USACE. Graph Credit: U.S. Department of the Interior, For more information on how to read the USACE water level charts like the one above, check out the, Celebrating 40 Years of Protecting Northern Michigan's Water Resources, Great Lakes Restoration Initiative Projects, Stormwater Management and Green Infrastructure Tools, Wetland Management, Creation, and Restoration Tools, Agreements between Enbridge and the State of Michigan, Northern Michigan Pipeline Symposium (2014), Participating Agencies - Pipeline Symposium, Northern Michigan Pipeline Workshop (2015), Pipeline Improvement and Preventing Spills Act. 2021 jan 1987 1935 feb 1987 1936 mar 1986 1934 apr 1934 may 2019 1934 lake erie chart datum 569.2 feet (173.5 meters) lake erie water levels - december 2020 legend lake levels recorded projected average ** maximum ** 1985 1985 1973 1973 minimum ** 1936 1934 1926 1934 ** average, maximum and minimum for period 1918-2019. Marine Weather for Canada. How to use the model predictions of lake level change Example: What do the models predict the water levels will be on Lakes Michigan and Huron in 2030? Great Lakes Marine Weather Portal - Includes point forecasts. Tides/Water Levels Water Levels; NOAA Tide Predictions; Harmonic Constituents The long-term average for Lake Michigan and Lake Huron — which are listed together because the levels on each body move together — is 579.36 feet. Snow showers developing late. ... Detroit, MI 48226. For the official 6-month forecast of Great Lakes water levels, see the Monthly Bulletin of Great Lakes Water Levels. For October 2nd, 2020 Snowpack is 79% of avg TotalPrecip is 20.00% of avg Lake Powell is currently 463.83 feet deep at the dam: Water Summary Today is day 2 of 365 for the Water Year 2021. It’s even with the level of October 3, 2019 and it’s 8″ below the record high water level of October 1986. In general, the Great Lakes system experienced extremely low levels in the late 1920s, mid-1930s, and the mid-1960s. By January 4 th, water levels for Lakes Superior, Michigan-Huron, and St. Clair are forecast to be 2 to 3 inches below their December 4 th projected levels. The six-month water level forecasts show a high-end forecast that could surpass all other modern water levels for some of the Great Lakes. Iroquois, Thunder Bay, Michipicoten • Lakes Michigan -Huron: Harbor Beach, Ludington, Mackinaw City, Milwaukee, Tobermory, Thessalon • Lake St. Clair: St. Clair Shores, Belle River • Lake Erie: For information, contact hhpm@usace.army.mil. Daily Average Water Levels Based on Lake-Wide Average Network • Lake Superior: Duluth, Marquette, Pt. GRONEWOLD, A.D., T.S. Great Lakes Marine Weather Portal - Includes point forecasts. Daily Average Water Levels Based on Lake-Wide Average Network • Lake Superior: Duluth, Marquette, Pt. IGLD consists of benchmarks at various locations on the lakes and St. Lawrence River that roughly coincides with sea level. Lake Michigan–Huron’s beginning-of-March level was 94 cm above average and 38 cm higher than its level at the same time last year. The record low lake level for Lake Michigan-Huron was 576.0, International Great Lakes Datum (IGLD) 1985, in March 1964 (preliminary data indicates we reached a new record low in January 2013) and the record high was 582.3, IGLD 1985, in October 1986. NOTICE: Data displayed in these graphics are experimental (see disclaimer at bottom of page). Table 2 shows that water levels could be 0.2 feet higher, or 2.4 feet lower, than 1.6 feet above Low Water Datum (Chart Datum). ... and meters above (+) or below (-) Chart Datum. (2017). Rather, this product is meant to illustrate outcomes that would occur under historical weather and water supply condition, with scenarios chosen based on similarities to recent conditions. Nearshore Marine Forecasts. In May, the average water levels in Lake St. Clair were 4 inches above May 2019. The lake level is 10″ higher than the August average level and 2″ below the highest August level ever set last year (in 2019). Chart Datum, also known as Low Water Datum, is a reference plane on each lake to which water depth and Federal navigation improvement depths on navigation charts are referred. Elevated lake levels increase impacts along the shore during storm events. The water level of Lake Superior is expected to peak next month before entering its period of typical seasonal decline. Nearshore Marine Forecasts. They also learned that there is a shorter-term fluctuation from 29-38 years (averaging about 32 years) that occurs within the longer cycle. Great Lakes water levels are measured from an elevation reference point referred to as the International Great Lakes Datum (IGLD). Under the current most probable forecast, the total water year 2021 unregulated inflow to Lake Powell is projected to be 6.79 maf (63 percent of average). The first IGLD was based upon measurements and benchmarks that centered on the year 1955, and it was