Lake Erie Fact File
Water Levels Forecasted for Lake Erie
Lake Erie water levels are expected to remain 5 to12 inches below their long-term averages during the coming spring and summer. But the ups and downs of water levels are a normal part of Lake Erie’s life cycle, according to the Ohio Department of Natural Resources (ODNR).
"In reality, Lake Erie is a dynamic, constantly changing body of water," said Dave Cashell, state hydrologist at ODNR. "In the mid-1930s, the lake was nearly 2 feet below its present level. In the 1950s and again in the 1980s, it was more than 3 feet higher than its present level. We must realize that change is inevitable when dealing with Lake Erie and adapt our plans and outlooks accordingly."
Some lakefront property owners and business people who grew accustomed to consistently higher-than-average water levels during the last 30 years may
find that news difficult to accept. For them, lower water levels translate into reduced shipping revenues and difficult-to-enter marinas and boat slips. But ODNR experts encourage people concerned about present water levels to take a page from Great Lakes history before concluding that Lake Erie is suffering some sort of decline.
Officials first began measuring water levels in the Great Lakes in the mid-1800s. The present system of gauges began operating in 1918. Hydrologists have learned that lake levels fluctuate with the seasons andcan vary dramatically over longer periods of time.
Long-term monthly averages have varied more than 6 feet over the period of time records have been kept. Water levels were slightly above long-termaverages during the mid-to-late 1800s and generally below the long-term averages from about 1890 through 1967. From 1968 to 1999, levels were again generally above long-term averages. Annually, the lake also rises and falls about 18 inches with the seasons - losing water in the fall and winter through evaporation, and gaining water back during spring snowmelt and summer rains.
Short-term fluctuations, such as those that can be associated with a single severe storm, are the most dramatic changes. Because the lake is relatively shallow and lies southwest to northeast, strong southwesterly winds can blow surface water from Lake Erie’s western basin to the central and eastern basins in a matter of hours. Veteran boaters know that a storm passing through Toledo can leave dock areas standing dry in that city while creating high-water conditions in Buffalo, New York. During severestorm events, the instantaneous difference in water levels between Toledo and Buffalo can approach 16 feet!
Cashell describes the Great Lakes system as interconnected "bathtubs," with each lake lower than the next. Within each lake, waters slosh around in response to changes in wind and atmospheric pressure. Lake Superior, atabout 603 feet above sea level, is the highest. It drains into Lake Huron and Lake Michigan (considered one body of water), which in turn, drain into Lake St. Clair through the St. Clair River. Lake St. Clair drains into Lake Erie through the Detroit River. Lake Erie waters drop dramatically (about 326 feet in 35 miles!) into Lake Ontario through the Niagara River and over Niagara Falls. Lake Ontario waters travel downhill through the St. Lawrence Seaway into Montreal Harbour and the Atlantic Ocean.
About 80 percent of Lake Erie’s water flows in from the Upper Lakes through the Detroit River. Another 10 percent comes from tributary rivers and streams, with the remaining 10 percent from precipitation falling on the lake’s surface. The Detroit River inflow
is directly dependent on rain and snowfall around lakes Superior, Huron and Michigan. Unusually warm winters and dry summers in the late 1990s brought little precipitation and virtually no ice cover to the Upper Lakes, causing lake water levels to drop in those bodies of water, and subsequently, in Lake Erie. The U.S. Army Corps of Engineers, which projects Great Lakes water levels six months in advance, said in February that Lake Superior was approaching levels last seen in 1926. The recent winter did not provide enough moisture to counter all the preceding dry years.
Despite "urban legends" to the contrary, there are no man-made gates regulating the outflow of Lake Erie waters through the Niagara River. Only lakes Superior and Ontario have artificial controls to influence levels and those levels are governed by agreements with Canada, Cashell said. Lower-than-average water levels have a positive impact on many aspects of lake life. Coastal erosion has decreased and beachcombers are finding wider stretches of sand for swimming and sunbathing, according to Mike Colvin of ODNR’s Coastal Management Program.
"The lake’s shoreline provides some of the best bird watching in the Midwest," said Melissa Hathaway of the ODNR Division of Wildlife’s Lake Erie Unit. "The lower lake levels only enhance these viewingopportunities."
Jim McCormac, a botanist and bird expert with ODNR’s Division of Natural Areas & Preserves, said North American shorebirds with the longestmigration patterns like the Hudsonian godwit and long-billed dowitcher are spending more time along Ohio’s Lake Erie shore in the fall. The birds feed in the expanding marshes, building stamina for their long flights south.
