Site information:

The OHP originally put the location of this site as 20730 Temescal Canyon Rd.  There is nothing left of any site, as far as I know, and that address was likely a general location anyway.  Today, a housing development is in that area.

The approximate location of the site was:
33.820343, -117.507795

Plaque information:

A private plaque has been placed at the Dos Lagos center nearby.  

Past the end of Pronio Circle, near the end of the bridge walking path.

33.816263,-117.508516

Plaque text:

Site of Butterfield Stage Station where mail was delivered, horses changed and passengers given rest and a meal. First stage carrying overland mail left Tipton, Missouri on September 15, 1858 and, passing through Temescal, arrived in Los Angeles October 7, 1858.

First dedicated by the History and Landmarks Committee, Corona Woman's Improvement Club, May 24, 1934 at the site of the state station along Temescal Canyon Road. Rededicated Oct 7, 2006 by the Corona Woman's Improvement Club.

Registered 6/20/1935