WATER BALANCE CONTROLS









Wastewater Controls


Industrial Discharge (0.-10. MGD)

MGD UNIT means Million Gallons Daily
2.2

UOSA Service Population (0-1,000,000)

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351906

Sewage/Person/Day (40-100 Gallons)

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70

Percent Inflow/Infiltration (0-50 %)

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20



Drinking Water Controls

Griffith Service Population (0-1,000,000)

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668012

Water Consumption/Person/Day (40-120 Gallons)

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80

Percent Non-Revenue Water (0-50 %)

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20



Watershed and Climate Controls

Average Bull Run Flow (20-1000 MGD)

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139

Average Occoquan River Flow (20-1000 MGD)

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261

Average Other Flows (20-1000 MGD)

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109

Average Precipitation (0.1-100 MGD)

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5

Average Evaporation (0.1-100 MGD)

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6



Pool Elevation Threshold

Reservoir Pool Elevation Threshold (80-100 ft)

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86


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