By Nina B. Elkadi for Sentient.
Broadcast version by Judith Ruiz-Branch for Wisconsin News Connection reporting for the Sentient-Public News Service Collaboration

At least eight miles of a Southwest-Wisconsin stream were polluted by a manure spill earlier this month. The spill killed hundreds of fish, including many wild brown trout. The affected waterways — Spring Valley Creek, Moore Creek and the Kickapoo River — have long been remarkable for their healthy water quality, healthy enough to sustain naturally-reproducing trout populations. The source of the spill appears to be manure applied to fields by a 600-head dairy operation near Norwalk, Ben Uvaas, who works at the Wisconsin Department of Natural Resources (DNR), tells Sentient. A “gully washer,” or massive rain event, appears to have triggered the runoff, he says. Though the farmer of the dairy operation took measures to protect soil health, the combination of heavy rains and 11,500 gallons of applied manure per acre were enough to trigger a spill.

This year, there have been at least 9 documented manure spills in Wisconsin, according to the DNR. The Kickapoo River, where some of this manure was observed, eventually carries water all the way to the Gulf of Mexico. Contaminants like manure and other agricultural byproducts contribute to an oxygen-depleted area known as the “dead zone” that can kill marine life. In 2024, the dead zone spanned 6,705 square miles.

On May 17, the DNR received a call about this spill to their violation tip line. The warden who received the call — a law enforcement official tasked with enforcing natural resources laws — went out to the stream, where they observed the hundreds of dead fish.

Uvaas works on the state DNR’s non-point source pollution program, referring to the kind of pollution that tends to be carried by rain or snowfall, according to the Environmental Protection Agency. The warden was able to track the source back to a farm field in Monroe County, southwest of Norwalk, Uvaas says. Wisconsin Public Radio reported the farm as Brueggen Dairy Farm, a 600-head cow operation.

Brueggen Dairy is not considered a concentrated animal feeding operation as it falls under the 700-head dairy threshold set by the EPA. In 2022, the operation received the Monroe County Conservation Farmers of the Year award.

On Monday, May 19, the DNR fisheries team examined most of the area — collecting hundreds of dead fish along the way. Spring Valley Creek, Moore Creek and the Kickapoo River, where the spill occurred, are prized trout habitats in a region that is a destination for fishers and other recreationalists.

So far, the investigation has determined that the week of May 11, a farmer injected approximately 11,500 gallons of manure, per acre, to around 130 acres of farmland. A Wisconsin DNR official recently said that anywhere from 12,000 to 15,000 gallons per acre is acceptable.

On May 14, the rain storm hit. Farmers frequently apply manure to their fields as fertilizer, but over-application can contaminate drinking water with nitrates, and high levels of ammonia can kill fish and other wildlife.

The farmer had been performing a range of what Uvaas describes as “soil health” practices meant to improve soil structure and the amount of manure applied does not appear to be beyond acceptable ranges. But the spill occurred anyway, illustrating that manure application has the potential to go wrong.

“Despite all our efforts to find the best time to apply (manure), Mother Nature is unpredictable,” Farm owner Randy Brueggen wrote in a statement to Wisconsin Public Radio.

“We as a dairy farm know how valuable this resource is, which is why we utilize incorporation practices in an intentional, safe and compliant manner,” Brueggen continued. “We strive to utilize our organic fertilizer over synthetic fertilizer for our crops. Our group’s farming practices always prioritize conservation. We want to sustain the land, so the land sustains us.”

In Wisconsin, “more than 1,500 miles of streams and rivers, and 33 lakes, in the nine counties assessed have impaired waters due overwhelmingly to combined pollution from manure and commercial fertilizer,” a 2022 investigation by the non-profit Environmental Working Group and non-profit law group Midwest Environmental Advocates found.

In the Driftless region of the Midwest, an area that covers parts of Northeast Iowa, Southwest Wisconsin and Southeast Minnesota, pollution containment and cleanup is especially difficult, Uvaas says. Unlike the rolling hills and lush soils of the Corn Belt, the karst topography is characterized by natural spring-fed streams, rocky bluffs and a thin layer of topsoil.

As a result, the streams are “fairly high gradient” and “high velocity,” says Uvaas, and this creates “an extremely narrow window” for response time, at least “compared to other parts of the state.” In the flatter parts of Wisconsin for instance, officials can put in barriers and collection sumps to collect contamination. But by the time DNR officials got to this site, it was too late. “There’s not any kind of collection or containment that’s feasible in the waterway, which is unfortunate, but that’s largely driven by timing and the topography here.”

Sentient is awaiting records from the Wisconsin DNR for more information regarding this spill, including enforcement action.


Nina B. Elkadi wrote this article for Sentient.


