Corps scrambling to turn up voltage on carp barrier

Corps scrambling to turn up voltage on carp barrier

By Dan Egan

Source: Journal Sentinel

11/8/2009

The U.S. Army Corps of Engineers is scrambling to turn up the voltage on its new fish barrier on the Chicago Sanitary and Ship Canal to try to keep advancing Asian carp from spilling into Lake Michigan.

The new barrier was turned on this year after nearly three years of safety tests. But the Army Corps operates it at only about a quarter of its capacity because of a fear that at full strength it could cause sparks - and perhaps explosions - on barges traveling the canal.

The problem is research shows the existing voltage at the barrier - 1 volt per inch - is not strong enough to turn back all sizes of Asian carp.

After last week's news that the monstrous jumping silver carp are likely within about seven miles of the fish-zapping contraption, the Army Corps said Tuesday that it is going to begin a new round of tests to determine whether it's safe to operate at double its current voltage.

The Army Corps says new research indicates that 2 volts per inch is strong enough to repel all sizes of Asian carp; the barrier was designed to operate as high as 4 volts per inch.

Lake Michigan

Carp, Grass

Continue...

News Id		Source	Stamp	country
4301	N.S. rejects calls for moratorium on fish farming	CBC News	2012-03-15	CA
4302	Florida Law Makes Serving Local Fish an Increasing Challenge	browardpalmbeach	2012-03-15	US
4303	Japan's Tsunami-Stricken Fishermen Chart New Course		2012-03-14	JP
4304	Malaysian fisherman released after three-and-half-year prison sentence	the borneo post	2012-03-13	MY
4305	St. Lawrence River named best place to fish in the country	7 News	2021-03-20	US
4306	Historic River Pollution Threatens Coastal Great Lakes Fish	Associated Press	2021-03-28	US
4307	Black fish was rife in industry across Scotland for decades, says convicted fisherman	shetlandtimes	2012-03-02	UK
4308	What Makes A Robot Fish Attractive? Hint: It's In The Moves	Underwatertimes	2012-03-01	US
4309	Puffer fish chases laser in viral video	Kim I. Hartman	2012-02-25	US
4310	Robot fish prototype leads school of real fish behind it	theverge	2012-02-24	US
4311	Royal fish returns after 46 years at sea	independent	2012-02-19	IE
4312	Fish hybridise themselves extinct in Alpine lakes	newscientist	2012-02-16	CH
4313	Marine Scientists Awarded Grant To Study Ciguatera Fish Poisoning	underwatertimes	2012-02-15	US
4314	First-time angler catches record-breaking fish in English Channel	metro	2012-02-15	UK
4315	Resident recounts the trip water takes from local hills to the ocean	VMS	2016-07-13	CA
4316	A Community Coming Together for Kokanee Conservation	bcfishn	2021-03-28	CA
4317	Salmon farms instigate open door policy for welfare inspectors	The Fish Site	2021-03-25	UK
4318	Reducing global warming matters for freshwater fish species	Radboud University Nijmegen	2021-03-15	NL
4319	Indiana angler catches record-breaking whitefish	foxnews	2021-03-22	US
4320	Missouri angler catches 112-pound invasive black carp	foxnews	2021-03-26	US
4321	Tribes Call on Biden, Congress to Remove Snake River Dams	Associated Press	2021-03-25	CA
4322	Fisherman in Ukraine reels in boy, 11, who got himself stuck on sheet of ice, video shows	foxnews	2021-03-24	UA
4323	Scottish fish farming companies given millions in grants despite huge profits	thenational	2021-03-14	UK
4324	Anti-Freeze Fish Of Antarctica Threatened By Climate Change	Underwatertimes	2012-02-13	CA
4325	Petition Seeks International Investigation Of Canadas Farmed Fish Operations	underwatertimes	2012-02-07	CA

172 of [220 - pages.]