Water Quality Index
School: Marion High School Field Biology/Composition
Date:8/31/99 Time:2:00 pm
Water Conditions:clear
Weather Conditions: warm
Air Temperature: 70's
Flow rate:16.5 cu.ft./3 second
River/Stream: Indian Creek
River Mile Marker:3-5
Location:Sac Fox Trail
Latitude deg. min. sec. 4649300mN
Longitude deg. min. sec. 61380mE
Site:Cedar Rapids, IOWA
Site Location or Address:
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Test 1
Dissolved Oxygen
DOday1 13 mg/L
% Sat 145
Q-Value 75
Weighing Factor 0.17
Total 12.8 %
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Test 2
Fecal Coliform
200 colonies/100mL
Q-Value 35
Weighing factor 0.16
Total 5.6 %
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Test 3
pH
units 8
Q-Value 82
Weighing factor 0.11
Total 9%
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Test 4
BOD
DOdays mg/L DOday113-DOday5 10 mg/L
Q-Value 57
Weighing factor 0.11
Total 6.2 %
Test 5
Temperature Change
Temp (site1) degrees centigrade
Temp (site 2) degrees centigrade
T= degrees centigrade 2 Degrees
Q-Value 90
Weighing Factor 0.10
Total 9 %
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Test 6
Phosphate
mg/L 1
Q-Value40
Weighing Factor 0.10
Total %
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Test 7
Nitrate
mg/L
Q-Value
Weighilng Factor 0.10
Total .10 %
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Test 8
Turbidity
meters feet 7.5
Q-Value 82
Weighing Factor 0.08
Total 6.6%
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Test 9
Total Solids
mg/L 70
Q-Value 85
Weighilng Factor 0.07
Total 5.9 %
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OVERALL WATER QUALITY INDEX %
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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