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On Tuesday, 20 Colorado officials sent a letter to the state's congressional delegation protesting six cuts to public lands management in the new tax and spending bill signed into law by President Donald Trump.

John Clark, mayor of Ridgway, said the elimination of river and climate data programs, which are essential to managing the Colorado River Basin and forecasting drought, will put additional burdens on food producers.

"If our farmers and ranchers don't have accurate data about exactly what the situation is with the snow pack and what's happening with the climate, how can they be prepared for each growing season?" Clark asked.

Five active wildfires have burned more than 22,000 acres on Colorado's Western Slope. The letter urged state representatives to reject any additional cuts to the U.S. Forest Service's Community Wildfire Defense Grant Program or other mitigation efforts. Republicans have argued cutting the size of government is necessary to eliminate waste, fraud and expenditures they claim are unsustainable.

Officials are also calling out a provision in the new law they believe undermines local decision-making by forcing oil and gas leasing on public lands. In addition, the law creates new barriers for clean energy leases on public lands, a move Clark worries will lead to the loss of good-paying jobs.

"If we discourage clean energy on public lands, that's going to severely impact our alternative energy workforce," Clark pointed out. "If we can't do wind and solar on public lands, it disincentivizes clean energy all across the state."

Officials are also asking members of Congress to fully fund the National Park Service to ensure proper staffing and maintenance. Clark argued standing up for lands owned by all Americans is essential to preserving Colorado's iconic natural landscapes and rural economies.

"Our economy is hugely dependent on people coming in to visit us and eat at our restaurants and experience these beautiful outdoor environments," Clark emphasized.


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A Wisconsin nonprofit is working with farmers in Southeast Wisconsin to educate communities about the importance of agroforestry, with plans to establish its first urban site in Milwaukee.

The Michael Fields Agricultural Institute has planted more than 400 trees across three sites this year, in partnership with the Savannah Institute. The sites include a community garden and two farms.

Iris Lee, owner of Lee Hemp Farms in Burlington, said agroforestry collaboration is breathing life back into her nearly 50-year-old organic family farm.

"You plant and design things that go together," Lee explained. "That will help not only humans but the animals and nature and bugs."

Agroforestry integrates trees, shrubs and perennial plants into crop and livestock systems. Lee noted one of the project's goals is to raise awareness of the practices and their larger connection to food systems, climate change and communities. The sites will also be used for educational demonstrations.

Community members and project participants helped Lee plant a trail of more than 100 trees in April, from hazelnut and elderberry, to Juneberry and pawpaw trees. They have already grown two to three feet, and she anticipates the berry trees will yield results first. Lee added she even loves talking to her trees and emphasized the physical and mental health benefits of agroforestry.

"Growing something is therapeutic," Lee observed. "To be one with nature -- meaning you know where things come from that you put in your body -- anybody that is concerned about the food and their health, to grow something is to build upon a better human being."

Nolan Burkard, research technician for the nonprofit Michael Fields Agricultural Institute, said diversifying food systems in this way is a growing area of interest for small farmers. Through agroforestry, they can also improve soil health and local climate resilience.

Burkard emphasized it requires long-term investment to get there.

"It takes quite a while for trees to grow up and start fruiting or provide their benefit," Burkard acknowledged. "That's why this project is so important because it is such an investment to plant trees."

Burkard added the institute is accepting applications until July 26 for an urban site in Milwaukee. The selected site will receive $15,000 and planning support to aid in designing it.

Despite the elimination of a handful of alternative energy tax incentives in the new federal budget, Iowa corn farmers will benefit from one that was extended.

Tax breaks and rebates encouraging investment in solar and wind power in Iowa were eliminated in the federal spending plan. However, the Trump administration extended an incentive enabling farmers in Iowa to produce more corn. The Hawkeye State is the nation's top corn producer, much of which is used to produce ethanol.

Chris Bliley, senior vice president of regulatory affairs for the biofuel trade organization Growth Energy, said grain-based fuels burn cleaner and are more environmentally friendly.

"The credit actually goes for production of lower carbon fuels that are used for transportation," Bliley explained. "It includes on-road fuels as well as sustainable aviation fuel. And so, the lower in carbon, the higher the credit."

The Trump administration has made efforts to extract more fossil fuels, which it said will move the U.S. toward energy independence.

Lawmakers in Iowa and neighboring Midwest states have introduced their own tax incentives for biodegradable jet fuel, which Bliley noted will create economic benefits for ag producers.

"To remain competitive, plants in Iowa and Nebraska and throughout the Midwest are investing in some of these key projects to lower their carbon intensity," Bliley observed.

The commercial airline industry is aiming for net-zero carbon emissions by 2050, according to the International Air Transport Association, which could continue to benefit Iowa farmers who provide corn for ethanol production.


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