IJC releases
Eleventh Biennial Report on Great Lakes Water Quality
In 1972 Canada and the United States signed the
Great Lakes Water Quality Agreement
and pledged to restore the Great Lakes ecosystem to physical, chemical and
biological health and maintain this shared but threatened environmental
treasure for future generations. Progress has been made; however, achievement
toward restoration has been slow and many challenges remain.
In the just-released
Eleventh Biennial Report on Great Lakes Water Quality
, the IJC highlights three critical issues our two nations must address in
order to restore this world-class ecosystem: cleaning up sediment contaminated
with toxic substances, preventing further introductions of alien invasive
species, and improving the monitoring and reporting of ecosystem health,
especially through the use of understandable ecological
“indicators.”
The report warns that research continues to show toxic substances ranging from
pesticides to heavy metals to PCBs continue to contaminate the Great Lakes
ecosystem and can injure human health. The primary source is pollutants found
in the sediment and the primary pathway for exposure is the consumption of
fish.
In 1987, Canada and the U.S. agreed to attack the problem of highly polluted
locations in a structured manner. Forty-three Areas of Concern were designated,
with the understanding that each country would develop Remedial Action Plans
(RAPs) to clean up and restore these areas to health. But progress has been
slow, hampered by inadequate funding, a lack of leadership for RAP
implementation, and in many cases, the sheer size of the problem - the Areas of
Concern contain millions of cubic meters of contaminated sediment. We have
often seen several years pass before remedial action is taken, even while
research showing subtle but persistent human health injuries from eating
contaminated fish, as well as impacts on fish, wildlife, and the ecosystem
continue. Fifteen years of experience has proven that the current regulatory
focus and funding are inadequate, and that the governments need to do far more.
Alien invasive species, transferred, from foreign ecosystems, can thrive in the
Great Lakes, unhindered by any natural controls, such as predators they might
confront in native ecosystems. Exploding zebra mussel populations, for
instance, have caused millions of dollars of damage to water structures and
great ecological harm, and they are only one of 160 non-indigenous species now
inhabiting the system. The next alien species to enter the lakes could cause
even greater damage. The U.S. and Canada have responded by developing
regulations and procedures surrounding ballast water discharge from ships
entering the ecosystem through the St. Lawrence River, because ballast water is
the primary source of the threat. But risks remain because the majority of
sips entering the Great Lakes system can legally claim “no ballast on
board” and thereby are exempt from current regulation. However, they
still harbour alien species in their “empty” ballast tanks, and
in the bio-films contaminating hulls or anchor chains. In light of the high
risk, we believe our two national governments must urgently take more
aggressive steps to prevent future alien species introductions, including new
rules and programs to assure that “no ballast on board” ships do
not biologically contaminate our waters.
Finally, using measures of “Drinkability,”
“Swimability,” and “Fishability,” it becomes clear
that the Great Lakes remain a good source of treatable drinking water, but some
areas remain unsafe for swimming and, in all of the five lakes, many fish are
subject to restrictions on the quantity that may be eaten. These broad
indicators of ecosystem health will help policy makers and the public track
changes in environmental quality and allow regulatory agencies to report on
them meaningfully. Because so many uncertainties about the ecological state of
the lakes remain, funding for research and monitoring, using a variety of
indicators, both broad and finely focused, needs to be increased.
The Great Lakes Water Quality Agreement continues to stand out as a beacon to
guide stewardship of this magnificent ecosystem. The benefits of investing in
the largest freshwater ecosystem on earth clearly are compelling: our health,
our economy and our environment will all profit. The IJC calls on the
governments to intensify their work and their investments to protect our
shared, unique, invaluable shared resource.
Second year of flooding for Rainy Lake
After seeing Rainy Lake and Namakan Lake rise in 2001 to their highest levels
since 1968, basin residents in Minnesota and Ontario endured a second round of
flooding in 2002.
June 2002 was one of the wettest months in northern Minnesota's history, with
some northwestern Minnesota communities receiving in two days more than half
the rainfall they would typically see in a year. Communities in Ontario were
similarly affected. Swollen streams washed out roads and bridges and fed the
larger lakes and rivers. The IJC ordered reduced outflows from Rainy Lake for a
few days to allow the downstream town of Rainy River to fend off flooding from
the Rainy River, then later ordered reduced outflows from Namakan Lake for a
few weeks to ease flooding concerns downstream on Rainy Lake. Ultimately, Rainy
Lake peak levels were significantly higher than in 2001 and well above the
emergency levels defined by the IJC. Namakan Lake levels also peaked above the
IJC-defined emergency levels, but at lower levels than seen last year. By the
end of July, both lakes had returned to normal summer levels.
<
A flooded dock, submerged mermaid sculpture,
and sunset view of Pine Island, Rainy Lake.
Credit (with thanks): Mary Lysne, Rainy Lake Conservancy
Some residents have questioned the impacts of the IJC's January 2000 adoptionof
new operating rules for Rainy and Namakan Lake. The IJC adopted these new rules
to continue to carry out its responsibilities for avoiding emergency conditions
by instituting revised rule curves and other requirements that provide a
careful balance between upstream and downstream concerns, and among the various
interests, including environmental concerns, hydropower, flood risk and
boating. The IJC's International Rainy Lake Board of Control, which played a
very active role during the flood event, estimated that these new rule curves
likely increased peak flood levels on Rainy Lake by about two inches. Holding
back water to help out the town of Rainy River likely increased Rainy Lake
levels by about one to two inches, while holding back water on Namakan Lake
likely lowered Rainy Lake levels by about one inch. Recognizing that similar
and more extreme rainfall events will occur again, the IJC and its board are
continuing to examine issues related to flooding, flood impacts and preparing
the community to manage future floods.
