Yes, my son and his friends have caught smallies there. I have also seen a couple of videos in YouTube of snakiest being caught there. The security patrol will ask you to leave. No fishing allowed in the TRA canals in Las Colinas
You can fish the section of the channel next to Campion Trail in Spring Trail park just downstream from the lake.
It's a park and from what I hear you can fish in any Irving park. Those fake uppity Irving cops can't say anything about it.Spring Trail Park