ADEQ Updates & Meeting Resources for Federal Navigable Waters Protection Rule

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Thank you to all those who participated in the June 15, 2020, ADEQ Web Conference for the Federal Navigable Waters Protection Rule.

A total of 378 interested parties participated and asked more than 80 questions; thank you for making the event a success.

As ADEQ learns more from the Environmental Protection Agency and the Army Corps of Engineers about how to implement the Navigable Waters Protection Rule, we will share that information with you via our Waters of the US web page and via email.

ADEQ will also keep you informed of our progress working on important aspects of the new rule such as Traditional Navigable Waters Determination and Typical Year Analysis. 

Barring any stay of the new rule, it will go into effect on June 22, 2020. We will update you via email if any stay will impact Arizona.   

As promised, we have also posted the presentation from the June 15, 2020, meeting, updated with a map to Arizona’s Traditional Navigable Waters and a link to the Army Corps Traditional Navigable Water determinations | Visit Meeting Resources Page >

Once the Arizona flow regime maps have been finalized, ADEQ will also share those maps and notify stakeholders.

In response to a question about the Spill Prevention, Control, and Countermeasure program, we have included this link to EPA’s web page for that program.

Again, thank you for your continued contribution to our success. 

Justin Bern
Surface Water Quality Protection Value Stream Manager  

About ADEQ

Under the Environmental Quality Act of 1986, the Arizona State Legislature established the Arizona Department of Environmental Quality in 1987 as the state agency for protecting and enhancing public health and the environment of Arizona. For more information, visit

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