Here in Oklahoma we have pocket gophers, they will tunnel deep (no surface marks) or shallow leaving behind raised areas where they have been. And they are a total PITA, and more this year than previous years. One of the flower beds has been hit so hard the bulbs are pushed up out of the ground and it is soft like it has been cultivated, I sink ankle deep in it!
How to get rid of them, what does not work is those poisons at the store, yes you will get a few, but not unuf of them to make any difference. My dogs dig up a few, but there are way to many for them to make a difference (I have a big place).
And forget those electronic spikes that make noise, they do not work at all. Actually the gophers here tunneled up right beside them and tossed dirt on them. Glad I only bought 1,,,,
If you have the room, time to grow, and can find the seed, castor beans are lovely and poison to them (and you, so dont eat them). I found a few seed at a local feed store (for free, they cant sell poison plants) and have 6 plants now, next year I will plant all these seed from these and have many more. I watched one of these plants get sucked down into the gopher hole, T minus 1 fat gopher!
Good luck