Montana
New data raises more questions about health of Clark Fork fishery • Daily Montanan
While anglers flock to streams across the Clark Fork Basin for another fishing season, hardworking staff at Montana Fish Wildlife & Parks have been grappling with a sobering question: Is it safe to eat fish anywhere in the Clark Fork River?
Problems with fish in the Clark Fork aren’t necessarily breaking news. Previous testing by FWP found high levels of three types of dangerous contaminants: dioxins, furans, and PCBs in rainbow trout and northern pike in some stretches of the river. This discovery led to a formal advisory that the public avoid eating fish in certain river sections – from the Bitterroot confluence to where it joins the Flathead – due to human health concerns.
But the Clark Fork is a big watershed, and questions remained about whether fish in the headwaters or downstream should also be off-limits. These unknowns prompted Montana Trout Unlimited to partner with FWP and other stakeholders, the Clark Fork Coalition, the Montana Natural Resource Damage Program, the Missoula County Health Department and the Confederated Salish & Kootenai Tribes to pool resources to investigate the scope and potential sources of pollution.
In 2022, MTU secured a federal EPA grant to fund water quality and fish-tissue sampling at dozens of locations, from the Clark Fork headwaters to the Idaho border. FWP staff spent the 2023 season deploying samplers in the river and harvesting fish to test for the presence of dioxins, furans and PCBs. Now the initial results are in, and the picture may be bleaker than before.
The devices deployed last year identified elevated levels of PCBs, dioxins, and furans at the headwaters, again near Bearmouth, and downstream of Missoula. Although we await a definitive analysis, initial results suggest that levels may approach or exceed safe limits for human consumption. It is now clear that this contamination is widespread, but more work is needed to pinpoint its specific sources, and to develop effective remediation strategies to protect human and ecological health.
So what does this new data mean? We don’t have the complete answer yet.
Experts with FWP and Montana DEQ need to complete their quality-control analysis before making decisions about whether an expanded advisory is warranted. However, two things are for certain:
First, Clark Fork anglers should proceed with caution. Even in very small amounts, these highly toxic contaminants are known to cause cancer, damage the immune system, and cause developmental and reproductive problems. While more needs to be done to fully understand the 2023 data, an abundance of caution would dictate avoiding fish consumption throughout the river.
Second, the public needs more information. These contaminants are highly toxic and extremely difficult to detect. Testing is expensive, time consuming, and often leads to questions that warrant further investigation. In some areas, we currently have the resources to dig into the problem. At Smurfit-Stone – a known source of all three types of contaminants – the EPA is investigating the site and must do everything possible to quantify and mitigate Smurfit’s contribution to the problem. In other areas, we may need to collect more data to identify and remove new sources of contamination.
We’ve come too far to accept a perpetually contaminated Clark Fork fishery, and FWP’s discoveries demand a strong response. This is true not just at Smurfit but in the upper river, where hundreds of millions have already been invested in restoring a heavily damaged waterway. Through the ongoing and collective efforts of FWP, DEQ, and a broad set of community stakeholders, we are well positioned to identify and address threats to human and ecological health and work towards a cleaner and healthier Clark Fork.
David Brooks is the Executive Director, Montana Trout Unlimited and Andrew Gorder is the legal and policy director for the Clark Fork Coalition.
The Montana Lottery offers multiple draw games for those aiming to win big.
Here’s a look at July 8, 2026, results for each game:
Winning Powerball numbers from July 8 drawing
12-29-37-43-55, Powerball: 18, Power Play: 4
Check Powerball payouts and previous drawings here.
Winning Lotto America numbers from July 8 drawing
17-26-31-32-37, Star Ball: 01, ASB: 02
Check Lotto America payouts and previous drawings here.
Winning Big Sky Bonus numbers from July 8 drawing
03-13-16-17, Bonus: 10
Check Big Sky Bonus payouts and previous drawings here.
Winning Powerball Double Play numbers from July 8 drawing
06-27-33-44-69, Powerball: 23
Check Powerball Double Play payouts and previous drawings here.
Winning Montana Cash numbers from July 8 drawing
08-16-17-22-27
Check Montana Cash payouts and previous drawings here.
Winning Millionaire for Life numbers from July 8 drawing
16-18-43-48-50, Bonus: 01
Check Millionaire for Life payouts and previous drawings here.
Feeling lucky? Explore the latest lottery news & results
When are the Montana Lottery drawings held?
- Powerball: 8:59 p.m. MT on Monday, Wednesday, and Saturday.
- Mega Millions: 9 p.m. MT on Tuesday and Friday.
- Lucky For Life: 8:38 p.m. MT daily.
- Lotto America: 9 p.m. MT on Monday, Wednesday and Saturday.
- Big Sky Bonus: 7:30 p.m. MT daily.
- Powerball Double Play: 8:59 p.m. MT on Monday, Wednesday, and Saturday.
- Montana Cash: 8 p.m. MT on Wednesday and Saturday.
- Millionaire for Life: 9:15 p.m. MT daily.
Missed a draw? Peek at the past week’s winning numbers.
This results page was generated automatically using information from TinBu and a template written and reviewed by a Great Falls Tribune editor. You can send feedback using this form.
HELENA, Mont — Gov. Greg Gianforte is backing a new effort to keep data centers from driving up Montanans’ power bills.
This week, Gianforte announced Montana is signing on to the Ratepayer Protection Pledge — an initiative endorsed by President Trump.
Several major technology companies like Amazon, Google, Meta, Microsoft, OpenAI, Oracle, and XAI first signed the pledge back in March.
The pledge comes as data center development continues to grow — raising questions about how much new energy will be needed and who will pay for it.
NBC Montana spoke with Julia Haggerty, professor of geography and department head of earth sciences at Montana State University, about whether Montana’s power grid is ready for that growth.
“Not without resolution of significant transmission bottlenecks and massive amounts of new generation. So, while our grid is adequately, relatively adequately equipped to serve the needs of our current load base, it’s definitely not equipped to accommodate the new demands without a lot of expansion,” she said.
According to the pledge, data center developers will pay for new power generation, and infrastructure needed to support their operations.
“It does align with ongoing regulatory efforts to ensure that the cost of new generation associated with data centers is borne by the developers of those data centers and not customers,” Haggerty said.
The governor’s office says Gianforte’s support of the pledge is designed to encourage responsible data center investments while protecting Montana ratepayers from long-term costs.
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