HDSC -- Hydrometeorological Design Studies Center

About HDSC

National Weather Service
Office of Water Prediction
Hydrometeorological Design Studies Center

The Hydrometeorological Design Studies Center (HDSC) is responsible for the development, production, and publication of precipitation frequency (PF) estimates for the United States and affiliated territories. These estimates are updated periodically to account for new data and improved methodologies, depending on available funding.

Since the early 2000s, HDSC has updated PF estimates for various regions of the country and published them as Volumes in NOAA Atlas 14 series (https://hdsc.nws.noaa.gov/pfds/). In 2022, NOAA received federal funding under the Bipartisan Infrastructure Law to revise and update NOAA PF estimates. Once complete, updated national estimates will be published in two volumes of NOAA Atlas 15.

Please visit the NOAA Atlas 14 website site for detailed information on NOAA Atlas 14: https://www.weather.gov/owp/hdsc. For all inquiries regarding NOAA Atlas 14, please send an email to HDSC.questions@noaa.gov.

Please visit the NOAA Atlas 15 Pilot website for detailed information on NOAA Atlas 15, currently in development: https://water.noaa.gov/about/atlas15. For all inquiries regarding NOAA Atlas 15, please send an email to atlas15.info@noaa.gov.

This is an email list for announcements regarding HDSC activities only. Generally, there are no more than 1 or 2 messages per year.
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