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Minnesota DNR Debates Live-Sonar's Impact on Fish Populations

A controversial new fish-finding technology is under scrutiny in the Gopher State

By Travis Hall


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Minnesota DNR Debates Live-Sonar's Impact on Fish Populations

Forward-facing sonar—or live-scope technology—is a relatively new type of fish finding gear that lets anglers target specific fish on a display screen with remarkable precision. The tech is so effective, in fact, that it's caused a stir in certain fishing circles, with the National Professional Fishing League banning its use in their tournaments last fall. Now, the Minnesota Department of Natural Resources (MDNR) has organized a working group to determine how the technology should be regulated during future fishing seasons.

"The goal is to stay on top of the issue and gather information as the technology progresses," MDNR fisheries biologist Marc Bacigalupi tells Field & Stream. Bacigalupi heads up the MDNR's live-sonar working group, which was formed late last year to take closer look at the technology.  "Two key parts of our discussion are: one, is this too effective? Are we over fishing? Also, is it fair chase, or is too much of an advantage for an angler?"

According to  Bacigalupi, the group is made up of local musky and bass guides, biologists like himself, and other fishing industry experts who meet on a quarterly basis. "This is a place where the experts can compile data and provide recommendations to the department," he says. "We're trying to collect as much information from different states and  research institutions as we can."

Bacigalupi says that forward-facing sonar gives anglers a marked advantage when fishing in deep-water, particularly ice fisherman targeting large concentrations of crappie. "In those type of scenarios you could have a higher risk of barotrauma (injuries to fish caused by a sudden change in water pressure)," he says. "On social media or YouTube, you'll see videos about deepwater crappie fishing in the winter. There are barotrauma issues with that, and live sonar is definitely a part of that story."

Muskellunge is another species that Bacigalupi and the working group are focused on in their assessment of live-scope technology. According to MDNR, muskies have lower population densities than other native fish species. "If we were suddenly catching and killing a lot more [muskies], that would be something we would be concerned about," he told a local media outlet earlier this month.

 

For now, forward-facing sonar will remain unregulated in Minnesota. But that could change depending on the working group's findings, Bacigalupi says, which will take time to emerge. "In Minnesota, fishing regulations are adopted after a 16-month process," he says. "We can make recommendations for certain regulation changes to DNR leadership, but even if we bring a proposal to the table, there will be a long public-input process before any changes are made." 



 

Jigging And A Deadstick Successful


On the South Shore...  Ice fishing is strong across the south shore of Lake of the Woods out on Big Traverse Bay.  Most anglers are targeting deep mud with others fishing structure if available where they are going out of.  There are fish in both areas. 


Some ice roads are now extending more than 16 miles out, with over two feet of ice reported in most areas. Resorts and outfitters continue increasing weight limits.


As a rule, fishing continues to be very good with consistent action for anglers.  Most fishing activity is taking place in 26-32 feet of water.  Anglers are finding a healthy mix of walleyes and saugers, with plenty of opportunities to enjoy fresh fish frys and bring fish home. 


On the jigging line, jigging spoons with rattles tipped with a minnow head have been consistent.  Lipless crankbaits and jigging rap style lures also doing well.


On the deadstick, a plain hook or a small jig with a live minnow 6 inches to a foot off of the bottom.


You never know when the fish will move through.  Anglers fishing the entire day normally have success.  Electronics are a big help as well.


On the Rainy River...  The morning and evening hours are the best for fishing walleyes. A jig and minnow combination has been a good presentation.  A jigging spoon tipped with a minnow head is also producing some fish.


Catch-and-release sturgeon fishing is still producing some big fish through the ice.  There are two sturgeon seasons on Lake of the Woods and the Rainy River, a catch and release season and a harvest season in which you can keep one fish per calendar year.


The harvest season runs from April 24th – May 7th and July 1 – Sept. 30. The catch and release season runs May 8th – May 15th and Oct. 1 – April 23rd.


Although ice conditions on the river are good, they can vary significantly due to the current, so anglers should always consult local resorts or outfitters for the most up-to-date safety information and fishing advice.


Up at the NW Angle...  Ice fishing remains good at the Northwest Angle.  Resorts continue to move their fish houses staying on fish.  Some fish houses are set up on structure while others are targeting deeper mud flats.


Anglers are catching a nice mix of walleyes, saugers, jumbo perch, pike, and tullibees.  Good numbers of big crappies are still being caught in select areas and hard sided fish houses are available to target them.  Check with a NW Angle resort for info.


Jigging one line, deadsticking the second is effective.  Some days the jigging line is hot, other days the deadstick.  Some good colors have been gold, glow red, glow white, wonder bread, pink, chartreuse and orange.


Lake of the Woods enjoys an extended ice fishing season with fish houses on the ice through March 31st and walleye and sauger seasons open through April 14th. Perch, crappie, and pike seasons remain open year-round.


For more information on fish house rentals, lodging, and updates, visit LakeoftheWoodsMN.com/Lodging. Tight lines!


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