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close this bookA Training Manual in Conducting a Workshop in the Design, Construction, Operation, Maintenance and Repair of Hydrams (Peace Corps, 1981, 216 p.)
close this folderSession 3: Water measurement techniques (3 hours)
View the document(introduction...)
View the documentHandout 3A: Using a Weir
View the documentHandout 3B: Using a Weir - diagram
View the documentHandout 3C: Weir table
View the documentHandout 3C: Weir table - metric
View the documentHandout 3D: The float method of measurement

Handout 3C: Weir table

Height of water above weir notch in inches


0

1/8

1/4

3/7

1/2

5/6

3/4

7/8

0

000

.0748

.374

.673

1.047

1.421

1.945

2.394

1

2.992

3.516

4.114

4.787

5.46

6.134

6.882

7.63

2

8.452

9.2

10.098

10.92

11.818

12.716

13.614

14.586

3

15.484

16.531

17.503

18.55

19.523

20.645

21.692

22.814

4

23.936

25.058

26.18

27.377

28.499

29.696

30.967

32.164

5

33.436

34.707

35.979

37.25

38.522

39.868

41/215

42.561

6

43.908

45.329

46.75

48.171

49.518

51.014

52/435

53.931

7

55.352

56.848

58.344

59.915

61.411

62.982

64.552

66.048

8

67.694

69.265

70.836

72.481

74.127

75.772

77.418

79.064

9

80.784

82.504

84.15

85.87

87.591

89.311

91.032

92.827

10

94 547

96.342

98.138

99.933

101.73

103.6

105.393

107.263

Flow rate per inch of weir notch in gal/min.