Actually Eucharistic Adoration is growing.
Here is one list for California, including Palm Springs
acfp2000.com/Chapels/getState.php4?stateid=California
Here is another California list which is divided by area. At the bottom of the page you will have to keep going through the alphabet.
therealpresence.org/chap_fr.htm
Use these websites for a list of all chapels.
acfp2000.com/ therealpresence.org/chap_fr.htm
Another way to look for chapels is to use the diocesan directory.
I googled Eucharistic Adoration Chapels. I know there is another list that I have seen, but I cannot find it. Maybe you will have better luck.
In our town, the three Catholic parishes joined together to establish Perpetual Eucharistic Adoration. Also, believe it or not, it is sometimes easier to do 24/7 Perpetual than a single day. Especially in an area where there are third shift workers or retired people. If a Church already has an Adoration day, they may be ready for 24/7.
Here is something I found on this link.
ewtn.com/faith/teachings/euchd3.htm
What is the best location for Perpetual Adoration?
The best location for Perpetual Adoration is a small chapel. A chapel can be kept warm economically in the winter. It creates a greater atmosphere for quiet intimacy with the Lord, and people generally feel more secure in a smaller place. If the church does not have a chapel, any small room can be converted into one such as an altar boys’ sacristy, a crying room, a room in the rectory, convent, or parish center, are all suitable locations for a Perpetual Adoration chapel with proper security measures taken into consideration.
For those who wish to start Perpetual Eucharistic Adoration, this is a good source of information, guidance, and materials.
Missionaries of the Blessed Sacrament
P.O. Box 1701
Plattsburgh, NY 12901
acfp2000.com/