Pros:
Cold Brook is a county park located near the I-94 corridor between Kalamazoo and Battle Creek, MI. The large park is centered around a lake and has a campground, boat launch, and more on site - but there is still enough room in one corner for a 24 hole disc golf course.
This course has clearly been around a while, but is aging gracefully and is still a lot of fun to play. The well-established fairways range from very tightly wooded and short (holes 9-16 are each between 150'-250' and require all different kinds of accurate throws) to moderately wooded and longer, to #22's wide open field. My favorite hole was #4, which is kind of a gentle "S" shaped 390' fairway that plays down then back up a wooded valley with a single large downed tree at the bottom.
Elevation changes are used well throughout most of the course, including on several precarious basket placements. There is no brook (cold, or any other temperature) in sight, but the central lake does come into play behind the baskets of holes 19 and 20. It's also arguably in play on #3 if you get a bad tree kick and the water level is up.
The tee pads are mostly concrete, or a couple of holes had arrays of patio pavers. They were all nice and long and in good shape. Landscaping has been done around several of them to make sure they stay flat. Many tee areas had trash cans and benches.
The baskets are DGAs that were definitely on the older side, but still seemed fine. There was a porta potty at the parking lot. The course circles back to the lot after #5 and #18, and you could easily skip holes in other places too if short on time.
Cons:
I noted quite a few safety concerns here. A few different holes play near parking lots, and the park drive helps define the fairway on holes 19 and 22. A couple of other holes played through likely multi-use areas. Elsewhere, holes play quite close to each other and on one occasion even directly at one another. The finishing hole #24 has what looks like a long, gently curling fairway cut through the woods - but a couple hundred feet away from the tee is actually the approach for #8. The real fairway for #24 veers off into a tight wooded downhill section that isn't at all apparent from the tee. I didn't realize this until someone's fantastic tee shot on #8 whizzed by my head. In lieu of an actual redesign, the park should at least install a tall fence here (similar to what has been added between #12 and #13) to keep these two fairways separate.
The tee signs are so faded that many of them were basically illegible. The ones that were still legible had a very basic style with hole number, distance, and a very rough line that I actually found misleading on more than one hole. There was no kiosk/map, and no directional signage. New signage across the board would definitely be a nice upgrade.
There are three baskets in view from the parking lot, but none of them are practice baskets. They are the live baskets of holes 5, 18, and 24.
Big arms and those who struggle with accuracy will definitely not enjoy the short, very tight fairways in play through the middle 1/3 or so of this course. A few inches here could mean the difference between clearing the gap, and a bad tree kick that will lead to a bogey or even worse. I personally enjoyed that sort of play to the extent it was present here, but it's definitely not for everyone.
Constant road noise distracts from the natural feel a little bit.
Other Thoughts:
When playing hole 19, I thought I saw movement through the trees near the basket and stopped to peer ahead. That was when I saw a family of huge waterfowl grazing near the waters edge. Their heads were almost at my head height. I'm no ornithologist but I think these were herons, cranes, or something similar. Before I could get a clearer look, they startled and flew off across the lake.
Google Maps has the location of the first tee correct, but the park entrance right near it is not actually open. You'll need to take the other (west) entrance, and then pay a $5 park fee to enter. There was an attendant booth, but no attendant when I visited so I used the self pay option.
Cold Brook DGC is still a fun round, but it kind of feels like it is past its prime. If the park staff decided to put more time and some of the $5 entrance fee revenue into upgrading this course, this could become one I rate a half or maybe even full disc higher. But that doesn't really appear to be happening, and a "strong 3.0" rating is the best I can give for this course in its current state. It's not a bad option if you are in the area, but nothing to go out of your way for.