Critical Depth

WMO >> HWR >> Assessment of the Performance of Flow Measurement Instruments and Techniques >> Discharge techniques database

 

Select a reference or Standard» 
 = Mentioned as been used by at least one National Hydrological Service (NHS)

WMO:

Manual on stream gauging (WMO N° 1044)

ISO N°:

  ISO 3454: Hydrometry -- Direct depth sounding and suspension equipment
  ISO 4366: Hydrometry -- Echo sounders for water depth measurements
  ISO 4373: Hydrometry -- Water level measuring devices

CEN N°:

Sorry no entry available

Other references:

  AS 3778.6.2   [Australia]
  AS 3778.6.4   [Australia]
  AS 3778.6.5   [Australia]

Methods

» Velocity-area method
» Tracer/Dye-dilution method
» Stage-discharge relations
» Stage-velocity relations
» Slope-area
» Slope-conveyance
» Indirect Methods using energy equation (culvert, bridge, etc.)
» Critical Depth
» Hydraulic structures
» Rainfall/runoff with rain gauges
» Rainfall/runoff with weather radar
» Rainfall/runoff coupled with weather model
» Satellite/aerial based lidar system
» Other methods
» General standards