New expanses of rare and endangered botanicals are finding homes in the mudflats created by lower lake levels. Most are sedges and rushes - some of the rarest plants in the Great Lakes region, McCormac added. "They grow, bear fruit and reseed on the newly exposed mud flats," McCormac said. "When the waters recover them, those seed beds will remain dormant for decades before producing another plant. They are an important part of the biological and hydrological cycle of Lake Erie."
According to the ODNR Division of Watercraft, most Lake Erie boat launches remain fully operable in these times of lower-than-normal water. Boatersshould check for the best launch areas when planning a lake outing. ODNR always advises boaters to use charts when navigating unfamiliar waters.
Boaters should be especially cautious around the islands in the western basin and when nearing shore. Areas that may have been safe to pass overin the past, may have an underwater hazard in low-water conditions. Navigation charts for Lake Erie are available at marinas, bait shops and other outlets on the north coast.
Dredging projects made necessary by receding waters require advance planning since securing mandatory dredging permits from the Ohio Environmental Protection Agency and the U.S. Army Corps of Engineers can take several months. Limited funds are available to communities and public agencies for dredging assistance through ODNR. Commercial marinas, homeowners’ associations and private clubs are ineligible.
For more information about Lake Erie’s changing waters, check the ODNR web site at www.dnr.state.oh.us or call the ODNR Coastal Services Center at 419-626-4296 or toll free at 888-644-6267.
Walleye and Perch QuotasSet for 2001
In an effort to boost Lake Erie’s walleye population, fisheries scientists, working with the Great Lakes Fishery Commission (GLFC) met in March and agreed to cut in half international harvest quotas for walleye on the lake, according to the Ohio Department of Natural Resources (ODNR).
The GLFC’s Lake Erie Committee met in March in Niagara Falls, NY and agreed to reduce the total allowable walleye harvest for the entire lake from 7.7 million in 2000 to 3.4 million fish this year.
The daily bag limit for walleye in Ohio waters of Lake Erie and its tributaries for 2001 will be four fish from March 1 through April 30 and six fish from May 1 through the last day in February 2002.
"Committee members agreed last year to set future quotas conservatively in an effort to stop declining walleye populations," said ODNR Division of Wildlife fisheries biologist Mike Costello. "Toward that goal, Ontario accepted a decrease of nearly 2 million walleyes, confirming their commitment to rebuilding populations of the lake’s most popular game fish."
The Lake Erie Committee is made up of fisheries managers from Ohio, Michigan, Pennsylvania, New York and Ontario. The group meets annually to determine the status of Lake Erie fish stocks and, establish international harvest quotas for each of those jurisdictions surrounding the lake.
"We are committed to doing everything we can to improve the Lake Erie fishery for the future," Costello said. "It won’t happen overnight but we’ve laid the groundwork and shown that the entire team can work together to protect this important resource."
Walleye harvest quotas are determined by a formula base on surface area within each jurisdiction.
Ohio and Ontario receive the majority of the walleye allocation catch for Lake Erie. Of the 2001 quota of 3.04 million fish, Ohio’s share is just over 1.7 million, about 51 percent of the total. Ontario’s share is about 1.4 million walleyes, about 43 percent of the total allocation.
"Our focus is to manage for improved growth in the walleye population," said Costello. "Supporting this effort, both Ontario and Michigan have made similar changes in their bag limits."
Based on the strength of the 1999 walleye hatch, fisheries biologists predict a brighter future for Lake Erie walleye fishing.
"The new quotas positively impact the ’99 year class fish, enabling them to contribute to the fishery for a number of years," Costello said.
The total allowable catch for yellow perch in Lake Erie for 2001 was set at 7a.1 million pounds, up slightly from 6.57 million in 2000. Yellow perch quotas for individual jurisdictions surrounding the lake are based on a different sharing formula than walleye, involving surface area and past fishing performance.
Ohio’s share of the 2001 perch allocation is slightly more than 3 million pounds. Ontario will receive about 3.7 million pounds and Michigan, Pennsylvania and News York will share the remainder.
Ohio’s portion of the yellow perch quota is then allocated between sport and commercial fisheries. Sport anglers are allocated 64 percent of the Ohio quota, and commercial anglers 36 percent.
"Yellow perch stocks I the central basin are strong but we still have some concerns in the western and eastern basins of Lake Erie," said Costello.
The daily bag limit for sport anglers remains at 30 perch per angler and existing commercial fishery regulations also remain in effect.
For further information contact: Mike Costello, ODNR Division of Wildlife (614) 265-6349 or Andy Ware, ODNR Media Relations (614) 265-6882