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ARTICLE

Can Congress Stop the Nutria Invasion?

Austin Bode

Summary

  • The invasive nutria (Myocastor coypus) devastates wetlands by consuming vegetation, causing erosion, and weakening infrastructure, particularly in states like Louisiana and Maryland.
  • Programs like Louisiana’s Coastwide Nutria Control Program and Maryland’s Chesapeake Bay Nutria Eradication Project have significantly reduced nutria populations through bounties and eradication strategies.
  • The Nutria Eradication and Control Reauthorization Act of 2025 seeks to extend federal funding through 2030 to continue these successful control efforts.
Can Congress Stop the Nutria Invasion?
mattiselanne / 500px via Getty Images

The Nutria Eradication and Control Reauthorization Act: Protecting Public Lands from an Invasive Threat

Public lands across the United States face numerous ecological threats, but few are as destructive as the nutria (Myocastor coypus). This invasive rodent, originally introduced for the fur trade, has devastated wetland ecosystems, including those managed by the Department of the Interior. Recognizing the urgent need to address this issue, Congress has introduced the Nutria Eradication and Control Reauthorization Act of 2025 (H.R. 776) to extend federal funding for nutria control efforts through fiscal year 2030. This legislation is critical to preserving public lands, mitigating environmental damage, and ensuring the resilience of wetland ecosystems.

Nutria and Public Lands

The Department of the Interior plays a pivotal role in managing public lands, including national wildlife refuges, wetlands, and conservation areas. Many of these lands are severely impacted by nutria, particularly in states like Louisiana and Maryland. Nutria consume vast amounts of wetland vegetation, leading to erosion, habitat loss, and increased vulnerability to flooding and storm surges. Their burrowing behavior further weakens levees and dikes, compromising infrastructure critical to water management on public lands.

Federal programs supported under the Nutria Eradication and Control Reauthorization Act have historically played a crucial role in restoring these damaged ecosystems. Funding from previous reauthorizations has helped finance projects such as Louisiana’s and Maryland’s Chesapeake Bay Nutria Eradication Project. These efforts have led to significant reductions in nutria populations and the restoration of thousands of acres of public wetlands. Without continued funding, however, these hard-won gains could be lost, and nutria populations could rebound, causing even greater ecological and financial harm.

Louisiana and Maryland’s Nutria Control Efforts

Louisiana has been at the forefront of nutria control efforts through its Coastwide Nutria Control Program, which was established in 2002. This program incentivizes licensed trappers to remove nutria from the wild by offering a bounty per nutria tail turned in. Through this initiative, Louisiana has successfully removed millions of nutria, helping to slow wetland degradation and restore natural habitats. Additionally, wetland restoration projects funded by the program have reinforced coastal defenses against hurricanes and flooding, crucial for the state's resilience against climate change impacts.

Maryland’s Chesapeake Bay Nutria Eradication Project, launched in 2002, took a different approach by focusing on complete eradication rather than population control. This program utilized a combination of trapping, monitoring, and habitat restoration to eliminate nutria from Maryland’s Eastern Shore. By 2015, officials declared nutria eradicated from the state, making it a landmark success in invasive species management. This effort demonstrated the effectiveness of targeted, sustained control programs and highlighted the importance of continued federal funding for other affected states.

A Legislative Solution: The Nutria Eradication and Control Reauthorization Act of 2025

The 2025 reauthorization bill seeks to amend section 3(e) of the original 2003 Act, extending federal support for nutria eradication through fiscal year 2030. This extension is vital to ensuring that state and federal agencies have the necessary resources to control nutria populations and rehabilitate affected public lands.

As of February 2025, the bill is under review by the House Committee on Natural Resources. Its passage would allow for continued collaboration between the Department of the Interior, the U.S. Fish and Wildlife Service, state agencies, and local conservation groups. These partnerships have been instrumental in the success of past nutria control efforts and are essential for addressing the evolving challenges posed by this invasive species.

The Urgency of Action

Failure to reauthorize this funding would jeopardize decades of progress in nutria control. Louisiana, Maryland, and other affected states rely on these funds to maintain existing eradication programs and expand efforts into newly infested areas. With nutria populations now encroaching on states like Texas, California, and Oregon, the need for federal support has never been greater.

Beyond the ecological toll, unchecked nutria infestations pose significant economic risks. Damage to agricultural lands, public infrastructure, and water management systems can lead to substantial financial losses. By investing in continued nutria eradication efforts, Congress can help safeguard public lands, protect local economies, and preserve the integrity of vital wetland ecosystems.

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