ADEQ Navigable Waters Protection Rule Screening Toolkit and Flow Regimes for Arizona Waterways

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ADEQ Water Quality Division Screening Toolkit

Now Available Online

ADEQ developed a Screening Toolkit and flow regime maps to assess which waters may be jurisdictional under the Clean Water Act with the implementation of the Navigable Water Protection Rule and as discussed in stakeholder meetings. Information regarding this toolkit and flow regimes for Arizona waterways is now available online at:

These webpages will be updated as new information becomes available and the flow regimes for Arizona waterways will also be updated monthly. The Screening Toolkit and flow regime assignments are limited to known sources of information and data to ADEQ. Other available data, information and analysis may be necessary to make final jurisdictional determinations related to WOTUS. 

Subscribe for monthly flow regime email updates >

To submit additional or new sources of data to ADEQ or provide input regarding the Screening toolkit and flow regimes, please email

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