Skip to main content

Lights, bubbles, noise: DNR backs non-electric Asian carp barrier

  • Author:
  • Updated:
    Original:

A study commissioned by the Minnesota DNR has led the agency to recommend bubbles, lights, and sound as the best barrier to Asian carp on the Mississippi River.

The DNR hopes to keep the invasive fish from advancing beyond the Ford dam in St. Paul. The study found an electric barrier at the lock and dam could bring a public health risk and would likely be opposed by federal officials.

Consequently, the agency will recommend the Legislature fund the non-electric alternative, which involves underwater speakers and strobe lights. The cost of installing the system is estimated at $12 million to $19 million. The engineering firm that conducted the study concedes the technology is unproven and will not be 100 percent effective.

There are two varieties of Asian carp, bighead and silver. The carp are voracious eaters whose arrival in the Great Lakes or northern Minnesota would threaten native sport fish and the lucrative angling industry.

Next Up

St. Cloud Times

St. Cloud Times writing staff hit by Gannett budget cuts

Mass layoffs were expected at Gannett-owned outlets across the country.

PoolScammerLawsuitAG

Pool company sued by AG for allegedly scamming homeowners out of $1M-plus

According to the lawsuit, 17 Minnesota homeowners were affected by this scam.

image

Late cancellation of music festival leaves bad blood in Two Harbors

The cancellation announcement says the promoter walked away from the gig after being harassed by some local residents.

Screen Shot 2022-08-12 at 1.58.08 PM

Fatal crash shuts down southbound I-35 north of Twin Cities

A massive backup has built in wake of the fatal crash.

Christopher Keyes

Prolific speeder charged in crash that killed woman, 75, in Plymouth

The man has seven speeding tickets dating back to 2019.

minneapolis police

Hunt for suspect who broke into apartment, fatally stabbed man

The homicide is the 57th to happen this year in the city.

minnesota state fair

How to save money at the Minnesota State Fair this year

The fair released its money-saving tips Thursday, including on parking, admission and entertainment.

Motel 6 Rochester

Threat of 'potential overdoses' among youths prompts Motel 6 raid

Rochester police says fentanyl pills were among the items seized.

boyd huppert

Boyd Huppert, Twin Cities TV stations among Murrow Award winners

The KARE 11 personality known for his 'Land of 10,000 Stories' feature was among the national winners.

Related

Threat of Asian carp divides Great Lakes states

The New York Times looks at how the invasive species is sometimes pitting neighbors against one another. For example, some states are pursuing legal action to build a barrier cutting off the Mississippi River from the Great Lakes, but Illinois is fighting back, saying that would leave Chicago unable to control floods and interfere with shipping.

Federal leader of Asian carp fight focused on Great Lakes, skeptical of Miss. River plan

The Obama administration's point man in the fight against invasive Asian carp says his agency is focused on protecting the Great Lakes. But he doubts the plan Sen. Amy Klobuchar is pushing is a viable way to keep the fish out of the upper Mississippi River.