News Releases

Displaying 1 - 35 of 35.

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Anglers and other users of the St. Marys Rapids, please be advised that the St. Marys Rapids flows and water levels will increase in July. As of Wednesday July 6, the St. Marys Rapids flow is expected to be approximately 786 cubic meters per second (m 3 /s) (27.8 thousand cubic feet per second (tcfs...
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Anglers and other users of the St. Marys Rapids, please be advised of the increased flows and water levels that will be experienced in the Rapids in June. After the Compensating Works gate movements scheduled for Monday June 6, the St. Marys Rapids flow is expected to be approximately 720 cubic...
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Anglers and other users of the St. Marys Rapids are advised that on Wednesday morning, May 11, 2022, Gates #9 through #12 will be raised from their current position to a setting of 33 cm (13 in) open for the remainder of the month. Gates #7 and #8 will remain at their current setting of 20 cm (8 in)...
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Lake Superior and Lake Michigan-Huron water levels are near their seasonal low point and depending on weather and water supply conditions could begin their seasonal spring rise over the coming weeks. The gate setting at the Compensating Works will be maintained at the setting equivalent to one-half...
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Weather and water supplies to Lakes Superior and Michigan-Huron were much drier than average in January. Lake Superior water levels remain below the seasonal long-term average while Lake Michigan-Huron water levels remain above the seasonal long-term average.
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The Board expects the total outflow to be 1,730 m3/s (61.1 tcfs) in January, which is as prescribed by Lake Superior Regulation Plan 2012. The gate setting at the Compensating Works will be maintained at the setting equivalent to one half gate open (Gates #7 through #10 partially open 20 cm (7.9 in)...
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Lake Superior outflows continue to be set in consideration of water levels upstream and downstream. The gate setting at the Compensating Works will be maintained at the setting equivalent to one half gate open (Gates #7 through #10 partially open 20 cm (7.9 in)). There will be no change to the...
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Lake Superior and Lake Michigan-Huron have both continued their seasonal declines in October. As a result of the continued drier than average weather and water supply conditions, water levels on Lake Superior remain slightly below the seasonal long-term average. Weather and water supply conditions...
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Anglers and other users of the St. Marys Rapids are advised that the gate setting of the Compensating Works structure at the head of the Rapids will be adjusted on September 27, 2021. The four middle gates (Gates #7 through #10) will be closed and four gates on the US side of the structure (Gates...
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(In French only) - Les conseils de régularisation des eaux des Grands Lacs de la Commission mixte internationale (CMI) vous invitent à assister à un webinaire prévu le mercredi 8 septembre de 12 h à 13 h (HAE). La séance se déroulera en français. Le Conseil international de contrôle du lac Supérieur...
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Lake Superior and Lake Michigan-Huron water levels are above their respective long-term averages. Therefore, there is a risk of shoreline erosion, lakeshore flooding, and coastal damages.
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The Board expects the total outflow to be 2,280 m3/s (80.5 tcfs) in June, which is as prescribed by Lake Superior Regulation Plan 2012. Lake Superior outflows are set in consideration of the above-average levels upstream and downstream.
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While Lake Superior and Lake Michigan-Huron water levels remain above their respective long-term averages, the risk of shoreline erosion, lakeshore flooding, and coastal damages remains.
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While Lake Superior and Lake Michigan-Huron water levels remain above average, the risk of high-water impacts remains. Lake Superior outflows continue to be set in consideration of high levels upstream and downstream. Last month, Lake Superior declined 2 cm (0.8 in), while on average it declines 1...
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The Board expects the total outflow to be 2,040 m3/s (72 tcfs) in March, which is as prescribed by Lake Superior Regulation Plan 2012. The gate setting of the control structure will be maintained at the typical winter setting equivalent to one-half gate open in March.
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The Board expects the total outflow to be 2,050 m3/s (72 tcfs) in February, which is as prescribed by Lake Superior Regulation Plan 2012. The gate setting of the control structure will be maintained at the typical winter setting equivalent to one-half gate open in February.