Join us in Ann Arbor!
Credit: University of Michigan
Credit: Ann Arbor Area Convention and Visitors Bureau
The IJC cordially invites you to join us at our 2003 Biennial Meeting on Great
Lakes Water Quality to take place in Ann Arbor, Michigan, September 19-20,
2003. This Biennial Meeting is truly a forum for the Great Lakes and the people
who care about their future. Our goal is to provide a forum that energizes and
educates the Great Lakes basin community to work together along with
governments at all levels to carry out the purpose of the Great Lakes Water
Quality Agreement. It is a forum for the people of the basin to come together
and celebrate progress, assess and question current action, discuss new and
emerging issues regarding the cleanup and restoration of the Great Lakes, and
share successes and road blocks toward restoration of Areas of Concern.
Meeting details will be posted on at www.ijc.org as soon as they are available.
IJC Commissioners alert governments to Asian carp threat
Credit: Andy Whitcomb
In July the IJC wrote to the U.S. and Canadian governments alerting them to a
critical threat to the Great Lakes posed by species of an invasive fish, the
Asian carp. Two species of Asian carp, the bighead carp and the silver carp are
on the verge of entering Lake Michigan through the Chicago Sanitary and Ship
Canal. They have been found in abundance in the Illinois River and caught as
far north as the confluence with the Kankakee River. Three species of carp,
native to Siberia and China, were imported in the early 1970s for use in the
aquaculture industry in Arkansas. The bighead and silver carp are used to
control algae and the black carp is used to control snails in aquaculture
ponds. During floods in the early 1990s, the silver and bighead carp escaped
from aquaculture ponds and have rapidly multiplied in the Mississippi River
watershed.
Asian carp are highly prolific; large adult females may each lay as many as a
million eggs. They feed on plankton, consuming as much as 40 percent of their
body weight in food each day, and grow extremely fast, reaching weights of 12
pounds n their first year. Adults can grow to approximately four feet long and
reach maximum weights of 50 to 110 pounds. All are well suited to Great Lakes
water temperatures and are highly likely to thrive in that environment. They
compete directly with native plankton feeders and with virtually all species of
young fish for food, quickly growing too large for native predators. In certain
sections of the Mississippi River they have become the most common species of
fish. The fish's unusual behavior of unexpectedly leaping six to eight feet
into the air -- and at times landing in boats -- has attracted much attention;
however the biggest threat from these fish is the disruption of the Great Lakes
food chain and crowding out of native species.
The major barrier to invasive fish, such as Asian carp, entering the Great
Lakes from the Mississippi River Basin is an electrical dispersal barrier
located in the Chicago Sanitary and Ship Canal near Romeoville, Illinois. This
barrier uses a micro-pulsed DC electric field. Barriers of this type have been
used at power plants to deter fish from entering intakes and in irrigation
canals to contain plant-eating grass carp. It became operational in April 2002
and preliminary tests show that the barrier is effective at stopping fish from
crossing through. However, the existing barrier array is a temporary
arrangement with electrode cables that are expected to last no longer than two
or three years. At that time, the barrier will have to be shut off to replace
the cables. There is also no emergency back-up power source to use in case of a
power failure, so the risk of failure and fish getting through at this point is
unacceptably high.
The IJC is urging the U.S. government to fund improvements to the existing
barrier and for construction of a second barrier. In addition to calling for
improvements to the existing barrier, the Commissioners stress the importance
of public education to reduce the threat of introduction by other means such as
intentional release of live fish imported for food and dumping of bait buckets.
The IJC and the Great Lakes Fisheries Commission hosted a roundtable discussion
in Chicago on August 16, 2002 with experts from 15 different municipal, state
and federal agencies. The experts examined the funding needs and critical steps
required to halt the spread of Asian carp, and underscored the need for swift
action. More information about this important initiative is posted on the IJC
website at:
http://www.ijc.org/rel/news/020711.html
.
IJC Commissioner Jack Blaney receives award
On September 19, 2002, IJC Commission, Dr. Jack Blaney received the Order of
British Columbia, which recognizes excellence by rewarding the accomplishments
of outstanding British Columbians who have made a difference to the lives of
its people and strengthened their shared heritage.
In Memorium
The International Joint Commission notes with sorrow the death of
Dr. Gale Meyer
, from the Minnesota Department of Natural Resources, who served the Commission
on its International Red River Board.
IJC board member Kathy Tonnessen
receives national research award
The National Park Service’s Director’s Award for Natural
Resources Research was accorded to Kathy Tonnessen this summer for her
pioneering studies on air pollutant deposition and for matching academic
researchers with field research opportunities in Western national parks.
Tonnessen, a member of the IJC’s International Air Quality Advisory
Board, works for the National Park Service’s Air Resources Division and
is stationed at the University of Montana in Missoula. Her work established the
need for long-term monitoring of the air above parks in the U.S. and the need
to pay attention to particular issues such as nitrogen levels.
People
IJC welcomes the recent appointments to its boards
.