I've been hearing some great things about the new dog park in Grand Forks from friends who live in the area. Their dogs love the exercise and the opportunity to socialize with other dogs. I've heard a couple negative comments, too. Some owners don't keep an eye on their dogs.
The dog park will only be as good as the people who bring their dogs. Dog owners should make sure their dogs are behaving appropriately and that their waste is picked up and properly disposed of. I'm sure most dog owners observe the rules. It only takes a few "rule breakers" to give the park a bad reputation.
I can only speak from my experiences at the dog park here in Bismarck. Overall, the dog owners are very responsible. However, if there's a dog owner who does not take action when their dog is being aggressive or doesn't pick up after their dog, the other dog owners are always quick to speak up and say something to the owner.
Maybe if the responsible dog owners who frequent the park in Grand Forks did this the irresponsible owners will get the hint and start following the rules.