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

DataStream Evaluation Report

The results are in! DataStream's 2023 external evaluation

We asked for your feedback, and you delivered! DataStream is pleased to share the results of our 2023 external evaluation.

Keep ReadingThe results are in! DataStream's 2023 external evaluation   
panel discussion

Community science on the agenda in the Great Lakes

Since DataStream began in 2016, we have focused on amplifying the important work of community-based monitoring groups. We’re excited that community science has been a central theme at the many gatherings we’ve attended over the past few months throughout the Great Lakes region.

Keep ReadingCommunity science on the agenda in the Great Lakes  
Madawaska River.

Paddling and protecting the Madawaska

For the past four years, Madawaska Kanu Centre’s office team have been tracking the river’s water quality. Once a month, unless the conditions are too icy, they measure parameters like pH levels, dissolved oxygen and transparency.

Keep ReadingPaddling and protecting the Madawaska  

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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.

74

Monitoring Groups

9.1M

Unique Measurements

27K

Monitoring Sites