So recently, an old thread about a dam failure siren system for the McGuire Reservoir in Oregon surfaced, and that encouraged me to hunt for sirens along the Nestucca river. I ended up finding 5 clearly ex-Trojan Model 2s, plus one which had already been known about:
https://goo.gl/maps/z2wEvPwjfSWRn9Yu9
https://goo.gl/maps/94A8ssawZzV6SweS6
https://goo.gl/maps/mk689Ka8Trtj2Jo16
https://goo.gl/maps/R2PZdeW4b8GAHKtV9
https://goo.gl/maps/9td5mLoEJPkmgtbeA
And the one that had already been located, but was not known to be part of a new system:
https://goo.gl/maps/5nZE2P4jrd62hhxR7
And today, I called Tillamook County EMA and they said that they were still active!!! This brings the number of 100% certain to be active ex-Trojan units up to 7! Every siren has a plaque stating that they are tested on the second Wednesday of the month, but the street view was too low resolution to make out the smaller text that probably had the exact time. Also, not only this, but I was told that there was also a system for the Barney Reservoir, which lead me to find these locations:
https://goo.gl/maps/Ljaij68tMoB7CrKY8
https://goo.gl/maps/w75UNB5hTGML8cWZ7(possible siren)
https://goo.gl/maps/GiABrSdN7hhK7sN86(possible siren)
https://goo.gl/maps/kjGeQdwho4huYJaZ7
https://goo.gl/maps/PJuQKUxgRUzVfTwg9
I’m 100% sure that ones for the Barney Reservoir are not ex-Trojan, as they look like 2001s(with a random Modulator thrown in). The guy at the EMA said they were not controlled by the county, but rather by McMinnville Water and Light, who owns the reservoirs. This is big, because there are very few inland systems in Oregon and the discovery of a new one provides lots of chances for siren recordings and other things, and previously there was only one confirmed to be active ex-Trojan unit, the Roads End Model 2 in Lincoln City, now there are 7.