12-Inch Parshall Flume Discharge Table
70% Submergence Transition
Formulas (H in feet):
Formulas (H in meters):
FEET
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.23
0.24
0.25
0.26
0.27
0.28
0.29
0.30
Sources:
INCHES METERS
0.12
0.24
0.36
0.48
0.60
0.72
0.84
0.96
1.08
1.20
1.32
1.44
1.56
1.68
1.80
1.92
2.04
2.16
2.28
2.40
2.52
2.64
2.76
2.88
3.00
3.12
3.24
3.36
3.48
3.60
0.0030
0.0061
0.0091
0.0122
0.0152
0.0183
0.0213
0.0244
0.0274
0.0305
0.0335
0.0366
0.0396
0.0427
0.0457
0.0488
0.0518
0.0549
0.0579
0.0610
0.0640
0.0671
0.0701
0.0732
0.0762
0.0792
0.0823
0.0853
0.0884
0.0914
1.522
CFS = 4 Hft.
L/S = 690.9 Hm 1.522
CFS
GPM
1.522
GPM = 1795 Hft.
M3/HR = 2487 Hm 1.522
MGD
L/S
±3-5% Accuracy
MGD = 2.585 Hft. 1.522
M3/HR
Excessive error due to fluid-flow properties and boundary conditions
0.1202
0.1390
0.1587
0.1793
0.2007
0.2229
0.2459
0.2697
0.2942
0.3194
0.3453
0.3719
0.3992
0.4272
0.4558
0.4850
0.5148
0.5452
0.5763
0.6079
0.6401
53.97
62.39
71.22
80.45
90.06
100.0
110.4
121.0
132.0
143.3
155.0
166.9
179.2
191.7
204.5
217.7
231.0
244.7
258.6
272.8
287.3
0.0777
0.0898
0.1026
0.1159
0.1297
0.1440
0.1589
0.1743
0.1901
0.2064
0.2232
0.2404
0.2580
0.2761
0.2946
0.3134
0.3327
0.3524
0.3725
0.3929
0.4137
3.405
3.937
4.494
5.077
5.683
6.312
6.963
7.637
8.331
9.045
9.780
10.53
11.31
12.10
12.91
13.73
14.58
15.44
16.32
17.22
18.13
Water Measurement Manual, 3rd Edition, United States Department of the Interior, Bureau of Reclamation
ASTM D 1941-91 (2007): Standard Test Method for Open Channel Flow Measurement of Water with Parshall Flume
12.25
14.17
16.17
18.27
20.45
22.71
25.06
27.48
29.97
32.55
35.19
37.90
40.68
43.53
46.44
49.42
52.46
55.56
58.72
61.94
65.22
12-Inch Parshall Flume Discharge Table
70% Submergence Transition
Formulas (H in feet):
Formulas (H in meters):
FEET
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
0.65
0.66
0.67
0.68
0.69
0.70
0.71
0.72
0.73
0.74
0.75
0.76
0.77
0.78
0.79
0.80
Sources:
INCHES METERS
3.72
3.84
3.96
4.08
4.20
4.32
4.44
4.56
4.68
4.80
4.92
5.04
5.16
5.28
5.40
5.52
5.64
5.76
5.88
6.00
6.12
6.24
6.36
6.48
6.60
6.72
6.84
6.96
7.08
7.20
7.32
7.44
7.56
7.68
7.80
7.92
8.04
8.16
8.28
8.40
8.52
8.64
8.76
8.88
9.00
9.12
9.24
9.36
9.48
9.60
0.0945
0.0975
0.1006
0.1036
0.1067
0.1097
0.1128
0.1158
0.1189
0.1219
0.1250
0.1280
0.1311
0.1341
0.1372
0.1402
0.1433
0.1463
0.1494
0.1524
0.1554
0.1585
0.1615
0.1646
0.1676
0.1707
0.1737
0.1768
0.1798
0.1829
0.1859
0.1890
0.1920
0.1951
0.1981
0.2012
0.2042
0.2073
0.2103
0.2134
0.2164
0.2195
0.2225
0.2256
0.2286
0.2316
0.2347
0.2377
0.2408
0.2438
1.522
CFS = 4 Hft.
L/S = 690.9 Hm 1.522
1.522
GPM = 1795 Hft.
