Notice: Menasha Lock Closed as of May 12, 2007

Notice: Menasha Lock Closed

The Menasha lock has been closed as of Saturday May 12th.

The Menasha lock closed at the request of the DNR after the discovery of a virus in fish that were harvested in Little Lake Butte des Morts in Menasha.

Official release #1)

(Appleton, WI) The Fox River Navigational System Authority suspended the operation of the Menasha Lock today in response to a report that the Viral Hemorrhagic Septicemia (VHS) virus was preliminarily discovered in a fish sample taken from Little Lake Butte des Morts earlier this month.Two samples of freshwater drum, (sheepshead), were collected on May 2, 2007 from Little Lake Butte de Morts by DNR fisheries staff. On May 11th the University of Wisconsin Veterinary Diagnostic Lab informed the DNR that the samples tested positive for VHS.

Additional testing is being done to confirm the presence of the virus.“Protecting our waterways and our fisheries from Aquatic Invasive Species has been the number one pledge of the Navigational Authority since work began to restore and operate the 150 year old historic lock system on the lower Fox River,” said Bob Stark, chairman of the Authority. “When we received word that a preliminary positive test for the VHS virus was reported in Little Lake Butte des Morts, our immediate response must be to honor that pledge and to do what we can to fight the spread of AIS,” he added. “Therefore, I have ordered the Menasha Lock to be closed and not to be operated until further notice.”According to the DNR it is not known how the virus entered Little Lake Butte des Morts. The virus is carried in live and dead fish and on fish eggs.

Equipment that comes into contact with fish (live wells, bait buckets, nets and the like) is also a possible vector. Additional testing of fish in other areas is now being done, including Lake Winnebago. The virus poses no risk to human health.The DNR is asking all anglers, boaters and others using the water to take voluntary steps to prevent the spread of this deadly disease. The preliminary message is that all anglers and boaters need to take personal responsibility for not spreading this virus (and other invasive species) by:

• NEVER moving live fish or fish eggs (including bait) to other waters

• ALWAYS draining all water from their boats after use

• ALWAYS obtaining bait minnows from approved sources (WI bait dealers or harvest yourself in the water you'll be fishing)

• RINSE the boat with hot water or let it dry in the sun for 5 days before moving to new waters

• Clean equipment (live wells, nets etc) with a bleach solution, (1/3 cup bleach to 5 gallons of water, in contact with equipment for 5 minutes)

Notice of the Menasha Lock closure will be sent to boat clubs and marinas on the system.

Questions regarding the operational status of the Menasha Lock can be directed to Harlan Kiesow, CEO of the Fox River Navigational System Authority at (920)759-9833.

Release #2)

DATE: May 12, 2007
CONTACT: Mike Staggs, Fisheries Director, (608)220-2609George Boronow, Regional Fisheries Coordinator, (920)662-5426
SUBJECT: Fish likely infected with deadly virus found in Little Lake Butte des Morts;Menasha Lock closed; Public asked to take steps to stop the spread

MADISON – The Department of Natural Resources announced Saturday that two fish from Little Lake Butte des Morts in the Lake Winnebago chain of lakes have preliminarily tested positive for the deadly fish virus called viral hemorrhagic septicemia or (VHS).

Additional dead fish samples taken from Lake Winnebago, itself, appear to have the virus.

Though VHS is not a health threat for people who eat or handle fish infected with the virus, it can infect more than 25 game fish, panfish and bait fish species. State fish managers had suspected it to be present in Lake Michigan and possibly in Lake Superior and in the Mississippi River. This would be the first infection to be confirmed in Wisconsin inland waters. Wisconsin recently enacted emergency rules for boaters, anglers and people who harvest wild bait to prevent the spread of VHS in inland waters http://dnr.wi.gov/org/caer/ce/news/rbnews/BreakingNews_Lookup.asp?id=497

“This is a major fish health crisis,” said Fisheries Director Mike Staggs, “We have to take aggressive steps now and enlist the help of the public to stop this spread.” Fish managers met Saturday to implement immediate steps to deal with the infection and limit its spread. DNR asked the Fox Locks Authority to close the Menasha Lock immediately and to keep it closed until more information about the spread of the disease could be confirmed; boaters can expect to be turned back from the lock starting today. In addition, DNR began the process of posting all boat launches with actions boaters should take to avoid spreading the disease. “We need to err on every possible side of caution,” Staggs said. “Believe me, nobody wants to see this disease get into more of our lakes. Do not take live fish (including unused bait minnows) away from the landing or shore. Drain all water from bilges, bait buckets, live wells, and other containers when leaving the landing or shore.” Little Lake Butte des Morts is downstream from Lake Winnebago and separated by one dam and one functioning lock, which has now been closed. The Lake Winnebago chain is home to Wisconsin’s unique sturgeon population. On May 11, 2007 the University of Wisconsin Veterinary Diagnostic Lab (WVDL) informed DNR that two samples of freshwater drum taken from Little Lake Butte des Morts on May 2, 2007 had tested positive for VHS. The samples have been sent to an approved federal lab for confirmation. The fish were collected by DNR fisheries staff during muskellunge spawning netting and were submitted for testing because they had shown external signs of VHS. Since that time, DNR has been receiving reports of hundreds of freshwater drum dying on Lake Winnebago, itself. On May 9 and 10 samples of those dead fish were sent to WVDL for testing. A visual inspection of the Lake Winnebago fish by DNR’s certified fish health inspector showed the same external signs of VHS as the Little Lake Butte des Morts fish. Also the DNR staff that collected the fish on Little Lake Butte des Morts reported seeing dead and dying drum washing over the dam separating that water from Lake Winnebago. Because the virus can infect so many different ages and species of fish, VHS could spread more quickly in inland lakes, which are much smaller than the Great Lakes, potentially devastating fish populations and fishing opportunities. Walleye, spotted musky, yellow perch, bluegill and northern pike are all susceptible to the virus, as are common bait species such as emerald and spot-tail shiners.

DNR is appealing to anglers, boaters and other water users to help prevent the further spread of VHS by taking a few simple steps:

• Never move live fish or fish eggs to other waters and always buy bait minnows only from Wisconsin bait dealers because bait from other states may not have been tested for VHS. These steps are required by the new emergency rules.

• Inspect boat, trailer and equipment and remove visible aquatic plants, animals, and mud before leaving the lake launch.

• Drain water from boat, motor, bilge, live wells, and bait containers before leaving a lake. This step is recommended for boaters on all waters and is required under the emergency rules for boaters on the Great Lakes and the Mississippi River and their tributaries up to the first dam.

• Dispose of leftover bait in the trash, not in the water. Do not take live fish or live fish eggs away from the boat landing.

• Rinse boat and recreational equipment with hot water OR dry for at least five days.

• Report large numbers of dead fish or fish with bloody spots to your local DNR fish biologist or conservation warden.

Wisconsin already has taken steps to deal with VHS. The state Natural Resources Board on Wednesday, April 4, unanimously passed emergency rules prohibiting anglers and boaters from moving live fish, and requiring them to drain their boats and livewells, before leaving Wisconsin’s Great Lakes waters, the Mississippi River and those waters’ tributaries up to the first dam.

Fishing in Wisconsin is a $2.3 billion industry.

More information on aquatic invasive species and Wisconsin’s programs to prevent their spread is available on the DNR Web site.


For more information about VHS please see http://dnr.wi.gov/fish/pages/vhs.html