Water Quality Index
Andy, Joe, Lisa, and Vanessa


School: Marion High School; Block 3, group 5
Date: 8/25/98 Time: 11:45a.m.-1:15p.m.
Water Conditions: good
Weather Conditions: mild
Air Temperature: 75 degrees Farenheit
Flow rate:22.3 ft3/second
River/Stream:Indian Creek
River Mile Marker:none
Location:East Post RD, Cedar Rapids, IA
Latitude deg. min. sec.none
Longitude deg. min. sec.none
Site:Indian Creek
Site Location or Address:East Post Rd, Cedar Rapids, IA

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Test 1
Dissolved Oxygen
DOday1 mg/L 10
% Sat 117
Q-Value94
Weighing Factor 0.17
Total % 15.98
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Test 2
Fecal Coliform
colonies/100mL 400
Q-Value 27
Weighing factor 0.16
Total % 4.32
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Test 3
pH
units 8
Q-Value 84
Weighing factor 0.11
Total % 9.24
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Test 4
BOD
DOdays mg/L DOday1 11-DOday5 10 mg/L=1mg/L
Q-Value 98
Weighing factor 0.11
Total %10.78
Test 5
Temperature Change 1degree
Temp (site1) degrees centigrade
Temp (site 2) degrees centigrade
T= degrees centigrade
Q-Value 90
Weighing Factor 0.10
Total % 9
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Test 6
Phosphate
mg/L 1
Q-Value 40
Weighing Factor 0.10
Total %4
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Test 7
Nitrate
mg/L less than 1
Q-Value98
Weighilng Factor 0.10
Total % 9.8
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Test 8
Turbidity
meters feet 5
Q-Value 83
Weighing Factor 0.08
Total %6.64
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Test 9
Total Solids
mg/L 400
Q-Value 46
Weighilng Factor 0.07
Total %3.22
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OVERALL WATER QUALITY INDEX %
72.98
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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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