M3/HR = 2487 Hm 1.522
±3-5% Accuracy
MGD = 2.585 Hft. 1.522
CFS
GPM
MGD
L/S
M3/HR
0.6728
0.7062
0.7400
0.7744
0.8093
0.8448
0.8808
0.9173
0.9542
0.9917
1.030
1.068
1.107
1.147
1.186
1.227
1.268
1.309
1.351
1.393
1.435
1.478
1.522
1.566
1.610
1.655
1.700
1.746
1.792
1.838
1.885
1.932
1.980
2.028
2.076
2.125
2.174
2.224
2.274
2.324
2.375
2.426
2.478
2.529
2.582
2.634
2.687
2.740
2.794
2.848
302.0
316.9
332.1
347.6
363.2
379.1
395.3
411.7
428.3
445.1
462.1
479.4
496.9
514.6
532.5
550.6
568.9
587.4
606.2
625.1
644.2
663.5
683.1
702.8
722.7
742.8
763.1
783.5
804.2
825.0
846.0
867.2
888.6
910.2
931.9
953.8
975.9
998.1
1021
1043
1066
1089
1112
1135
1159
1182
1206
1230
1254
1278
0.4349
0.4564
0.4783
0.5005
0.5231
0.5460
0.5692
0.5928
0.6167
0.6410
0.6655
0.6904
0.7155
0.7410
0.7668
0.7929
0.8193
0.8459
0.8729
0.9002
0.9277
0.9555
0.9837
1.012
1.041
1.070
1.099
1.128
1.158
1.188
1.218
1.249
1.280
1.311
1.342
1.374
1.405
1.437
1.470
1.502
1.535
1.568
1.601
1.635
1.669
1.703
1.737
1.771
1.806
1.841
19.05
20.00
20.96
21.93
22.92
23.92
24.94
25.98
27.02
28.09
29.16
30.25
31.35
32.47
33.60
34.74
35.90
37.07
38.25
39.44
40.65
41.87
43.10
44.35
45.60
46.87
48.15
49.44
50.74
52.06
53.39
54.72
56.07
57.43
58.80
60.19
61.58
62.98
64.40
65.83
67.26
68.71
70.17
71.63
73.11
74.60
76.10
77.61
79.13
80.66
68.56
71.96
75.41
78.91
82.47
86.08
89.75
93.47
97.24
101.1
104.9
108.8
112.8
116.8
120.9
125.0
129.2
133.4
137.6
141.9
146.3
150.7
155.1
159.6
164.1
168.6
173.3
177.9
182.6
187.3
192.1
196.9
201.8
206.7
211.6
216.6
221.6
226.6
231.7
236.9
242.0
247.2
252.5
257.8
263.1
268.4
273.8
279.3
284.7
290.2
Water Measurement Manual, 3rd Edition, United States Department of the Interior, Bureau of Reclamation
ASTM D 1941-91 (2007): Standard Test Method for Open Channel Flow Measurement of Water with Parshall Flume
12-Inch Parshall Flume Discharge Table
70% Submergence Transition
Formulas (H in feet):
Formulas (H in meters):
FEET
0.81
0.82
0.83
0.84
0.85
0.86
0.87
0.88
0.89
0.90
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
1.08
1.09
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.30
Sources:
INCHES METERS
9.72
9.84
9.96
10.08
10.20
10.32
10.44
10.56
10.68
10.80
10.92
11.04
11.16
11.28
11.40
11.52
11.64
11.76
11.88
12.00
12.12
12.24
12.36
12.48
12.60
12.72
12.84
12.96
13.08
13.20
13.32
13.44
13.56
13.68
13.80
13.92
14.04
14.16
14.28
14.40
14.52
14.64
14.76
14.88
15.00
15.12
15.24
15.36
15.48
15.60
0.2469
0.2499
0.2530
0.2560
0.2591
0.2621
0.2652
0.2682
0.2713
0.2743
0.2774
0.2804
0.2835
0.2865
0.2896
0.2926
0.2957
0.2987
0.3018
0.3048
0.3078
0.3109
0.3139
0.3170
0.3200
0.3231
0.3261
0.3292
0.3322
0.3353
0.3383
0.3414
0.3444
0.3475
0.3505
0.3536
0.3566
0.3597
0.3627
0.3658
0.3688
0.3719
0.3749
0.3780
0.3810
0.3840
0.3871
0.3901
0.3932
0.3962
1.522
CFS = 4 Hft.
L/S = 690.9 Hm 1.522
1.522
GPM = 1795 Hft.
