COMMENTARY: Georgian Bay water drop: Where did the water go? Peterborough This Week (4/2) In the middle Great Lakes, water levels have been dropping steadily over the course of only a few generations and they show no sign of stopping, but if sills are successfully installed, things could get better.
COMMENTARY: Eastman park permit could set precedent Rochester City Newspaper (4/1) A business park in Rochester, NY with a self-contained, specialized utilities system that depends on large quantities of water from Lake Ontario is applying to withdraw 54 million gallons of lake water per day.
Temperatures were generally near average throughout the Great Lakes basin last weekend and this week through Wednesday. The overall basin experienced lower temperatures in March than it typically does, and all of the Great Lakes received less precipitation than usual for March. Precipitation was minimal throughout the Great Lakes basin this past weekend and this continued through Wednesday. Temperatures are projected to be generally near average this weekend, and significant precipitation is expected throughout the majority of the basin on Friday and Monday.
Water Level Conditions:
Lakes Superior and Michigan-Huron are 15 and 13 inches, respectively above their levels of a year ago. Lakes St. Clair and Erie are 10 and 6 inches, respectively, above what they were at this time last year, while Lake Ontario is near its level of a year ago. Lakes Superior and Michigan-Huron are predicted to climb 3 and 5 inches, respectively, over the next 30 days. Lakes St. Clair and Erie are both projected to rise 4 and 5 inches, respectively in the next month, while Lake Ontario will rise 8 inches. Ice build-up in the connecting channels can cause significant water level fluctuations, especially in Lake St. Clair.
See the Great Lakes Water Levels web page for more water level information.
Forecasted outflows / channel conditions:
Lake Superiorís outflow through the St. Maryís River is predicted to be above average for the month of April. Lake Michigan-Huronís outflow into the St. Clair River is predicted to be below average, while Lake St. Clairís outflow into the Detroit River is expected to be near average. In addition, the outflow of Lake Erie into the Niagara River and Lake Ontarioís outflow into the St. Lawrence River are projected to be near average in April.
Official records are based on monthly average water levels and not daily water levels. Lake Michigan-Huron is below chart datum. Users of the Great Lakes, connecting channels and St. Lawrence River should keep informed of current conditions before undertaking any activities that could be affected by changing water levels. Mariners should utilize navigation charts and refer to current water level readings. Mariners should utilize navigation charts and refer to current water level readings.
Ice information can be found at the National Ice Center's webpage.