Pierce Cedar Creek Institute: 850 acres a retired couple set aside

About ten miles south of Hastings there’s a lake so clean it has become a research subject. Brewster Lake sits at the heart of Pierce Cedar Creek Institute, and what makes scientists pay attention is what isn’t in it: no non-native plants, no introduced fish, a pocket of water that somehow stayed the way Michigan lakes used to be. The Institute owns nearly the whole watershed around it, which is the only reason it can stay that way.

The 850 acres came from Bill and Jessie Pierce, who set up a foundation and founded the place in 1988, then lived just long enough to see it open before both died in 1998. They left a working preserve rather than a monument — wetlands, forest, marsh, streams, and prairie all stitched together, plus a nature center and a biological field station where college students spend summers wading creeks and counting things.

For a visitor the offer is simple and generous: almost ten miles of hiking trails, free, open every day from dawn to dusk. You can walk through five or six different habitats in an afternoon without paying a dime or signing anything, which is rarer than it sounds. The trails loop past the lake the whole place exists to protect.

What’s quietly remarkable here is the math of it. Two people with one foundation managed to fence off an entire small watershed from the development and runoff that have homogenized most of southern Michigan’s lakes — and then handed the public the keys. The result is a piece of Barry County that looks, sounds, and even smells a little like the place did before any of the rest of it got cleared and farmed.