the effect of effluent pipe discharge on dry run creek

The Effect of Effluent Pipe Discharge on Dry Run Creek

Benny Harken & Michael Stebbins

Goals

• For our project we wanted to see how effluent pipes discharge effects the water quality of Dry Run Creek.

Methods

• We chose 3 different sites– ROTH– University Ave– Towers

• At each site we sampled 3 different sets of water– Above– Effluent– Below

Methods

• We sampled 6 different parameters– pH– Total dissolved solids– Conductivity– Temperature– Dissolved oxygen– Turbidity

ROTH

• Our first location that we took samples from is located near the footbridge going across Dry Run Creek near the Well Monitoring Station

• The effluent pipe runs from Married Student Housing into the creek

Above Effluent Below8.1

8.15

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8.25

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8.35

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ROTH pH

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pH

Above Effluent Below0

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ROTH TDS


TDS


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ROTH Conductivity


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ROTH Temperature


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ROTH Dissolved Oxygen


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ROTH Turbidity

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Results

• Total dissolved solids and conductivity are directly related• Effluent had slight effect on pH, TDS, and

Conductivity

University Avenue Bike Trail

• Our second location is located under University Ave. right next to the Bike trail that runs under it which is located next to the Cedar Falls Lutheran Home

• The effluent pipe is located on the East side of the creek under the bridge


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8.05

8.1

8.15

8.2

8.25

8.3

8.35

University Ave pH


pH


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University Ave TDS


TDS


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University Ave Conductivity


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University Ave Temperature


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cius)


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University Ave Dissolved Oxygen


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University Ave Turbidity


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Results

• Total dissolved solids and conductivity are directly related• Effluent appeared to have virtually no

effect on the stream

Towers Location

• Our third location is located near Dancer and Rider under Campus Street

• The effluent pipe is located under the bridge that crosses Dry Run Creek


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Towers pH


pH


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Towers TDS


TDS


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Towers Conductivity


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Towers Temperature


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ture

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cius)


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Towers Dissolved Oxygen

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Diss

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Towers Turbidity


rbid

ity

Results

• Total dissolved solids and conductivity are directly related• Effluent had more significant effect on pH,

temperature, and turbidity • Little effect was noticed for DO,

conductivity, and TDS

Conclusion• Towers site had largest effect on stream• Largest volume of effluent water

• Overall there was no large effect for the parameters we sampled• Temperature differences could have been

due to shaded vs non shaded areas of the stream• Rain greatly reduces the conductivity and

total dissolved solids while increasing turbidity• Snow had no effect

Questions?

the effect of effluent pipe discharge on dry run creek

Documents

largest effect

large effect

significant effect

slight effect

campus streetthe effluent

lutheran homethe effluent

water quality of dry

turbidity little effect