Great Lakes 101

Over the past two years of my soft fascination with the Great Lakes, there are many facts and statistics I have either learned or revisited. But one fact stands out: The Great Lakes and their connecting waterways make up the largest surface freshwater system on earth.

Why this matters: The Great Lakes are actually one system, and it is this interconnectedness that also makes them ecologically fragile.

The Great Lakes are the result of glaciers that built up over North America starting about 500,000 years ago. About 14,000 years ago, temperatures began to warm, and the glaciers shrunk and retreated. As they did this, they carved new landforms, including massive depressions. Some of these depressions filled with the melting glacial ice, creating the early Great Lakes. 

The lakes and connected rivers have changed shape and form over the past 14,000 years, but today, water flows through the system more or less eastward. It starts in the deep, cold, expansive waters of Lake Superior (the largest lake by surface area and deepest with an average depth of 489 feet). It flows into the St. Mary’s River and then into Lakes Huron and Michigan. I say “Lakes” because Huron and Michigan are actually one body of water, appearing like two lungs, connected at the Straits of Mackinac. Lake Huron waters flow into the St. Clair and Detroit Rivers before moving into the western basin of Lake Erie. On the eastern basin of Lake Erie (the shallowest of the lakes with average depth of 62 feet; much more on the impact of this shallowness in future posts), the water flows into the Niagara River, over Niagara Falls, and into Lake Ontario (the smallest lake by surface area). From there, water moves into the St. Lawrence River and eventually flows into the Atlantic Ocean.  

This interconnectedness is what enabled a multisectoral economy to emerge on the Great Lakes. Manufacturing, agriculture, mining, energy services and tourism all thrive with ships moving between the US, Canada and further global reaches. A notable example: the history of the automobile industry in the US is interdependent with the history of the Great Lakes. But the interconnectedness is also what makes the lakes vulnerable to environmental threats, notably invasive species, which have had dramatic impacts I will discuss more in future posts. Chemicals, plastics, toxins and warming temperatures also upset the balance of the lakes as they flow through the system.These threats create an interlocking and cascading range of issues for the plants and animals in the lakes, and those that live on lands surrounding the lakes – including humans. Approximately 40 million North Americans get their drinking and household water from the Great Lakes. Affirming this tremendous natural resource while simultaneously recognizing its fragility is critical to protecting the lakes for the very near and distant future.

Great Lakes, No Clouds
Great Lakes, No Clouds by NASA Goddard Photo and Video is licensed under CC-BY 2.0
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I’m Ellie and I’m an East Coast girl living a Great Lakes life.

I grew up in the Washington, D.C. area, hundreds of miles from the Great Lakes. I spent my early adulthood in Boston and then New York City for a decade. In that decade I met and married my husband, who grew up in Cleveland. In 2014, after our first daughter was born, we decided to move to Cleveland to be closer to family and for a better cost of living. We live in the Cleveland area with our now two daughters.

Cleveland from Upper Edgewater Park, June 2022

My favorite class throughout my K-12 years was 7th grade geography. I loved maps, places and people. I’ve always had a certain fascination with the Great Lakes. On a map they appear as huge patches of blue nestled in the middle of North America. If you look closely at them on the map and take a moment to compare their size to that of surrounding states, you may start to recognize their actual expanse – which is enormous. They are really inland freshwater seas.

Why this matters: We are living through accelerating climate and environmental change. Access to freshwater is rapidly becoming a very real issue in some parts of the United States. It is worth pausing to consider what it means that the Great Lakes hold 84% of all surface freshwater in North America.  

I invite anyone, from America’s east and west coasts, sunbelt, western mountains, or here in this region to take a closer look at our Great Lakes. As I have explored and learned more about them over recent years, I have come to see them as nothing short of awe-inspiring.

There are gorgeous coastlines, dramatic stories of ecologic disaster, recovery, and threat, and rich historical storylines. As a place of natural beauty, their value is immeasurable. The shores of Lake Erie are the first place I go to seek peace and solace in this increasingly complex world.

The goal of my blog is to inspire love and respect for the Great Lakes. They are, simply, one of the most tremendous natural resources on earth. They are also specific places, shaped by natural forces and human life. My blog posts will be a mix of content intended to share on both of these topics. The objective of some posts will be to share information about issues relevant to the Great Lakes. Other posts will share and celebrate my Great Lakes experiences.

I plan to keep most posts short; I believe it’s best to keep content concise and meaningful. I will not provide all the information on a topic, but hopefully I will nurture your curiosity. You can bookmark this page, or you can subscribe to receive a newsletter from me every other Wednesday in your email linking to new posts.

Let me edit the opening line of this post to close it out: I’m an East Coast girl loving a Great Lakes life. I’m so glad you are here and joining me on this journey.

Pictured Rocks National Lakeshore, Lake Superior, Michigan, July 2022
Ludington State Park (MI), Lake Michigan, July 2022
Lake Erie, Geneva, OH, January 2021
Home, Birthday Cupcakes from Daughters, October 2022
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