Date: Fri, 25 Feb 2000 11:18:51 -0600
School: Rock Valley Community School in Rock Valley, Iowa
Date: Time: 2/24/00
Water Conditions: some ice and rising more water
Weather Conditions: cloudy and mild
Air Temperature: degrees centigrade 13.6 degrees centrigrade
Flow rate: meters/second
River/Stream: Rock River
River Mile Marker:
Location: Rock Valley, Iowa
Latitude deg. min. sec.
Longitude deg. min. sec.
Site: boat ramp
Site Location or Address: north Side of Rock Valley
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Test 1
Dissolved Oxygen
DOday1 mg/L 9.7
% Sat 70
Q-Value 75
Weighing Factor 0.17
Total % 12.75
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Test 2
Fecal Coliform did positive/negative test, results were positive
colonies/
Q-Value
Weighing factor 0.16
Total %
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Test 3
PH
units 8.03
Q-Value 82
Weighing factor 0.11
Total % 9.02
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Test 4
BOD Did not do.
DOdays mg/L DOday1-DOday5 mg/L
Q-Value
Weighing factor 0.11
Total %
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Test 5
Temperature Change .63 degrees centigrade
Temp (site1) degrees centigrade 0.2
Temp (site 2) degrees centigrade .83
T= degrees centigrade
Q-Value 91
Weighing Factor 0.10
Total % 9.1
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Test 6
Phosphate
mg/L .32
Q-Value 90
Weighing Factor 0.10
Total % 9.0
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Test 7
Nitrate
mg/L 8.67
Q-Value 53
Weighilng Factor 0.10
Total % 5.3
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Test 8
Turbidity
Feet 1 foot
Q-Value 61
Weighing Factor 0.08
Total % 4.88
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Test 9
Total Solids
mg/L 350
Q-Value 53
Weighting Factor 0.07
Total % 3.71
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OVERALL WATER QUALITY INDEX %53.76 without BOD Test and Fecal
Coliform
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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