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Lake Superior and Lake Michigan-Huron water levels continue to decline, but are still well above average and the risk of high-water impacts remains. Lake Superior outflows continue to be set in consideration of high levels upstream and downstream. Last month, Lake Superior declined 3 cm (1.2 in)...
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The lakes are expected to continue their seasonal declines through the fall. However, water levels are expected to remain near seasonal highs and there will continue to be a significantly increased risk of shoreline erosion, lakeshore flooding and coastal damages.
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Anglers and other users of the St. Marys Rapids are advised that Gate #1, which is the northernmost gate of the compensating works structure, located closest to the Canadian shoreline at the head of the rapids, will be temporarily closed tomorrow, 9 September, to facilitate underwater safety...
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Lake Superior generally remained stable over the course of the month, which is typical for this time of year. Lake Michigan-Huron declined 4 cm (1.6 in) over the course of the month, which is the average water level decline in August. At the beginning of September, Lake Superior is 6 cm (2.4 in)...
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A public Great Lakes water levels webinar hosted by the International Joint Commission's Lake Superior Board of Control, Lake Ontario-St. Lawrence River Board and Niagara Board of Control was held July 17. This webinar provided an overview of why the Great Lakes were at their current levels and how...
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Basin conditions were generally near average or drier than average in June, around both Lake Superior and Lake Michigan-Huron. As a result, water levels did not rise as much as they typically do in June. Nonetheless, water levels are expected to remain high over at least the next few months and...
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While conditions around Lake Superior were drier than average in May, conditions were again wetter than average on Lake Michigan-Huron, driven by a couple of significant rainfall events in the middle and at the end of the month. This has resulted in additional record-high water levels, which pose a...
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Conditions across the Great Lakes were generally drier this past month and the water levels of both Lake Superior and Lake Michigan-Huron rose less than they typically do in April. Nonetheless, an exceptional volume of water remains in the system. Water levels are expected to remain high over at...
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Wet conditions returned to the Great Lakes this past month and the water levels of both Lake Superior and Lake Michigan-Huron rose slightly more than they typically do in March. An exceptional volume of water remains in the system and all of the Great Lakes remain near or above record-high water...
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Conditions across the Great Lakes were drier this past month and the water levels of both Lake Superior and Lake Michigan-Huron declined more than they typically do in February. Nonetheless, an exceptional volume of water remains in the system and all of the Great Lakes remain near or above record...
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Lake Superior and Lake Michigan-Huron water levels are above record-highs for this time of year as wet conditions persisted across the upper Great Lakes basin in January. With all of the Great Lakes near or above record-highs for this time of year, there is an exceptional volume of water in the...
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Lake Superior and Lake Michigan-Huron remain near record-highs for this time of year, but are expected to continue their seasonal declines in December. As a result, there will continue to be a significantly increased risk of shoreline erosion, lakeshore flooding and coastal damages over the next...
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The Board expects the total outflow from Lake Superior to be 2,820 m3/s in November, which is as prescribed by Lake Superior Regulation Plan 2012. The gate setting will be lowered in stages beginning in late November to allow for a gradual reduction in St. Marys Rapids flows and water levels prior...
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An on-line questionnaire has been developed that allows impacted shoreline property owners to report directly on their experiences in 2019 (https://ijc.org/en/glam/watershed/questionnaire/high-water-levels-2019).
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The International Lake Superior Board of Control (Board) expects the total outflow from Lake Superior to be 2,840 m3/s in September, which is as prescribed by Lake Superior Regulation Plan 2012. The gate setting at the Compensating Works will be maintained at the equivalent of nine gates fully open.
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The above-average levels coupled with strong winds and waves continue to result in shoreline erosion and coastal damages across the upper Great Lakes system.
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Generally wet conditions persisted across the upper Great Lakes basin in January, and water levels of Lake Superior and Lake Michigan-Huron remain well above average.
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December, like October and November, saw wet conditions across the upper Great Lakes basin, and water levels of Lake Superior and Lake Michigan-Huron remain well above average.
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The International Lake Superior Board of Control, under authority granted to it by the International Joint Commission (IJC), advises that the gate setting of the control structure at the head of the St. Marys Rapids will be reduced prior to winter, beginning next week. The gate setting will be...
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