The S J & E grade heads northeast from El Prado. The first mile has been obliterated by agriculture, but past Auberry Road it becomes a private drive called Foothill Road for a mile:
After that, the grade heads across private lands towards the foothills:
This is as far as I could explore without permission.
It can be followed most of the way to Auberry on Google Earth.
Now back to your regular narrow gauge programming....