Irrigation Research Institute Roorkee (Uttarakhand) 

(An ISO 9001:2008 Certified Organisation)

' Bigger Models ..... Better Results '

Sister Organisation

Irrigation Design Organisation, Roorkee

About IDO

Consultancy Areas

Main Designs Carried out

Computerised Draughting Facility

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Facilities Available at Hydarulics Research Station


  • Sedimentation/Desilting chamber/tank
  • Spillway, Under sluice and Energy dissipation devices
  • Hydraulic Design of Power Intake
  • Determination of axes of Barrage, bridge, etc.
  • Spillway and Sediment Transport
  • Water Quality Studies
  • Estimation of High Flood Level
  • Studies for flood protective measures
  • studies for Canal, Canal Head and Cross Regulators, Cross drainage works (Aquaduct, Super passage, siphon aquaduct, level crossing), etc.
  • Sediment Excluder and Sediment Ejector
  • Surge Tank and Penstocks
  • Diversion Tunnel
  • Formation of Vortex in front of power intake/diversion tunnel/HRT, etc.
  • Studies of Reservoir sedimentation
  • Studies for afflux due to construction of dam/barrage/bridges, etc.
  • Studies for guide and afflux bunds due to construction of dam/barrage/bridges, etc.
  • Pump Storage Plants
  • Calibration of Current meter
  • Observations of meteorological parameters (Rainfall, min. & Max.. Temperature, Relative Humidity, Evaporation, soil Temperature, etc.), etc.

    Generally the following observations are taken on the model after reproducing the dam/barrage/weir and related structures:

  • Discharges passing through the bays/undersluice of spillway/glacis
  • Water levels at different locations and discharge for finding out depth of flow, water surface slope and afflux, etc
  • Velocities at different sections and in bays for determining discharge distribution and concentration of flow including at exit of stilling basin
  • Velocities along structures for assessing the stability
  • Angle of approaching flow to assess the obliquity
  • Surface and bed lines of flow for estimating curvature of flow
  • Erosion (Scour Pattern) on the upstream and downstream of the hydraulic structures
  • Locating areas where sediment deposition or scour may take place
  • Differential head at the piers and divide wall
  • Bed configuration during and after running the hydrograph
  • Afflux in the river due to structures
  • Possibility of formation of vortices in front of power intake, Intakes of HRT, Diversion tunnel, etc.
  • Coefficient of discharge for sluice bays, weir bays and head regulator under free flow/critical flow and sub-merged flow conditions
  • Energy dissipation in hydraulic jump under different inflow and tail water conditions and also for different operating condition of gates
  • Performance and hydraulic behaviour of river training works
  • Performance of the basin/plunge pool under oblique approach flow, if any
  • Flushing of sediments deposited vis-a-vis gate operation
  • Negative head/pressure on spillway nappe/weir glacis and at the toe of spillway near energy dissipation arrangement, along pier and abutment, breast wall, HRT/diversion tunnel, etc. wherever required
  • Selection of proper energy dissipation arrangement
  • Profile of undersluice and bays of different hydraulic structures.
  • Silt flushing ability of power intake, sedimentation tank, sediment excluder/ejector
  • Determination of dam/barrage/weir vis--vis power intake axes
  • Determination of different flow parameters such as cavitaion index, Froude number, hydraulic gradient/total energy line, flow behaviour in surge tank and at bifurcation of tunnel, upper/lower surge levels in tandem operation, etc.
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