Restrictor Plate
A satellite agency discharges wastewater to a receiving agency through this 27-in sewer for subsequent conveyance and treatment. The minimum and maximum dry weather flow rates are 0.6 MGD and 1.8 MGD. Much greater flows were observed in wet weather, creating problems for the receiving agency. In an attempt to regulate peak flows, the receiving agency installed a restrictor plate to limit the amount of inflow received from the satellite agency. The restrictor plate was effective and limited the incoming flow to 6.4 MGD. This scattergraph displays data from a flow monitor located just upstream from the restrictor plate.
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