M3/HR = 2487 Hm 1.522
±3-5% Accuracy
MGD = 2.585 Hft. 1.522
CFS
GPM
MGD
L/S
M3/HR
2.903
2.957
3.012
3.068
3.123
3.180
3.236
3.293
3.350
3.407
3.465
3.523
3.582
3.640
3.700
3.759
3.819
3.879
3.939
4.000
4.061
4.122
4.184
4.246
4.308
4.371
4.434
4.497
4.561
4.624
4.689
4.753
4.818
4.883
4.948
5.014
5.080
5.146
5.212
5.279
5.346
5.414
5.481
5.549
5.618
5.686
5.755
5.824
5.894
5.963
1303
1327
1352
1377
1402
1427
1452
1478
1503
1529
1555
1581
1607
1634
1660
1687
1714
1741
1768
1795
1823
1850
1878
1906
1934
1962
1990
2018
2047
2075
2104
2133
2162
2191
2221
2250
2280
2309
2339
2369
2399
2430
2460
2491
2521
2552
2583
2614
2645
2676
1.876
1.911
1.947
1.983
2.019
2.055
2.091
2.128
2.165
2.202
2.240
2.277
2.315
2.353
2.391
2.429
2.468
2.507
2.546
2.585
2.625
2.664
2.704
2.744
2.784
2.825
2.866
2.906
2.948
2.989
3.030
3.072
3.114
3.156
3.198
3.240
3.283
3.326
3.369
3.412
3.455
3.499
3.543
3.587
3.631
3.675
3.719
3.764
3.809
3.854
82.20
83.75
85.31
86.88
88.46
90.05
91.64
93.25
94.87
96.50
98.13
99.78
101.4
103.1
104.8
106.5
108.1
109.8
111.6
113.3
115.0
116.7
118.5
120.2
122.0
123.8
125.6
127.4
129.2
131.0
132.8
134.6
136.4
138.3
140.1
142.0
143.9
145.7
147.6
149.5
151.4
153.3
155.2
157.2
159.1
161.0
163.0
164.9
166.9
168.9
295.8
301.3
307.0
312.6
318.3
324.0
329.7
335.5
341.4
347.2
353.1
359.0
365.0
371.0
377.0
383.0
389.1
395.3
401.4
407.6
413.8
420.1
426.4
432.7
439.0
445.4
451.8
458.3
464.7
471.2
477.8
484.3
490.9
497.6
504.2
510.9
517.6
524.4
531.1
538.0
544.8
551.7
558.6
565.5
572.4
579.4
586.4
593.5
600.6
607.7
Water Measurement Manual, 3rd Edition, United States Department of the Interior, Bureau of Reclamation
ASTM D 1941-91 (2007): Standard Test Method for Open Channel Flow Measurement of Water with Parshall Flume
12-Inch Parshall Flume Discharge Table
70% Submergence Transition
Formulas (H in feet):
Formulas (H in meters):
FEET
1.31
1.32
1.33
1.34
1.35
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.44
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.56
1.57
1.58
1.59
1.60
1.61
1.62
1.63
1.64
1.65
1.66
1.67
1.68
1.69
1.70
1.71
1.72
1.73
1.74
1.75
1.76
1.77
1.78
1.79
1.80
Sources:
INCHES METERS
15.72
15.84
15.96
16.08
16.20
16.32
16.44
16.56
16.68
16.80
16.92
17.04
17.16
17.28
17.40
17.52
17.64
17.76
17.88
18.00
18.12
18.24
18.36
18.48
18.60
18.72
18.84
18.96
19.08
19.20
19.32
19.44
19.56
19.68
19.80
19.92
20.04
20.16
20.28
20.40
20.52
20.64
20.76
20.88
21.00
21.12
21.24
21.36
21.48
21.60
0.3993
0.4023
0.4054
0.4084
0.4115
0.4145
0.4176
0.4206
0.4237
0.4267
0.4298
0.4328
0.4359
0.4389
0.4420
0.4450
0.4481
0.4511
0.4542
0.4572
0.4602
0.4633
0.4663
0.4694
0.4724
0.4755
0.4785
0.4816
0.4846
0.4877
0.4907
0.4938
0.4968
0.4999
0.5029
0.5060
0.5090
0.5121
0.5151
0.5182
0.5212
0.5243
0.5273
0.5304
0.5334
0.5364
0.5395
0.5425
0.5456
0.5486
1.607
CFS = 32.00 Hft.
L/S = 6115 Hm 1.607
1.607
GPM = 14362 Hft.
