Contents preface (VII) introduction 1—37

Discharge Verification. The discharge passing through the head regulator is normally worked out from discharge rating curves (tables) prepared by model experiments, both for free-fall and drowned conditions. This needs verification at site by current meter, etc. In case of significant variation, rating curves (tables) need to be modified in consultation with the research unit.

4. 
   Energy dissipating devices downstream of the Head Regulator. The performance of such devices should be monitored to check conformance with model results. In case of significant non-conformance, research unit should be consulted. Bank and bed protection of exit channel should be carried out regularly. Routine repairs should be done during closures, and emergency repairs may be undertaken as called for.