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Tag Archives: rotenone

Two Rivers Trout Lake fish renovation completed

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LINCOLN, Neb. – Lake 5 at Two Rivers State Recreation Area has been renovated to remove unwanted species that invaded the lake during the 2019 spring flooding, which connected the lake to the Platte River. The 9-acre lake, commonly known as the Trout Lake, was treated Aug. 17 with rotenone, a toxicant used to eliminate fish. Biologists sampled multiple undesirable fish species during post-flood assessments, which led to poor water quality. Anglers should expect improved water quality and fishing conditions …

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Hackberry Lake to be chemically renovated Aug. 9

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LINCOLN, Neb. – Hackberry Lake on the Valentine National Wildlife Refuge will be chemically renovated the week of Aug. 9 as part of the ongoing Aquatic Habitat Project on the refuge. The rotenone treatment is aimed to eliminate common carp, an undesirable species detrimental to aquatic habitat, water quality and sport fish populations. Restocking will occur later this fall. Liberalized fishing regulations have been in effect the past two years on Hackberry, where length limits were rescinded but daily bag …

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Louisville Lake 1A fish renovation completed

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LINCOLN, Neb. – Lake 1A at Louisville State Recreation Area has been renovated to remove rough fish, especially silver carp. Lake 1A and Lake 1, which will be renovated the week of Sept. 13, were invaded by unwanted species during the 2019 spring flooding of the Platte River. The 1-acre Lake 1A was treated Sept. 8 with rotenone, which is a toxicant used to eliminate fish. The lake was found to contain more than 200 silver carp of at least …

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Rock Creek Lake to be drawn down for fish renovation

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LINCOLN, Neb. – Rock Creek Lake will be drawn down over the next few months in preparation for a fish renovation. The project at the Dundy County lake aims to improve water quality and sportfish potential by eliminating gizzard shad. When the water level is down, cedar trees will be used to build fish habitat structures in the lakebed. Rotenone will be applied this fall to remove undesirable fish. Sport fish will be restocked as the lake refills before winter. …

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Renovations

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Last week I had a boring blog post about fisheries science.  It was a fundamental description of what a “fishery” is and how pointy-headed biologists manage fisheries.  Part of the reason I posted that was because I wanted to lay some ground work for additional posts about other fisheries management topics.  So, let me reconvene the Fisheries Science 101 class again today and talk about a subject that I believe is misunderstood by some. . . renovations. Let me start …

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Rotenone to remove common carp in Pelican Lake renovation

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LINCOLN, Neb. – Rotenone will be applied Sept. 6 at Pelican Lake on the Valentine National Wildlife Refuge (NWR) south of Valentine to remove common carp. The Nebraska Game and Parks Commission and U.S. Fish and Wildlife Service (USFWS) will apply rotenone, which is a toxicant often used by biologists to eliminate unwanted fish species, as part of the renovation of the lake. In recent months, liberalized fishing regulations have allowed anglers to remove many sport fish from Pelican, and …

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Gizzard shad targeted for removal from Wehrspann Lake

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LINCOLN – The chemical rotenone has been applied at Omaha’s Wehrspann Lake in order to remove gizzard shad. Gizzard shad are susceptible to a low dose of rotenone while fish such as largemouth bass, bluegill, channel catfish and crappie are less affected. Low dosages of rotenone are done at low water temperatures to increase its effectiveness on shad and lower impacts on nontarget species. “Gizzard shad are targeted for removal because they are a detrimental species in small reservoirs such …

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Lake Yankton Renovation, Postscript

A couple of weeks ago I blogged about the Lake Yankton Renovation.  That fisheries management project went off on schedule last week in spite of cool and rainy conditions.   Right now I want to show you a few pictures of dead fish because it demonstrates exactly why we do rotenone renovations, why we eliminate all fish in a body of water, and then re-stock. It is somewhat ironic that fisheries biologists would purposely, intentionally kill fish, but that is …

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Lake Yankton Renovation

There was a news release on the Lake Yankton rotenone renovation a couple of weeks ago: Lake Yankton Fishery Renovation Set to Begin Posted by: Jerry Kane August 12, 2014 in NGPC News LINCOLN – A renovation of the existing fish population in Lake Yankton, located below Gavins Point Dam, is set to occur on Sept. 10. The project includes drawing Lake Yankton’s water level down four feet and applying the chemical rotenone to eliminate the fish population. Record Missouri River flooding in 2011 allowed …

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Pawnee Renovation

A few weeks ago there was a news release about a fisheries management project being conducted at Pawnee Reservoir west of Lincoln: LINCOLN – A chemical was applied at Pawnee Lake in an attempt to remove unwanted white perch and gizzard shad from the fish population, according to the Nebraska Game and Parks Commission. Rotenone typically is used to eliminate all fish from a body of water; however, a lower concentration of the chemical was applied Nov. 12-13 at Pawnee …

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