M3/HR = 22010 Hm 1.607
±3-5% Accuracy
MGD = 20.68 Hft. 1.607
CFS
GPM
MGD
L/S
M3/HR
6.033
6.103
6.174
6.245
6.316
6.387
6.459
6.531
6.603
6.675
6.748
6.821
6.894
6.968
7.041
7.115
7.190
7.264
7.339
7.414
7.490
7.565
7.641
7.717
7.794
7.870
7.947
8.024
8.102
8.180
8.258
8.336
8.414
8.493
8.572
8.651
8.730
8.810
8.890
8.970
9.051
9.131
9.212
9.293
9.375
9.456
9.538
9.621
9.703
9.786
2708
2739
2771
2803
2835
2867
2899
2931
2963
2996
3028
3061
3094
3127
3160
3193
3227
3260
3294
3328
3361
3395
3429
3464
3498
3532
3567
3601
3636
3671
3706
3741
3776
3812
3847
3883
3918
3954
3990
4026
4062
4098
4134
4171
4207
4244
4281
4318
4355
4392
3.899
3.945
3.990
4.036
4.082
4.128
4.174
4.221
4.267
4.314
4.361
4.408
4.456
4.503
4.551
4.599
4.647
4.695
4.743
4.792
4.841
4.889
4.938
4.988
5.037
5.087
5.136
5.186
5.236
5.286
5.337
5.387
5.438
5.489
5.540
5.591
5.642
5.694
5.746
5.797
5.849
5.902
5.954
6.006
6.059
6.112
6.165
6.218
6.271
6.324
170.9
172.8
174.8
176.9
178.9
180.9
182.9
184.9
187.0
189.0
191.1
193.2
195.2
197.3
199.4
201.5
203.6
205.7
207.8
210.0
212.1
214.2
216.4
218.6
220.7
222.9
225.1
227.3
229.4
231.6
233.9
236.1
238.3
240.5
242.8
245.0
247.2
249.5
251.8
254.0
256.3
258.6
260.9
263.2
265.5
267.8
270.1
272.5
274.8
277.1
614.8
621.9
629.1
636.3
643.6
650.8
658.1
665.5
672.8
680.2
687.6
695.1
702.5
710.0
717.5
725.1
732.6
740.2
747.9
755.5
763.2
770.9
778.6
786.4
794.2
802.0
809.8
817.7
825.6
833.5
841.4
849.4
857.4
865.4
873.5
881.5
889.6
897.7
905.9
914.1
922.3
930.5
938.7
947.0
955.3
963.6
972.0
980.3
988.7
997.1
Water Measurement Manual, 3rd Edition, United States Department of the Interior, Bureau of Reclamation
ASTM D 1941-91 (2007): Standard Test Method for Open Channel Flow Measurement of Water with Parshall Flume
12-Inch Parshall Flume Discharge Table
70% Submergence Transition
Formulas (H in feet):
Formulas (H in meters):
FEET
1.81
1.82
1.83
1.84
1.85
1.86
1.87
1.88
1.89
1.90
1.91
1.92
1.93
1.94
1.95
1.96
1.97
1.98
1.99
2.00
2.01
2.02
2.03
2.04
2.05
2.06
2.07
2.08
2.09
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21
2.22
2.23
2.24
2.25
2.26
2.27
2.28
2.29
2.30
Sources:
INCHES METERS
21.72
21.84
21.96
22.08
22.20
22.32
22.44
22.56
22.68
22.80
22.92
23.04
23.16
23.28
23.40
23.52
23.64
23.76
23.88
24.00
24.12
24.24
24.36
24.48
24.60
24.72
24.84
24.96
25.08
25.20
25.32
25.44
25.56
25.68
25.80
25.92
26.04
26.16
26.28
26.40
26.52
26.64
26.76
26.88
27.00
27.12
27.24
27.36
27.48
27.60
0.5517
0.5547
0.5578
0.5608
0.5639
0.5669
0.5700
0.5730
0.5761
0.5791
0.5822
0.5852
0.5883
0.5913
0.5944
0.5974
0.6005
0.6035
0.6066
0.6096
0.6126
0.6157
0.6187
0.6218
0.6248
0.6279
0.6309
0.6340
0.6370
0.6401
0.6431
0.6462
0.6492
0.6523
0.6553
0.6584
0.6614
0.6645
0.6675
0.6706
0.6736
0.6767
0.6797
0.6828
0.6858
0.6888
0.6919
0.6949
0.6980
0.7010
1.522
CFS = 4 Hft.
L/S = 690.9 Hm 1.522
1.522
GPM = 1795 Hft.
