there and live with them. He said that they would provide antelopes, hares, or seeds for our subsistence, that the lands which we saw were theirs, and that they would share them with us.
At this place we experienced a terrible earthquake, which was repeated four times during the day. The first vibration or shock occurred at one o'clock in the afternoon, and was the most violent; the last took place at about half-past four. One of the natives, who no doubt held the office of priest among them, was at that time in the camp. Bewildered, no less than we, by the event, he began, with horrible cries and great manifestations of terror, to entreat the heavens, turning in all directions, and acting as though he would exorcise the elements. To this place we gave the name of Río de los Temblors.

Fray Juan Crespi Diary
About seven in the morning we set out, continuing our way to the northwest along the skirts of the mountains which we have on the right, to the north, and after traveling a league and a half we came to the banks of a river which has a bed of running water about ten varas wide and half a vara deep. It is not at all boxed in by banks. Its course is from northeast to southwest, and it empties through this place, according to the judgment of those who sailed to the bay of San Pedro. It apparently has its source in the range that we have in sight on the right, about three leagues from the road that we are following. The bed of the river is well grown with sycamores, alders, willows, and other trees which we have not recognized. It is evident from the sand on its banks that in the rainy season it must have great floods which would prevent crossing it. It has a great deal of good land which can easily be irrigated. We pitched camp on the left bank of this river. On its right bank there is a populous village of Indians, who received us with great friendliness. Fifty-two of them came to the camp, and their chief told us by signs which we understood very well that we must come to live with them; that they would make houses for us, and provide us with food, such as antelope, hares, and seeds. They urged us to do this, telling us that all the land we saw, and there was certainly a great deal of it, was theirs, and that they would divide it with us. We told him that we would return and would gladly remain to live with them, and when the chief understood it he was so affected that he broke into tears. The governor made them a present of some beads and a small silk handkerchief, and in gratitude the chief gave us two baskets of seeds, already made into pinole, together with a string of beads made of shells such as they wear. I called this place the sweet name of Jesus de los Temblores, because we experienced here a horrifying earthquake, which was repeated four times during the day. The first, which was the most violent, happened at one in the afternoon and the last one about four. One of the heathen who were in the camp, who doubtless exercised among them the office of priest, alarmed at the occurrence no less than we, began with frightful cries and great demonstrations of fear to entreat heaven, turning to all the winds. This river is known to the soldiers as the Santa Ana.(1)

(1) Still called Santa Ana. Camp was near Olive, east of Anaheim (Bolton)

July 27 To Santiago Creek, northeast of Orange.
July 29 To La Brea Canyon, north of Fullerton.