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School Switzerland County High School
Ohio Rivermile/Tributary 537.8
Web Site

http://www.switzerland.k12.in.us/Schools/high_school.htm

City Vevay
State Indiana
Class Senior AP Environmental Science
Instructor Bonnie Fancher
 
Photo Gallery
 
 
Water Quality Index Results
 
Date
Time
Today Weather
Yesterday Weather
Air Temp
°C
Water Temp
°C
DO
(% Sat)

E.Coli
(colonies per 100 mL )

pH
(units)
BOD 5
(mg/L)
H2O Temp Change
(°C)
Total Phosphate
(mg/L)
Nitrate
(mg/L)
Turbidity
(NTUs)
Water Quality Index
(%)
9/26/2005
15:45
Partly Cloudy
Heavy Rain
26
26
80
0
7.5
0
0
0
0
15
92.22
9/19/2006
16:00
Partly Cloudy
Heavy Rain
19
22
76
200
7.5
0.8
0
0
0
40
77.32
10/13/2006
16:00
Sunny
Light Rain
13.8
16
115
400
7.5
4
0
0
0
73
72.71
8/30/2007
15:50
Overcast
Sunny
28
33
115
0
8.2
0
0
1
0
18
84.48
9/25/2007
15:30
Partly Cloudy
Sunny
31
25
80
1000
8
0.8
0
0
0.62
70
73.60
10/29/2007
15:30
Sunny
Light Rain
19
19
105
0
8
2
0
2.2
0
17
82.75
11/20/2007
15:30
Partly Cloudy
Light Rain
16
19
88
0
7.5
0
0
20
90.90
3/20/2008
15:30
Partly Cloudy
Light Rain
11
15
75
500
7.5
0
0
0
70
71.55
4/13/2008
15:30
Overcast
Light Rain
19
20
140
0
8
4
0
2.5
0
21
75.79
   
   
Water Quality Index
90 - 100%
Excellent
70 - 90%
Good
50 - 70%
Medium
25 - 50%
Bad
0 - 25%
Very Bad
   
Guide for Water Quality Ranges
 
Dissolved Oxygen (% Saturation)
91 to 110
Excellent
91 to 90 > 110
Good
51 to 70
Fair
<50
Poor
 
Total Phosphate
< .10
Excellent
.11 to .16
Good
.17 to .58
Fair
.59 to 2.99
Poor
> 3.0
Very Poor
     
E. Coli (colonies per 100 mL)
< 50
Excellent
51 to 200
Good
201 to 1000
Fair
> 1000
Poor
 
Nitrate (NO3) (mg/L)
< 1.32
Excellent
1.76 to 3.52
Good
3.96 to 8.36
Fair
> 8.8
Poor
     
pH (pH units)
6.5 to 7.5
Excellent
6.0 to 6.4
7.6 to 8.0
Good
5.5 to 5.9
8.1 to 8.5
Fair
< 5.5
< 8.6
Poor
 
Turbidity (JTU, NTU)
1 to 10
Excellent
10.1 to 40
Good
40.1 to 150
Fair
> 150
Poor
     
Biochemical Oxygen Demand (mg/L)
<2
Excellent
2.0 to 4.0
Good
4.1 to 10
Fair
> 10
Poor
 
Water Temperature Change (°C)
0 to 2
Excellent
2.2 to 5
Good
5.1 to 9.9
Fair
> 10
Poor
 

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