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
4376	Fish shrinkage probed in lab	BBC News	2011-09-18	NO
4377	Salmon And Other Fish Predators Rely On No Guts, No Glory Survival Tactic	underwatertimes	2011-09-15	US
4378	Climate change boon to UK seafood	BBC News	2011-09-15	UK
4379	World's largest fishing lure, at 355 pounds, is a real whopper	petethomasoutdoors	2011-09-13	US
4380	Ancient Toothy Fish Found in Arctic—Giant Prowled Rivers	National Geographic News	2011-09-12	US
4381	The World's Worst Place To Catch Fish	Underwatertimes	2011-09-07	US
4382	Colossal Aggregations Of Giant Alien Freshwater Fish As A Potential Biogeochemical Hotspot	Underwatertimes	2011-10-06	GE
4383	Iceland joins alliance to tackle ‘ghost’ fishing gear abandoned at sea	thegrocer	2021-03-10	UK
4384	Dozens change name to salmon	Taipei Times	2021-03-18	TW
4385	Рыбаки предупредили о возможных сбоях в добыче самой дешевой рыбы	rbc	2021-03-17	RU
4386	Nearly 4 million fish killed by winter storm along Texas coast	fox4news	2021-03-10	US
4387	Scientists Discover an 81-Year-Old Snapper	hakaimagazine	2021-03-04	AU
4388	Florida biologists find a live turtle inside a fish	timesnownews	2011-09-06	US
4389	Underground For Millions Of Years, Blind Cave Fish Tell Time On Biological Clocks	Underwatertimes	2011-09-06	CA
4390	Chile Says No To Salmon Farming Off Tierra Del Fuego	Underwatertimes	2011-09-01	CL
4391	Re-Emergence Of Salmon In The Thames Not From Restocking	Underwatertimes	2011-09-02	UK
4392	Angler reels in giant 185lb catfish by himself after friends head to the bar	dailymail	2011-08-30	SP
4393	For the first time, a river is granted official rights and legal personhood in Canada	newswire	2021-02-23	CA
4394	Quebec’s Magpie River first in Canada to be granted personhood	esemag	2021-03-16	CA
4395	A Canadian River Has Been Legally Declared A Person & It's A First For This Country	narcity	2021-02-25	CA
4396	Quebec's Magpie River becomes first in Canada to be granted legal personhood	nationalobserver	2021-02-24	CA
4397	Quebec river granted legal rights as part of global personhood movement	CBC News	2021-02-28	CA
4398	We asked men with fish pictures in their Tinder profile: Why?	thetab	2021-03-03	UK
4399	Bizarre fish evolved for the oceans — but lives on land	gizmodo	2011-08-30	FM
4400	Exotic fish to replace cod	telegraph	2011-08-27	UK

175 of [220 - pages.]