There are more than 230 storm sewer outfalls along the three major creeks to discharge storm water runoff collected by the storm sewers. The Town conducted a stormwater outfall study in 2001 and the study revealed that the majority of the outfalls constructed before the stormwater quality control concept didn't have any quality control mechanism.
The outcome of the 2001 study was the identification of SWM upgrade opportunities, including the location of specific quality and erosion enhancement features. Based on the outcome of the assessment, a total of 14 water quality and erosion control enhancement projects were identified and prioritized based on environmental and cost factors. Based on the study recommendation, a pond construction program was developed and included in the capital budget. Six new stormwater management facilities were constructed under the pond program including four wet ponds/wetland facilities and two large oil and grit separators.
The 2001 study report was revised again in 2019 study and under the study many of the outfalls were revisited and previous recommendations were reevaluated based on:
- Contributing drainage area
- Contributing impervious area
- SWM water quality and erosion control
- Impacts to the physical environment and sensitive channel reaches
- Construction cost
- Private property constraints
Twelve stormwater enhancement projects (ponds, plunge pools and oil and grit separators) were proposed under the study update and prioritized. The current Town Pond construction program was revised based on this priority list and included in the next 10 to 20 years capital budget forecast for construction.
