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Watershed Science

We bring a range of approaches to the process understanding how our local watersheds work.


All watersheds are complex systems made up of many features, that are constantly responding to a range of dynamic inputs–weather, human activities, and now climate. Each watershed is also unique, and Green Valleys has been working to understand our local watersheds since our organization’s inception 60 years ago.

Our Watershed Science Program is collecting water quality data and developing the necessary framework to interpret that data. We are also working with a variety of other types of information to help us understand the water quality data we are collecting. 

Water Quality Data

Green Valleys’ water quality data that was collected from 2014 through 2023 has been organized into an online application. We have developed a unique indexing process to organize this data, as well as other data available through the Water Quality Portal

Learn more about GVWA’s Water Quality Data Collection

Watershed Flow Model

GVWA builds GIS models that simulate how water moves through our watersheds.

Learn more about GVWA’s Watershed Flow Model

Impervious Cover

With development comes increasing impervious cover and declining watershed health. How can we track this?

Find Your Watershed

GVWA builds GIS models that simulate how water moves through our watersheds.

Learn more about GVWA’s Watershed Flow Model

Volunteer Monitoring Programs

Our Streamlines Newsletter is a great source of information about the current issues and where GVWA is working to address them.

Watershed Flow Model

GVWA builds GIS models that simulate how water moves through our watersheds.

Learn more about GVWA’s Watershed Flow Model

Watershed Topics & Issues

Our Streamlines Newsletter is a great source of information about the current issues and where GVWA is working to address them.

Watershed Topics & Issues

Our Streamlines Newsletter is a great source of information about the current issues and where GVWA is working to address them.

Watershed Topics & Issues

Our Streamlines Newsletter is a great source of information about the current issues and where GVWA is working to address them.

Watershed Science

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Our Watershed Science Program is collecting water quality data and developing the necessary framework to interpret that data. We are also working with a variety of other types of information to help us understand the water quality data we are collecting.