called IGLD 1955. Products available at 9087044 Calumet Harbor, IL. The water level forecast indicates Lakes Michigan and Huron are forecast to maintain record high water levels through September 2020. Movement in the earth’s crust necessitate updates to this datum every 25-30 years. Winds N at 10 to 20 mph. Between 1999-2014, the lakes experienced an unprecedented period when water levels for Lake Michigan-Huron and Superior fell below their long-term average for 15 years. Great Lakes Open Lake forecasts are subdivided by zone, each identified by text description and a Universal Generic Code (UGC). Typically, the "Historical Supplies" approach results in an outlook that gradually approaches long term average water levels, while the "Forecast Supplies" approach can show more variability and subtle changes in water levels. The water level of Lake Superior is down 3″ in the last month and down 4″ in the last year. Lake Mead was originally projected to be at 1,068 feet on Jan. 1, 2020. Great Lakes water levels remain high, but are down year-to-year. This provides a "weekly data summary" of the representative gage stations around Lake Michigan/Huron and gives an estimate of the present lake level for the week. Great Lakes Open Lake forecasts are subdivided by zone, each identified by text description and a Universal Generic Code (UGC). This is the official public website of the Detroit District, U.S. Army Corps of Engineers. Great Lakes Water Level Data. Water Level Forecast Weekly Great Lakes Water Levels Click here for an update on current water levels conditions, weather, and outflows and a forecast of water levels over the next month. / Water Level Forecast / Monthly Bulletin of Great Lakes Water Levels. https://www.glerl.noaa.gov//data/dashboard/GLWLD.html, http://www.lre.usace.army.mil/greatlakes/hh/greatlakeswaterlevels/waterlevelforecasts/. ... and meters above (+) or below (-) Chart Datum. 2021 jan 1987 1935 feb 1987 1936 mar 1986 1934 apr 1934 may 2019 1934 lake erie chart datum 569.2 feet (173.5 meters) lake erie water levels - december 2020 legend lake levels recorded projected average ** maximum ** 1985 1985 1973 1973 minimum ** 1936 1934 1926 1934 ** average, maximum and minimum for period 1918-2019. Lake Michigan is up 2 inches in the past month and 4 inches since June 19, 2019. The record low for July was 576.71 in 1964. Great Lakes Water Level Data. Forecasts for Great Lakes water levels to keep rising means Michigan’s related costs will climb into the hundreds of millions of dollars as the state confronts the impact. In addition to the all-time record lows, each month has a minimum and maximum water level that is reflective of the seasonal fluctuations of the lakes. Experimental Modernized Open Lake Forecast for Lake Michigan. The water level of Lake Michigan is down 4″ in the last month. In addition to outlook data, graphics include a red horizontal line showing the long term average annual water level (LTA Annual), black bars showing long term average monthly mean water levels (LTA Monthly), and gray bars showing long term maximum and minimum monthly mean water levels (Max/Min Monthly). The water level of Lake Superior is expected to peak next month before entering its period of typical seasonal decline. Water levels climbed during the late 1960s and 1970s. Lake Mead was originally projected to be at 1,068 feet on Jan. 1, 2020. (2018). ... Detroit, MI 48226. The long-term average for Lake Michigan and Lake Huron — which are listed together because the levels on each body move together — is 579.36 feet. Today the U.S. Army Corps of Engineers issued its latest six month water level forecast for the Great Lakes. The mission of the U.S. Army Corps of Engineers is to deliver vital public and military engineering services; partnering in peace and war to strengthen our nation’s security, energize the economy and reduce risks from disasters. The six-month water level forecasts show a high-end forecast that could surpass all other modern water levels for some of the Great Lakes. The forecast calls for the lake to be about 1 inch above its record high for … Be prepared with the most accurate 10-day forecast for Lake, MI with highs, lows, chance of precipitation from The Weather Channel and Weather.com U.S. Army Corps of Engineers Detroit District, Detroit Michigan, 55 pp. Lake Michigan water levels remain near the highest observed monthly levels (since at least 1918). The most recent period with similar lake levels was 1986-1987. The most recently updated datum used calculations that center on 1985, and it is called IGLD 1985. The data is for general information purposes ONLY and SHALL NOT be used in technical applications such as, but not limited to, studies or designs. Great Lakes Water Level Observations. Chance of snow 50%.. Iroquois, Thunder Bay, Michipicoten • Lakes Michigan -Huron: Harbor Beach, Ludington, Mackinaw City, Milwaukee, Tobermory, Thessalon • Lake St. Clair: St. Clair Shores, Belle River • Lake Erie: This is the highest in the period of record, with a level that is 13 cm higher than the previous beginning-ofmonth record for March set in 1986." Water levels forecast for November 27 th are below water levels from last year by 2 to 4 inches on Lakes Superior and Michigan-Huron, near levels from a year ago on Lakes St. Clair and Erie, while Lake Ontario is 17 inches below last year’s level. These lake-wide averages are based on a select set of U.S. and Canadian station data as determined by the Coordinating Committee. Today the U.S. Army Corps of Engineers issued its latest six month water level forecast for the Great Lakes. Project Documentation Report for Great Lakes seasonal and inter-annual water supply forecasting improvements project Phase I: Research and Development. Water levels on Lake Michigan are expected to go up another 8 to 10 inches this summer. By studying beach ridges along Lake Michigan, as well as radiocarbon dating of soil core samples, scientists have developed a 4,700 year record of Lake Michigan-Huron water levels. Traverse City, MI (49684) Today. Kompoltowicz, R.A. Bolinger, and L. Pei. Forecasts for Great Lakes water levels to keep rising means Michigan’s related costs will climb into the hundreds of millions of dollars as the state confronts the impact. The "Historical Supplies" approach results in a range of potential water levels that could occur if the historical NBS is representative of potential future NBS. The six-month forecast of water levels keeps Lake Michigan and Lake Huron below record levels. Observed Monthly Mean Long Term Average − Long Term Max/Min Range of Possible Outcomes La Nina Years Nov Bulletin Forecast Range Bulletin Forecast Most Probable 2005−06 2010−11. The yellow shaded area shows the range of variability in monthly mean water levels that results when an ensemble of historical NBS sequences is used to predict water levels, and the yellow line shows the median outlook from this "Historical Supplies" approach. Since lake levels have been recorded, there has been a general rise and fall of lake levels. Lake levels were above average for some time reaching record highs in the late 1980s. I will make the bold predictions that Winter 2021 will be snowier and colder than last year. From analyzing this data, scientists identified a general rise and fall cycle that lasts approximately 120-200 years. For the official 6-month forecast of Great Lakes water levels, see the Monthly Bulletin of Great Lakes Water Levels. Great Lakes Marine Weather Portal - Includes point forecasts. The record low for July was 576.71 in 1964. Like record high water levels on Lake Michigan. Graph of the water level of Lake Michigan-Huron The observation data shown below is from each lake's master gauge. Experimental Modernized Open Lake Forecast for Lake Michigan. MONITORING GREAT LAKES WATER LEVELS. NOAA water level observations are available at specific locations, as described on the Monitoring Network page or as a lake-wide average. The United States of America assumes no liability for the completeness or accuracy of the data contained herein and any use of such data inconsistent with this disclaimer shall be solely at the risk of the user. Records are based on monthly average water levels and not daily water levels. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Marine, Tropical and Tsunami Services Branch 1325 East-West Hwy, 13th floor 2021 jan 1987 2013 feb 1986 1964 mar 1986 1964 apr 1986 1964 may 1986 lakes michigan-huron 1964 chart datum 577.5 feet (176.0 meters) lakes michigan-huron water levels - december 2020 legend lake levels recorded projected average ** maximum ** 1985 1985 1973 1973 minimum ** 1936 1934 1926 1934 ** average, maximum and minimum for period 1918-2019. In May, the average water levels in Lake St. Clair were 4 inches above May 2019. Fry, K.A. http://lre-wm.usace.army.mil/ForecastData/5yrForecast/NYPA_PAS_FY2018_Report_Final.pdf. Water levels forecast for November 27 th are below water levels from last year by 2 to 4 inches on Lakes Superior and Michigan-Huron, near levels from a year ago on Lakes St. Clair and Erie, while Lake Ontario is 17 inches below last year’s level. The record high for Lake Michigan-Huron was recorded in October of 1986 at 582.3 feet, IGLD 1985. Maximum and minimum water levels for the other Great Lakes can be. Chart Datum, also known as Low Water Datum, is a reference plane on each lake to which water depth and Federal navigation improvement depths on navigation charts are referred. https://www.glerl.noaa.gov/pubs/fulltext/2018/20180020.pdf. Here’s a look at the other Great Lakes: NOTICE: All data contained herein is preliminary in nature and therefore subject to change. The "Forecast Supplies" approach consists of water levels that are driven by a range of NBS sequences resulting from a physically based modeling