Regional Streamflow Duration Assessment Methods

  • What is the flow duration of my stream?

    Use rapid, field-based Regional SDAMs to classify streamflow duration at the reach scale. Learn more about it via the links below. Use the Web Application for Regional SDAMs.

  • Learn about SDAMs

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    What is streamflow duration? What are SDAMs? What can they be used for?

    Learn about SDAMs

  • Web Application for Regional SDAMs

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    Access the Web Application for Regional SDAMs to apply the Regional SDAMs for the Pacific Northwest, Arid West, Western Mountains, Great Plains, Northeast and Southeast Regions.

    Web app for Regional SDAMs

  • Materials that support application of the Regional SDAMs

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    Access field forms, user manuals, suggested equipment list, training materials, additional references, data, and more.

    Supporting Materials

  • Development of the Regional SDAMs

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    Why Regional SDAMs were developed, Regional SDAM coverage and map, steps taken to develop them, and more.

    Development of the Regional SDAMs
Contact Us About the Streamflow Duration Assessment to ask a question, provide feedback, or report a problem.
Last updated on June 12, 2025