H flumes are a hybrid between flumes and weirs. H flumes
can measure a wide variety of flows, from very low to extremely high volumes. H flumes were developed by the US Forest Service as
small portable flumes to measure water flow. The measuring point of the H flume, selected during development, is in the draw down
effect, this means that H flumes are very sensitive to slight errors in measuring point position. A straight uniform approach must be
provided that matches the inlet width of the H flume. H flumes require a non-impeded discharge so that there can be no submergence
(backup in the flume). For more information on monitoring H flumes see the FC200, Open Channel Flow Monitor.
Table of Dimensions
Flume Size/Type
W
L
T
Recommended Approach Channel Length
Price
0.4HS
0.42
0.6
0.02
2.0
Call
0.6HS
0.63
0.9
0.03
3.0
Call
0.50H
0.95
0.675
0.05
2.5
$402
0.75H
1.425
1.0125
0.075
3.75
$592
1.00H
1.9
1.35
0.1
5
$670
1.50H
2.85
2.025
0.15
7.5
$875
2.00H
3.8
2.7
0.2
10.0
$965
Prices listed are for United States and Canada only. Call or e-mail us for pricing in other countries. Terms and ConditionsTable of Flow Data
Size/Type
0.4HS
0.6HS
0.50H
0.75H
1.00H
1.50H
2.00H
Range X:1
502
961
828
1595
2743
4845
7843
Min CFS
0.00016
0.00023
0.0004
0.0006
0.0007
0.0011
0.0014
Min MGD
0.0001
0.00014
0.0003
0.0004
0.0005
0.0007
0.0009
Max CFS
0.085
0.23
0.35
0.93
1.95
5.39
11.118
Max MGD
0.055
0.149
0.23
0.60
1.26
3.48
7.186
Complete Flow Table
NOTE: Flow tables are only valid
to the H Flume's height.