Flow measurement with long-throated flumes under uncertain submergence
The evolving circumstances under which irrigation districts operate include growing demands for more accurate knowledge and accountability of flow throughout the conveyance network, along with increased needs for timely awareness when unexpected flow conditions are present. For open channel conveyance systems, critical-flow structures (flumes or weirs) offer the simplicity of a direct correlation between upstream water level and a corresponding discharge. Unfortunately at many locations where flow measurement is desired there may be insufficient head available for operation of a critical-flow ...
(For more, see "View full record.")