M3/HR = 2487 Hm 1.522
±3-5% Accuracy
MGD = 2.585 Hft. 1.522
CFS
GPM
MGD
L/S
M3/HR
9.868
9.952
10.03
10.12
10.20
10.29
10.37
10.46
10.54
10.62
10.71
10.80
10.88
10.97
11.05
11.14
11.23
11.31
11.40
11.49
11.58
11.66
11.75
11.84
11.93
12.02
12.11
12.19
12.28
12.37
12.46
12.55
12.64
12.73
12.82
12.92
13.01
13.10
13.19
13.28
13.37
13.47
13.56
13.65
13.74
13.84
13.93
14.02
14.12
14.21
4429
4466
4504
4541
4579
4616
4654
4692
4730
4768
4807
4845
4883
4922
4961
5000
5038
5077
5116
5156
5195
5234
5274
5313
5353
5393
5433
5473
5513
5553
5593
5634
5674
5715
5756
5796
5837
5878
5919
5960
6002
6043
6085
6126
6168
6210
6251
6293
6336
6378
6.378
6.432
6.486
6.540
6.594
6.648
6.703
6.757
6.812
6.867
6.922
6.977
7.033
7.088
7.144
7.200
7.256
7.312
7.368
7.424
7.481
7.538
7.595
7.652
7.709
7.766
7.823
7.881
7.939
7.997
8.055
8.113
8.171
8.230
8.288
8.347
8.406
8.465
8.524
8.583
8.643
8.702
8.762
8.822
8.882
8.942
9.003
9.063
9.124
9.184
279.5
281.8
284.2
286.6
288.9
291.3
293.7
296.1
298.5
300.9
303.3
305.7
308.2
310.6
313.0
315.5
317.9
320.4
322.9
325.3
327.8
330.3
332.8
335.3
337.8
340.3
342.8
345.3
347.9
350.4
352.9
355.5
358.1
360.6
363.2
365.8
368.3
370.9
373.5
376.1
378.7
381.3
383.9
386.6
389.2
391.8
394.5
397.1
399.8
402.4
1006
1014
1023
1031
1040
1048
1057
1065
1074
1083
1091
1100
1109
1118
1126
1135
1144
1153
1162
1171
1180
1188
1197
1206
1215
1224
1234
1243
1252
1261
1270
1279
1288
1298
1307
1316
1325
1335
1344
1353
1363
1372
1382
1391
1400
1410
1419
1429
1438
1448
Water Measurement Manual, 3rd Edition, United States Department of the Interior, Bureau of Reclamation
ASTM D 1941-91 (2007): Standard Test Method for Open Channel Flow Measurement of Water with Parshall Flume
12-Inch Parshall Flume Discharge Table
70% Submergence Transition
Formulas (H in feet):
Formulas (H in meters):
FEET
2.31
2.32
2.33
2.34
2.35
2.36
2.37
2.38
2.39
2.40
2.41
2.42
2.43
2.44
2.45
2.46
2.47
2.48
2.49
2.50
Sources:
INCHES METERS
27.72
27.84
27.96
28.08
28.20
28.32
28.44
28.56
28.68
28.80
28.92
29.04
29.16
29.28
29.40
29.52
29.64
29.76
29.88
30.00
0.7041
0.7071
0.7102
0.7132
0.7163
0.7193
0.7224
0.7254
0.7285
0.7315
0.7346
0.7376
0.7407
0.7437
0.7468
0.7498
0.7529
0.7559
0.7590
0.7620
1.522
CFS = 4 Hft.
L/S = 690.9 Hm 1.522
1.522
GPM = 1795 Hft.
M3/HR = 2487 Hm 1.522
±3-5% Accuracy
MGD = 2.585 Hft. 1.522
CFS
GPM
MGD
L/S
M3/HR
14.30
14.40
14.49
14.59
14.68
14.78
14.87
14.97
15.07
15.16
15.26
15.35
15.45
15.55
15.64
15.74
15.84
15.94
16.04
16.13
6420
6462
6505
6547
6590
6633
6675
6718
6761
6804
6848
6891
6934
6978
7021
7065
7109
7153
7197
7241
9.245
9.306
9.367
9.428
9.490
9.551
9.613
9.675
9.737
9.799
9.861
9.923
9.986
10.05
10.11
10.17
10.24
10.30
10.36
10.43
405.1
407.8
410.5
413.1
415.8
418.5
421.2
423.9
426.7
429.4
432.1
434.8
437.6
440.3
443.1
445.8
448.6
451.3
454.1
456.9
1458
1467
1477
1487
1496
1506
1516
1525
1535
1545
1555
1565
1574
1584
1594
1604
1614
1624
1634
1644
Water Measurement Manual, 3rd Edition, United States Department of the Interior, Bureau of Reclamation
ASTM D 1941-91 (2007): Standard Test Method for Open Channel Flow Measurement of Water with Parshall Flume