HOVLAND, MINN. – They slipped the boat into Lake Superior just before first light. The lake lapped in quiet rhythm on the shore. The sky was clear and the air finally had a bit of a chill. It looked like a promising morning for Eric Brisson and Tyler Smith.
Two of Minnesota’s last commercial fishermen, Brisson and Smith are in their mid-30s, and have been catching or processing fish on Lake Superior for most of their lives. But the fishing had gone dry over the past several weeks. The blistering September — the hottest in Minnesota in more than a century — raised the lake’s temperature to a relatively soupy 62 degrees at the start of October. That’s far too hot for the herring that Brisson and Smith chase seven days a week.
“But it’s been falling,” Brisson said, pointing to the thermometer in the small boat’s wheel house. The water temperature had dropped about 10 degrees in the past two days, maybe enough to get the small white fish, which grow to be about a pound and a half, active and moving again.
They know they are fishing on the cusp of a once-in-a-lifetime run of herring in Lake Superior.
After decades of decline, Superior’s herring had a stunningly successful spawn in the spring of 2022. More hatchlings survived than in any other year since records began in the 1970s.
That super-generation of fish is only 2 years old, still too small for a gill net. But they have already been helping in another way.
They’ve been showing up in the body mass of the lake’s big predators, trout and salmon. Minnesota’s coho salmon record has already been broken three times this year, a promising sign that the fish are growing fatter and happier on the sudden abundance of young herring.
If that epic class of herring can survive another two years, they’ll be too big for their predators’ mouths. And so long as there are still people willing to catch them, the restaurants, grocery stores, fish markets and smokehouses along the North Shore and beyond could have an unprecedented bounty of the fresh, mild, versatile and beloved northern fish.