Could be a Ground Hog (Woodchuck), Ground Squirrel, maybe a Chipmunk. Down by the pond most likely is Muskrats.
You could live trap, but then what to do with the animal if you do because in Michigan you need to be licensed by the state to transport wildlife anywhere.
Poisons are not recommended since they can do harm to non target thingys, such as children. Flooding of the tunnels will do little because these wee buggers would not have survived longer than us if they had not figured out long ago how to route rain water so that did not flood them. Gassing is also not recommended since hooking a hose to the exhaust to any gasoline engine and sticking the other end into the hole is simply a good way to make an engine mechanic rich.
I found many years ago that smoke bombs did nothing except put some of my money in someone else's pocket. Since I've not seen them in a long time they may not be on sale anymore.
If these buggers are real pests that need to be removed hiring a wildlife control specialist may be the best option.

Yeah It looks like a ground hog or maybe some animal that likes to dig into holes like a turtle or something.

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