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ENTRY OF FLOW MEASUREMENT DATA FLOW & ASSOCIATED LEVEL MEASUREMENT –STAGE-DISCHARGE RELATIOSHIP –DISCHARGE BY VELOCITY-AREA METHOD *FLOATS *SLOPE-AREA.

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Presentation on theme: "ENTRY OF FLOW MEASUREMENT DATA FLOW & ASSOCIATED LEVEL MEASUREMENT –STAGE-DISCHARGE RELATIOSHIP –DISCHARGE BY VELOCITY-AREA METHOD *FLOATS *SLOPE-AREA."— Presentation transcript:

1 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

2 OHS - 2

3 OHS - 3

4 OHS - 4

5 OHS - 5

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

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

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

9 FLOW MEASUREMENT - AREA VELOCITY METHOD COMPARTMENT 1COMPARTMENT 2

10 OHS - 8

11 OHS - 9

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

13 OHS - 11

14 OHS - 12

15 OHS - 13

16 OHS - 14

17 Water depth

18

19 Airline Correction Wetline Correction

20 Airline depth Reading = 3. 5 m

21 Reset counter Reading = 0. 0 m

22 Reading = 4. 2 m Water depth

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

24 OHS - 14

25 OHS - 15

26 OBLIQUE FLOW OHS - 21

27 OHS - 22

28 OHS - 23

29 MEAN VELOCITY PROFILE OHS - 24

30 SEGMENTAL FLOWS OHS - 25

31 OHS - 26

32 FLOAT OBSERVATIONS OHS - 27

33 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

34 OHS - 29

35 OHS - 30

36 OHS - 31

37 OHS - 32


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