One of the many great pieces of the Portage Lakes State Park is the lakefront dog park. Although you could technically say this park is fenced, as most of the dog park is, but as the fence nears the lake it stops and so any canine who would attempt could easily escape. Well behaved dogs would find this park to be exceptional.
Not only is your canine allowed off the leash and through the forest area leading up to the lake, but they are allowed in the water itself. There is a lot of space to run, so if you are looking to wear out a canine with too much energy, this is a right place. Although the area is grassy, your canine is unlikely to leave this park very clean.
The edge of the lake quickly devolves into a muddy mess each day as the canines come in and out of the lake. The grounds stay pretty clean and well maintained by the parks and rec team that support the entire state park. There are bags available, and the trees make for tons of shade. Water is available here as well but bring your bowl. The park rangers will expel any aggressive canines.
The rangers enforce the rules of the Portage Lakes State Park. You are required to keep your canine on a leash outside the fenced dog park area. Vaccination of your canine is also needed. Some annual events at this park do launch off fireworks. If your canine does not handle fireworks well, keep that in mind on certain holidays like the fourth of July.