Transcription of 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. 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 flo
with the practice agreed upon by the World Meteorological Organization. When streamflow has been regulated by storage or diversions, or when the regimen varied during the period of record, a cnrve for the total period has little meaning. The period used for th<»- flow-dura tion curve depends on the purpose of the curve.
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