Great Lakes
DataStream

An open access hub for sharing water data

Our mission is to promote knowledge sharing and collaboration so our waters remain healthy for generations to come

Explore Data

Explore Monitoring Results

One-click visualizations make monitoring results easier to understand.

Explore Data

Animated demo of DataStream

Stories and Announcements

Three organizations that are protecting Canada’s wetlands

Three organizations that are protecting Canada’s wetlands

It’s World Wetlands Day, a chance to come together in appreciation and action for wetlands around the globe. Wetlands are vital to our collective well-being, providing clean water, clean air, and a home for 40% of the world’s species. Wetlands can store 50 times more carbon than rainforests, making them essential ecosystems for fighting climate change.

Keep ReadingThree organizations that are protecting Canada’s wetlands  
Charlotte in a kayak --- Charlotte en kayak

Meet Our Team: Charlotte Hagelstam-Renshaw

As part of our ongoing staff feature series, we are thrilled to profile one of DataStream’s Data Specialists, Charlotte Hagelstam-Renshaw!  

Keep ReadingMeet Our Team: Charlotte Hagelstam-Renshaw  
Island in the middle of a river next to a highway

2023: DataStream's Year in Review

See what we've been up to this year in our 2023 highlights video.  

Keep Reading2023: DataStream's Year in Review  

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A boat on the water surrounded by mountains

Better Data Means Better Decisions

Communities can drive the data-to-policy cycle. Great Lakes DataStream is designed to support this.

About DataStream

Monitoring Groups

Monitoring Groups

Communities are connected to their waters and best-placed to see changes as they happen.

Open Data

Open Data

DataStream provides a place to store, share, and compare water monitoring data across watersheds.

Interpretation & Knowledge

Interpretation & Knowledge

Open data advances scientific knowledge, supports collaboration, and fuels innovation.

Policy & Action

Policy & Action

Knowledge can be translated into action to protect the health of watersheds on which we all depend.

Great Lakes DataStream at a Glance

DataStream brings water monitoring information together so it’s open, accessible and usable.

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Monitoring Groups

8,809,193

Unique Measurements

23,754

Monitoring Sites