Transcription of Flow-Duration Curves - USGS
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Flow-Duration Curves - USGS
Flow-Duration CurvesManual of Hydrology: Part 2. Low-Flow TechniquesGEOLOGICAL SURVEY WATER-SUPPLY PAPER 1542-AFlow-Duration CurvesBy JAMES K. SEARCYM anual of Hydrology: Part 2. Low-Flow TechniquesGEOLOGICAL SURVEY WATER-SUPPLY PAPER 1542-AMethods and practices of the Geological SurveyUNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR WALTER J. HICKEL, SecretaryGEOLOGICAL SURVEY William T. Pecora, DirectorFirst printing 1959 Second printing 1963 Third printing 1969 CONTENTSPageAbstract_____ 1 Preparation of 3 Period used_____ 3 Time units_____ 4 Class intervals--__---_--____----_-_____-_-___ __ 6 Compiling Flow-Duration data. _____ 7 Use of form 9-217c_____ 7 Use of form 9-217d_____ 9 Presentation of 9 Tabular presentation_____ 9 Graphical presentation_____ 10 Type of paper_____ 11 Discharge 11 Long-term Flow-Duration Curves from short-term 12 Selection of the index station_____-_____-_____-_____ 14 Establishing the relation___-_---__-___--_____-_____--___ -__ 14 Adjusting the short-term record_____ 16 Estimation of the Flow-Duration 17 Hydrologic significance of the Flow-Duration curve _____ 21 Shape of the curve_____ 22 Median _____ 22 Uses of the flow-dura
power, water-supply, and pollution studies. This report shows that differences in geology affect the low-flow ends of flow- ... Flow-duration curves for selected portions of a long record are used in adjusting the flow-duration curves for short records to the period of the long record. ...
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