Wildlife biologists in Kansas have removed about 109,000 pounds of invasive carp from the Kansas River since organized efforts began in 2022. The biggest haul came in 2025, when crews pulled out 36,863 pounds, which is about 18 U.S. tons.
That is a lot of fish, but is it enough to change a river’s trajectory? If removals keep pressure on carp, native species can reclaim food and space, and boaters face fewer of those startling silver carp jumps near a motor. Still, the river is not a lab tank, so progress has to be measured carefully and over time.
A record year on a busy river
The annual numbers show why 2025 stood out. Reports cited by Newsweek put removals at 25,339 pounds in 2022, 25,949 pounds in 2023, 21,649 pounds in 2024, then 36,863 pounds in 2025, pushing the total beyond 100,000 pounds.
Crews also widened their footprint, expanding work downstream by about 15 miles, while the Bowersock Dam in Lawrence continues to act as a barrier that helps limit upstream spread. Barriers are not foolproof, especially during high water, but even partial containment can buy time for targeted removal to work.
Why invasive carp hit ecosystems and people
Kansas is targeting three invasive carp species, including silver, bighead, and black carp, all introduced to the United States through aquaculture pathways decades ago. KDWP notes these fish were imported from Asia in the 1970s, escaped into Midwestern waters, and now compete with native fish for the same resources.
Their impact is not just ecological, it can be physical. KDWP warns that invasive carp can consume up to 40% of their bodyweight each day, and silver carp may leap when disturbed by boat motors, creating a real safety issue on crowded summer weekends.
Bighead carp can also reach extreme sizes, with individuals reported at over 100 pounds, and KDWP says adults can reach about 4 feet in length.
The tools behind the haul
Kansas crews are not simply netting at random. Officials describe using electrofishing, gill nets, and specialized equipment such as an “electrified dozer trawl” that stuns fish and collects them as the boat moves forward. The goal is efficiency without turning every removal day into a chaos scene on the water.
It is a game of persistence because the fish can travel. In a KDWP commission briefing, staff noted invasive carp can move more than 10 miles a day, and some studies have documented movements up to 50 miles in 24 hours, which helps explain why new pockets can appear fast after a surge or flood.
That is also why managers keep talking about barriers, deterrents, and early detection, not just harvest.
What success looks like beyond pounds removed
Officials say the removals are starting to show benefits. KDWP biologist Liam Odell said, “these removal efforts appear to have produced positive effects in Kansas waterways and for native species,” pointing to declines in targeted areas alongside the return of native fish.
But pounds are only a proxy. In KDWP briefings, staff have described invasive carp as long-lived filter feeders that are tough to catch with traditional hook-and-line methods, and they have warned that native paddlefish can end up competing with carp for plankton.
So the real checkpoint is a mix of monitoring data, native fish surveys, and whether carp stay pinned below barriers like Bowersock.
The price tag of waiting
Invasive carp management is expensive, and the bill tends to grow with every year a population becomes established. A 2025 analysis in the journal Biological Invasions estimated that by 2020, U.S. federal and state agencies had spent nearly $592 million in cumulative management costs related to invasive carp.
Kansas is not alone in feeling that squeeze. KDWP notes aquatic invasive species can degrade habitat, reduce fishing opportunities, and foul water systems by clogging intakes and damaging infrastructure, problems that can show up on a city budget as well as a weekend fishing trip. That is why prevention and cleanup are treated as part of the same job.
What you can do next time you hit the water
This is not just a government project, because carp often spread with people. KDWP tells anglers not to release invasive carp back into the water and to report catches outside known infested rivers, and it recommends freezing the fish and calling its Emporia Research Office at (620) 342-0658 when an unexpected catch turns up.
For boaters, the most effective habit is also the simplest. KDWP promotes a “Clean, Drain, Dry” routine, which focuses on removing mud and plants, draining water from bilges and livewells, and letting equipment dry before launching somewhere new, even when you are tired and just want to get home.
The press release was published by the U.S. Fish and Wildlife Service.
