lecture_05 - RISING LIMB POINT OF RISE FALLING SEGMENT PEAK...

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Q k ¯ VA Q k ¯ VA Q CONC . 1 LECTURE 5 - RUNOFF AND STREAM FLOW 5.0 RUNOFF FROM A BASIN STORM FALLING IN THE UPPER END OF A DRAINAGE BASIN STORM FALLING IN THE LOWER END OF A DRAINAGE BASIN 5.1 STAGES OF RUNOFF CYCLE DIRECT PRECIPITATION INFILTRATION RUNOFF BANK STORAGE INTERFLOW BASEFLOW 5.2 MEASUREMENT OF STREAM FLOW GAGING OF STREAM DISCHARGE ! FLOATS ! CURRENT METERS ROTATING, ULTRASONIC, ELECTROMAGNETIC ! CHEMICAL
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Q kLH x Q ( FT 3 / SEC ) 1.49 n AR 2 3 S 1 2 R A WETTED PERIMETER Q a [ H b ] c ! STRUCTURAL -WEIRS, FLUME ! MANNING EQUATION WHERE n = MANNING COEFFICIENT A = CROSSECTIONAL AREA (FT ) 2 R = HYDRAULIC RADIUS (FT) S = SLOPE (FT/FT) 5.3 SELECTION OF GAGING STATION SINGLE CHANNEL STABLE CHANNEL GEOMETRY NO OVERBANK FLOW GOOD ACCESSABILITY RELIABLE STAGE-DISCHARGE GEOMETRY 5.4 STAGE-DISCHARGE RELATION SIMPLE RATING CURVE WHERE a AND c ARE CONSTANTS H = STAGE
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b = CONSTANT REPRESENTING GAGE READING FOR ZERO DISCHARGE 5.5 STREAMFLOW RECORDS UNITED STATES (MICHIGAN) WORLD 5.6 ELEMENTS OF THE HYDROGRAPH APPROACH SEGMENT
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Unformatted text preview: RISING LIMB POINT OF RISE FALLING SEGMENT PEAK POINT OR CREST POINT OF INFLECTION RECESSION LIMB 5.7 HYDROGRAPH SHAPE FACTORS AFFECTING HYDROGRAPH CHARACTERISTICS ! RAINFALL DISTRIBUTION AND INTENSITY ! DRAINAGE CHARACTERISTICS ! SOIL AND LAND USE TIME TO PEAK V.S. TIME LAG 5.8 STREAMFLOW RECESSION Q Q o e & at e & at Q Q o & at ln Q Q o a & 1 t ln Q Q o N bA 0.2 RECESSION EQUATION ! WHERE Q = FLOW AT START OF RECESSION o a = RECESSION CONSTANT t = TIME SINCE RECESSION BEGAN ! SOLUTION FOR a 5.9 HYDROGRAPH SEPARATION STORM EVENTS ! AREA METHOD WHERE: A = DRAINAGE BASIN AREA (MILES ) 2 b = METRIC CONVERSION (0.827) ! BARNS METHOD THREE COMPONENT SEPARATION LONG-TERM RECORDS COMPLEX HYDROGRAPHS 5.10 FLOW-DURATION CURVES STEADY V.S. . FLASHY STREAMS ! CLIMATOLOGIC FACTORS ! PHYSICAL FACTORS 5.11 GAINING AND LOSING STREAMS...
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This note was uploaded on 07/25/2008 for the course GLG 411 taught by Professor Larson during the Fall '06 term at Michigan State University.

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lecture_05 - RISING LIMB POINT OF RISE FALLING SEGMENT PEAK...

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