Flow-Duration Curves - USGS

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Flow-Duration CurvesManual of Hydrology: Part 2. Low-Flow TechniquesGEOLOGICAL SURVEY WATER-SUPPLY PAPER 1542-AFlow- duration CurvesBy JAMES K. SEARCYManual of Hydrology: Part 2. Low-Flow TechniquesGEOLOGICAL SURVEY WATER-SUPPLY PAPER 1542-AMethods and practices of the Geological SurveyUNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959UNITED STATES DEPARTMENT OF THE INTERIOR WALTER J. HICKEL, SecretaryGEOLOGICAL SURVEY William T. Pecora, DirectorFirst printing 1959 Second printing 1963 Third printing 1969CONTENTSPageAbstract________________ _______________________________________ 1Preparation of 3Period used____________________________________ _______________ 3Time units___________________________________ _______________ 4Class intervals--__---_--____----_-_________-_ -________________ 6Compiling Flow-Duration data.

11. Geologic map of area in southern Mississippi having approx­ imately uniform climate and altitude._____ 25 12. Flow-duration curves for selected Mississippi streams, 1939-48. 27 13. Flow-duration curve applied to hydropower study _____ 28 TABLES Page TABLE 1.

  Flows, Duration, Curves, Geologic, Flow duration curve, Geologic map