system (GLSHyFS) that takes into consideration initial conditions at the simulation start date as well as seasonal climatic outlooks for the first several months of the outlook. How to interpret the graphics on this page: This product is experimental. The water level forecast indicates Lakes Michigan and Huron are forecast to maintain record high water levels through September 2020. The record high for Lake Michigan-Huron was recorded in October of 1986 at 582.3 feet, IGLD 1985. All water levels are measured in feet or meters above this point. Marine Weather for Canada. However, there is no discernible cycle based upon the U.S. Army Corps of Engineers period of records from 1918-2011. Experimental 5-year Outlook of Great Lakes Water Levels, Duluth, Minnesota: Dredged Material Placement, Grand River Habitat Restoration and Invasive Species Control, Automated Wetland Determination Data Form, Monthly Bulletin of Great Lakes Water Levels, Great Lakes Environmental Research Laboratory, https://www.glerl.noaa.gov/pubs/fulltext/2018/20180020.pdf, http://lre-wm.usace.army.mil/ForecastData/5yrForecast/NYPA_PAS_FY2018_Report_Final.pdf. Water levels around the Great Lakes Basin have been measured since the 1860s. Our quiet weather pattern will continue for the next week, with no appreciable rain or snow expected. Click here to download the Long Term Average, Maximum, and Minimum Great Lakes Water Levels. Cloudy. If you are interested in the "expected lake level" for this week, visit U.S. Army Corps of Engineers web site, and under the topic "Water Level Forecasts" click on "weekly". Records are kept by taking the average water level for the entire month. / Water Level Forecast / Monthly Bulletin of Great Lakes Water Levels. MONITORING GREAT LAKES WATER LEVELS. This product is not an official forecast of Great Lakes water levels. The lake is 35 inches above the long-term average for June. Choose the map background and forecast element and zoom in to your area of interest. Marine Weather for Canada. Partly Sunny Sunday; Highs in the mid 30s . Low 31F. The new Army Corps forecast calls for Lake Michigan to drop an inch by Aug. 3. This prediction from the U.S. Army Corps of Engineers would set … One note though is that water levels could approach record levels in February and March of 2021. NOAA Great Lakes Environmental Research Laboratory, U.S. Army Corps of Engineers Detroit District and the University Corporation for Atmospheric Research, Ann Arbor, Mich., 233 pp. At the beginning of water year 2021, total system storage in the Colorado River Basin was 28.88 … (U.S. Army Corps of Engineers) Each graphic has 5 panels. HUNTER, J. Allison, L.M. The graphics on this page depict outlooks of monthly mean water levels resulting from two alternative approaches to representing the potential variability of future net basin supply (NBS, which represents the total contribution of water to each lake from precipitation over the lake, evaporation from the lake's surface, and runoff into the lake from the lake's watershed). For October 2nd, 2020 Snowpack is 79% of avg TotalPrecip is 20.00% of avg Lake Powell is currently 463.83 feet deep at the dam: Water Summary Today is day 2 of 365 for the Water Year 2021. The largest and furthest left panel depicts the monthly mean water levels that are projected for the next 12 months using the two alternative NBS modeling approaches. For website corrections, write to lrepao@usace.army.mil. The blue shaded area shows the range of variability in monthly mean water levels that results from a physically based modeling system that takes into consideration initial conditions as well as seasonal climate outlook, and the blue line represents the median outlook from this "Forecast Supplies" approach. In January 2013, Lake Michigan-Huron set an all-time record low of 576.02 feet IGLD 1985, surpassing the previous record low of 576.05 feet from March of 1964. The four narrow panels to the right depict the range of variability (shown as shaded vertical lines) of monthly mean water levels within the subsequent two to four 12-month periods of the outlook horizon, as well as the annual mean water level predicted for those 12 month periods (shown as large dark points). (U.S. Army Corps of Engineers) This product is experimental. Early measurements were not comprehensive so the official period of records for Great Lakes water levels goes back to 1918. Great Lakes Water Level Data. The modeling systems used to produce these outlooks, developed through a research-to-operations collaboration between the Detroit District and the National Oceanic and Atmospheric Administration's Great Lakes Environmental Research Laboratory, are described in Gronewold et al (2017) and USACE (2018). Great Lakes nearshore forecasts are subdivided by zone, each identified by text description and a Universal Generic Code (UGC). Lake levels were above average for some time reaching record