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Chemical. The relationship between land use & likely aquatic life By: Clara Stunkel, Christy Schile, Breanna Creek, Steph Moxley, Cynthia May, Rachel Hayes, Alisa Fields.
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The relationship between land use & likely aquatic life
By: Clara Stunkel, Christy Schile, Breanna Creek, Steph Moxley, Cynthia May, Rachel Hayes, Alisa Fields
Typical Range for DO (dissolved oxygen) = 5.4 to 14.2 mg/L
Indiana Average = 9.8 mg/L
Our result = 10 mg/L
Dissolved oxygen refers to the amount of oxygen in water
Oxygen in water is a positive sign because it’s absence indicates water pollution.
Dissolved oxygen is affected by temperature (the warmer the water, the less oxygen it can hold.), atmospheric pressure, turbulence, photosynthesis, and amount of decaying material.
Typical Range = 133-1,157 colonies/100mL
Indiana Average = 645 colonies/100mL
Our result = 14,200 colonies/100mL
E. Coli is a specific species of fecal coliform bacteria.
Some E. Coli can lead to illness . The presence of E. Coli indicates fecal contamination.
Causes : human waste from poorly functioning septic systems, pet waste, wildlife, livestock/manure runoff from fields.
Typical range for pH : 7.2 to 8.8
Indiana Average : 8.0
Our result: 8.75
Typical range for nitrate: 0-36.08 mg/L
Indiana Average: 12.32 mg/L
Our result: 2 mg/L
Nitrates are essential nutrients for plant growth.
Causes: 1. manure
2. run off from
Typical Range: 0-173 NTU’s
Indiana Average: 36 NTU’s
Our result: 58 NTU’s
Turbidity is the relative clarity of the water and is measured by shinning a light through the water column.
Causes: soil erosion, runoff, algae and organic matter
(Biochemical oxygen demand, 5 day)
Typical Range: 0-6.3 mg/L
Indiana Average: 1.5 mg/L
Our result: 0 mg/L
Biochemical Oxygen Demand is a measure of the amount of oxygen used by aerobic(oxygen consuming) bacteria as the break down organic waste over 5 days.
Causes: municipal waste water, Eutrophication and hot weather
After we figured the results of the tests, we converted the results to the Q-value. We did this using the graphs that were on the worksheets we were given at the beginning of the project to use as a guideline. This is a man made scale that was formed to make it easier to compare the measurements from all of the different tests. The Q-value gives a general idea of the condition of the creek.