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Estimated quantiles of decadal flow-duration curves using selected probability distributions fit to no-flow fractions and L-moments predicted for streamgages in the southeastern United States, 1950–2010

Organization: Department of the Interior
Updated: 20230216 | Harvested: July 17, 2025 at 07:07 PM

Using previously published (Robinson and others, 2019) no-flow fractions and L-moments of nonzero streamflow from decadal streamflow flow-duration analysis (daily mean streamflow), probability...

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Estimated quantiles of decadal flow-duration curves using selected probability distributions fit to no-flow fractions and L-moments predicted for pour points of level-12 hydrologic unit codes in the southeastern United States, 1950–2010

Organization: Department of the Interior
Updated: 20230216 | Harvested: July 17, 2025 at 07:00 PM

Using previously published (Robinson and others, 2019) no-flow fractions and L-moments of nonzero streamflow from decadal streamflow flow-duration analysis (daily mean streamflow), probability...

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Data Files for the Development of Regional Regression Equations for Flow-Duration Statistics and N-day Low-Flow Frequencies for Ungaged Stream Locations in Puerto Rico Using Data Through Water Year 2018

Organization: Department of the Interior
Updated: 20210624 | Harvested: July 16, 2025 at 01:56 PM

Flow-duration statistics at the 99th, 98th, 95th, 90th, 80th, 70th, 60th, and 50th percent exceedance probabilities and annual n-day low-flow statistics for the 1-, 7-, 14-, and 30-day mean low...

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Updated Flow-Duration Exceedance Probabilities for Select Reference Streamgages in the Delaware River Basin and Associated Basin Characteristic Geospatial Data

Organization: Department of the Interior
Updated: 20241030 | Harvested: July 15, 2025 at 09:30 PM

The U.S. Geological Survey (USGS) operates a dense network of streamgages within the Delaware River Basin (DRB) that provides near real-time and daily mean streamflow values, many of which have a...

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Puerto Rico Flow-Duration Regression Files

Organization: Department of the Interior
Updated: 20210624 | Harvested: July 16, 2025 at 01:36 PM

An ordinary least squares (OLS) technique was used with at-site flow-duration exceedance probabilities, from SWToolbox (Kiang and others, 2018), and 14 basin characteristics (basin perimeter,...

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Estimated quantiles for the pour points of 9,203 level-12 hydrologic unit codes in the southeastern United States, 1950--2009

Organization: Department of the Interior
Updated: 20200821 | Harvested: July 18, 2025 at 01:06 AM

This page contains 15 estimated quantiles for 9,203 level-12 Hydrologic Unit Code in the Southeastern United States for the decades 1950-1959, 1960-1969, 1970-1979, 1980-1989, 1990-1999, and...

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