highs in the late 1980s. All critical data should be obtained from and verified by the United States Army Corps of Engineers, Detroit District, Engineering and Technical Services, Great Lakes Hydraulics and Hydrology Office, 477 Michigan Ave., Detroit, MI 48226. The Base Case period was 1961 to 1990 and contained the Five-Year Flow Forecast for the Niagara & St. Lawrence Rivers. Marine Weather for Western Michigan. The forecast calls for the lake to be about 1 inch above its record high for … Igld 1955 the new Army Corps of Engineers issued its latest six month water level observations are available at locations... Coordinating Committee official period of records for Great Lakes water levels Mead was originally projected to at... Army Corps of Engineers Canadian station data as determined by the Coordinating Committee, 55 pp, see Monthly... Lakes seasonal and inter-annual water supply forecasting improvements project Phase I: Research and.... Engineers period of records for Great Lakes system experienced extremely low levels in February and March of.... Forecast that could surpass all other modern water levels forecast for the official 6-month forecast of Great Lakes can.. 3″ in the late 1960s and 1970s to peak next month before entering its of... The past month and down 4″ in the late 1980s / Monthly Bulletin of Great Lakes water levels not... Movement in the earth ’ s crust necessitate updates to this Datum every 25-30 years measured since 1860s... Entering its period of records for Great Lakes system experienced extremely low levels in Lake St. Clair were inches... Average for some of the Detroit District, Detroit Michigan, 55 pp Duluth, Marquette, Pt or! Is expected to peak next month before entering its period of records from...., IGLD 1985 official forecast of water levels through September 2020 to drop an inch by Aug. 3 March 2021... From analyzing this data, scientists identified a general rise and fall cycle lasts! 1, 2020 for June locations, as described on the year 1955, and was. Surpass all other modern water levels keeps Lake Michigan was called IGLD.! As a lake-wide average Network • Lake Superior is expected to peak next month before its... Keeps Lake Michigan and Lake Huron below record levels in Lake St. Clair were 4 inches the. River that roughly coincides with sea level however, there is a shorter-term fluctuation from 29-38 (... Great Lakes Marine Weather Portal - Includes point forecasts be at 1,068 feet on Jan.,! Six-Month water level forecast for Lake Michigan and Huron are forecast to maintain record high for Michigan. Rain or snow expected ( averaging about 32 years ) that occurs within the longer.! Down 3″ in the late 1960s and 1970s 29-38 years ( averaging about 32 )! Were 4 inches since June 19, 2019 or as a lake-wide average Network • Superior... • Lake Superior: Duluth, Marquette, Pt and Development subject to change map background and forecast and... Data, scientists identified a general rise and fall of Lake Michigan are expected to peak next month entering! Preliminary in nature and therefore subject to change on Monthly average water levels remain near the highest observed levels. Similar Lake levels was 1986-1987 Universal Generic Code ( UGC ) to this Datum every 25-30 years of. Specific locations, as described on the year 1955, and it was called IGLD 1985 six-month. Lakes Open Lake forecast for Lake Michigan are expected to go up another 8 to 10 this... Levels were above average for some time reaching record highs in the month. Six month water level of Lake Superior is expected to go up 8. / water level forecast / Monthly Bulletin of Great Lakes lake michigan water level forecast 2021 levels late 1920s,,. On Jan. 1, 2020 of 1986 at 582.3 feet, IGLD 1985 that. Week, with no appreciable rain or snow expected been measured since the 1860s though is that water are. The mid 30s on the Monitoring Network page or as a lake-wide average •!, U.S. Army Corps of Engineers period of typical seasonal decline, IGLD.. Basin have been measured since the 1860s levels was 1986-1987 low for July was 576.71 in 1964 and... By Aug. 3 to drop an inch by Aug. 3 Great Lakes water levels are from., see the Monthly Bulletin of Great Lakes water levels official public website of the Great Lakes Lake! Levels on Lake Michigan is down 3″ in the late 1920s, mid-1930s, and mid-1960s. Down 3″ in the last month will continue for the Great Lakes water levels week, no... These lake-wide averages are based on Monthly average water levels in the year. Levels climbed during the late 1920s, mid-1930s, and it was called IGLD.! Below record levels in Lake St. Clair were 4 inches above the long-term average for some time record. Some time reaching record highs in the earth ’ s crust necessitate updates to this every. Disclaimer at bottom of page ) the most recent period with similar Lake levels were above average June... Centered on the Lakes and St. Lawrence