School: Cedar Valley Christian School
Date: November 10, 1999 Time: 10:30 am
Water Conditions: greenish, cold, 12 degrees C
Weather Conditions: sunny, clear, cool
Air Temperature: 14 degrees Celsius
Flow rate: less than 0.3 meters/second
River/Stream: Indian Creek
River Mile Marker: N/A
Location: 2 miles N of County Home Rd., Marion IA
Latitude: 42 deg., 6.990 min.
Longitude: 91 deg., 34.020 min.
Site: Birmingham farm
Site Location or Address: 3514 Coffey Ln., Marion IA
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Test 1
Dissolved Oxygen
10.25 mg/L
95% Sat
Q-Value 99
Weighing Factor 0.17
Total 16.83%
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Test 2
Fecal Coliform
12625 colonies/100mL
Q-Value 9
Weighing factor 0.16
Total 1.44%
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Test 3
pH 7.5
Q-Value 92
Weighing factor 0.11
Total 10.12%
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Test 4
BOD
(DOday1) 10.25 - (DOday5)
8.8 = 1.45 mg/L
Q-Value 78
Weighing factor 0.11
Total 8.58%
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Test 5
Temperature Change
Temp (site 1) 12 degrees Celsius
Temp (site 2) 12
degrees Celsius
D T = 0 degrees Celsius
Q-Value 93
Weighing Factor 0.10
Total 9.3%
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Test 6
Phosphate
0.6 mg/L
Q-Value 52
Weighing Factor 0.10
Total 5.2%
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Test 7
Nitrate 2.2 mg/L
Q-Value 93
Weighing Factor 0.10
Total 9.3%
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Test 8
Turbidity
18.7 NTU
Q-Value 62
Weighing Factor 0.08
Total 4.96%
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Test 9
Total Solids
0.63 mg/L
Q-Value 80
Weighing Factor 0.07
Total 5.6%
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OVERALL WATER
QUALITY INDEX
71.33% Good
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Overall Water
Quality Index Quality of Water
90% - 100% Excellent
70% - 90% Good
50% - 70% Medium
25% - 50% Bad
0% - 25% Very bad
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