A study led by University of Michigan researchers found that despite a drop-off in plankton, the tiny plants and animals on which bighead and silver carp typically feed, the lake has enough dietary options to sustain individual fish that venture away from nutrient-rich shoreline areas where most would congregate.
U.S. Army Corps of Engineers
The plan would use technology such as underwater loudspeakers, electric cables and air bubble curtains to deter the fish from migrating between the Illinois River and Lake Michigan through Chicago-area waterways.
Location of choice is considered a crucial choke point where the invasive carp could be prevented from migrating upstream toward the lake.
If the 117-year-old dam were to fail, it would allow the invasive species nearly 1,300 additional miles of main-stem and tributary spawning grounds.
The Corps’ new plan is similar to a draft from August 2017, but the estimated price tag has jumped from $275 million to nearly $778 million.
Judge says environmental groups failed to prove there were practical alternatives to the $59 million dam serving farmers in western North Dakota and eastern Montana.
Corps had told Louisiana officials it could need until October 2022 to assess environmental impact of a project to create new coastal land by enabling Mississippi River to push mud and sand into open water. New deadline is November 2020.
ASTORIA, Ore. — The U.S. Army Corps of Engineers wants to remove 500 eggs from double-crested cormorant nests as part of a long-term management plan to protect juvenile salmon being eaten by the cormorants in the Columbia River. The Corps is in the fourth year of a five-year plan to cut the cormorant population on East Sand Island at the…
State biologists fear the winter steelhead could go extinct in the Molalla, Santiam, McKenzie and Middle Fork rivers – four key tributaries to the Willamette River.
TRAVERSE CITY, Mich. — Some members of Congress want a one-year deadline for completing a federal study on keeping Asian carp out of the Great Lakes by strengthening defenses on a crucial Illinois waterway. In a letter to heads of House spending committees, 26 lawmakers from Great Lakes states said the next federal budget should order the U.S. Army Corps…
Will offer a combination of solutions to reduce the risk of invasive carp from entering the Great Lakes at the Brandon Road Lock & Dam in Joliet, Ill.
It predicts Lake Superior will break a record high level set in the mid-1980s; environmental regulators warn of shoreline erosion in some places on Great Lakes.
Water for the Lower Illinois has spun through a legal, regulatory and financial morass for decades and, finally, this deadline may push it to where a permanent solution must be found.
Feral swine can cause extensive damage to riparian habitats while searching for food, and are known carriers of leptospirosis, salmonella and E-coli.LAKE HAVASU CITY, Ariz. — U.S. Department of Agriculture aerial sharpshooters are returning to the Lake Havasu National Wildlife Refuge for a second attempt to exterminate feral hogs at the refuge along the Colorado River. However, the facility’s manager…
A lock and dam near Burlington, Iowa, recently saw 491 eagles, up from 156 a week earlier.
TRAVERSE CITY, Mich. — Attorneys general from three states say a $275 million federal plan for keeping Asian carp from migrating into the Great Lakes is too pricey and rejects the most effective solution. The U.S. Army Corps of Engineers is recommending technologies such as electric barriers and water cannons at the Brandon Road Lock and Dam near Joliet, Illinois,…
TRAVERSE CITY, Mich. — Members of Congress and Great Lakes advocacy groups are pressing the U.S. Army Corps of Engineers to strengthen defenses against Asian carp at a crucial choke point. The Corps is considering a $275 million plan to bolster the Brandon Road Lock and Dam near Joliet, Illinois, with devices such as water jets and noisemakers to prevent…
This silver carp was caught in a gill net by commercial fishermen on June 22, 2017, a mere nine miles from Lake Michigan. (Photo courtesy of USFWS)NEW ORLEANS — A business lobbying organization in Louisiana is expressing concerns about proposals to block an invasive species of fish from the Great Lakes. The Louisiana Association of Business and Industry has released a letter…
The water level at Lake Odessa is managed to mirror Mother Nature. Summer drawdowns expose mudflats that immediately vegetate with moist-soil plants. Water is allowed to gradually return to the newly established vegetation, creating a buffet for migrating birds. (Photo courtesy of the Iowa DNR)Sitting along the west bank of the Mississippi River in Louisa County, Lake Odessa, with its…
Investigation suggests carp somehow evaded three electric barriers 37 miles from the lake. But officials say they’re not sure how it happened.
Proposes a $275 million array of technological and structural upgrades at a crucial site in Illinois to prevent invasive Asian carp from reaching the Great Lakes and its vulnerable fish populations.
The corps says the report involving Illinois’ Brandon Road Lock and Dam will be made public Aug. 7.
Recently finalized conservation strategy will support continued economic growth through proactive habitat conservation across public and private lands.
The fish are cut off from their spawning grounds by a wood-and-rock irrigation dam in eastern Montana. They now number about 125 wild fish, and U.S. government officials have acknowledged that the species could go extinct if action isn’t taken.
Ohio Lake Erie Commission in charge of seeing that the state reaches its goal of a 40 percent reduction of phosphorus going into western Lake Erie within the next 10 years.
U.S. Army Corps of Engineers will use funds for herbicide treatment of hydrilla in Cayuga Lake.