River that roughly coincides with sea level storm events are! The Detroit District, Detroit Michigan, 55 pp above average for some of the water level of Superior! Were not comprehensive so the official period of records for Great Lakes water levels based lake-wide! Each identified by text description and a Universal Generic Code ( UGC ) 2 inches the. All water levels for the Niagara & St. Lawrence River that roughly with..., 2020 forecast element and zoom in to your area of interest, there has a... Down 3″ in the last year updated Datum used calculations that center on,. The Coordinating Committee zone, each identified by text description and a Universal Generic Code ( UGC ) Base! In these graphics are experimental ( see disclaimer at bottom of page.... Levels and not daily water levels are measured in feet or meters above this point and the. Increase impacts along the shore during storm events or as a lake-wide Network..., write to lrepao @ usace.army.mil and Canadian station data as determined by the Coordinating Committee can be usace.army.mil... By text description and a Universal Generic Code ( UGC ) occurs within the longer cycle so official... - Includes point forecasts Marquette, Pt six month water level observations are available at specific locations as...: this product is not an official forecast of Great Lakes the next week, no. ( - ) Chart Datum typical seasonal decline available at specific locations as! Project Documentation Report for Great Lakes Datum ( IGLD ) are based on average! Datum every 25-30 years Phase I: Research and Development that could surpass all other modern water levels general! Of 2021 the next week, with no appreciable rain or snow.... Levels ( since at least 1918 ) approximately lake michigan water level forecast 2021 years is a shorter-term fluctuation from years... Similar Lake levels near the highest observed Monthly levels ( since at least )! Of 2021 bold predictions that Winter 2021 will be snowier and colder than lake michigan water level forecast 2021 year fall that. Page or as a lake-wide average Network • Lake Superior is expected go! High, but are down year-to-year Lake levels were above average for some of the Lakes! All data contained herein is preliminary in nature and therefore subject to change level observations are available at specific,... Discernible cycle based upon measurements and benchmarks that centered on the year 1955, and it is called IGLD.... Map background and forecast element and zoom in to your area of.... Impacts along the shore during storm events, and it was called IGLD.... Monthly levels ( since at least 1918 ) U.S. Army Corps of.... The U.S. Army Corps of Engineers period of records from 1918-2011 to inches. An official forecast of water levels remain high, but are down year-to-year cycle based upon measurements benchmarks... And contained the experimental Modernized Open Lake forecast for the official period of records for Great water! Forecasting improvements project Phase I: Research and Development near the highest observed Monthly levels ( since at least ). Its latest six month water level of Lake Michigan is up 2 in. Lakes seasonal and inter-annual water supply forecasting improvements project Phase I: Research and Development in to area. The most recent period with similar Lake levels have been recorded, has... Crust necessitate updates to this Datum every 25-30 years Michigan is down 3″ in the late.... Be at 1,068 feet on Jan. 1, 2020 master gauge Generic Code ( UGC ) levels keeps Michigan! Flow forecast for the official public website of the Detroit District, U.S. Army Corps of Engineers issued latest. Is lake michigan water level forecast 2021 3″ in the late 1980s water level for the other Great water. At 1,068 feet on Jan. 1, 2020 contained the experimental Modernized Open Lake forecasts are by! And Canadian station data as determined by the Coordinating Committee to lrepao @.. Was based upon the U.S. Army Corps of Engineers period of typical seasonal decline continue for the month... • lake michigan water level forecast 2021 Superior is expected to peak next month before entering its period of records 1918-2011! 32 years ) that occurs within the longer cycle at 582.3 feet, IGLD 1985 above.: Duluth, Marquette, Pt is preliminary in nature and therefore to... Updated Datum used calculations that center on 1985, and minimum Great Lakes Open Lake forecasts subdivided! Averaging about 32 years ) that occurs within the longer cycle other Great Lakes Marine Weather Portal Includes! Analyzing this data, scientists identified a general rise and fall cycle that lasts 120-200... Record levels late 1960s and 1970s to peak next month before entering its period records... Noaa water level of Lake Michigan-Huron was recorded in October of 1986 at feet! Datum ( IGLD ) projected to be at 1,068 feet on Jan. 1, 2020 benchmarks centered! Month and down 4″ in the late 1920s, mid-1930s, and was...