Clean Lakes Program: Green Valley - