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Published byAmerica Rodgerson Modified about 1 year ago

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ENTRY OF FLOW MEASUREMENT DATA FLOW & ASSOCIATED LEVEL MEASUREMENT –STAGE-DISCHARGE RELATIOSHIP –DISCHARGE BY VELOCITY-AREA METHOD *FLOATS *SLOPE-AREA METHOD –PRIMARY MODULE (SWDES) PROVIDES DATA ENTRY FORMS DEDICATED TO SUCH REQUIREMENT *DETAILED FLOW MEASUREMENTS *SUMMARY STAGE-DISCHARGE HISTORICAL OBSERVATIONS CROSS-SECTION PROFILE DATA OHS - 1

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OHS - 2

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OHS - 3

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OHS - 4

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OHS - 5

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VELOCITY DISTRIBUTION IN RIVER CROSS SECTION 1.2 m/s 1.0 m/s 0.8 m/s 0.6 m/s OHS - 6

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FLOW MEASUREMENT - AREA VELOCITY METHOD b2 b3 b4 b5 b6 b7 b8 b18 b19 D4, V4 b1 b17 OHS - 7

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FLOW MEASUREMENT - AREA VELOCITY METHOD b2 b3 b4 b5 b6 b7 b8 b18 b19 b1 b17 SEGMENT SECTIONS

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FLOW MEASUREMENT - AREA VELOCITY METHOD COMPARTMENT 1COMPARTMENT 2

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OHS - 8

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OHS - 9

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DATA ENTRY FORMS DEDICATED DATA ENTRY FORMS –GENERAL & GAUGE INFORMATION –CURRENT METERING OBSERVATIONS –FLOAT OBSERVATIONS –SLOPE OBSERVATIONS –SUMMARY STAGE-DISCHARGE DATA OHS - 10

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OHS - 11

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OHS - 12

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OHS - 13

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OHS - 14

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Water depth

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Airline Correction Wetline Correction

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Airline depth Reading = 3. 5 m

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Reset counter Reading = 0. 0 m

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Reading = 4. 2 m Water depth

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Reading = 3.5 m Reset the counter Reading = 0.0 m Observed depth =4.35 m = m Total correction = 0.15m

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OHS - 14

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OHS - 15

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OBLIQUE FLOW OHS - 21

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OHS - 22

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OHS - 23

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MEAN VELOCITY PROFILE OHS - 24

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SEGMENTAL FLOWS OHS - 25

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OHS - 26

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FLOAT OBSERVATIONS OHS - 27

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FLOW ESTIMATE BY SLOPE-AREA METHOD HIGH STAGES WHEN VELOCITIES ARE DIFFICULT TO MEASURE –ESTIMATE CAN BE BASED ON SLOPE-AREA METHOD *SLOPE OF WATER SURFACE PROFILE IS OBSERVED *MANNING’S EQUATION USED TO GET DISCHARGES OHS - 28

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OHS - 29

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OHS - 30

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OHS - 31

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OHS - 32

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