18. CSO Side Weir
This scattergraph displays data from a flow monitor installed in a 120-in sewer located just upstream from a CSO regulator. Dry weather flows are funneled into a 54-in sewer and continue to the WWTP. However, once the flow depth exceeds 28 inches, additional flow is carried over a side weir to a 108-in sewer and is discharged to the receiving water. This CSO lasted for over five hours and discharged approximately 7,423,000 gallons of untreated wastewater to the receiving water.
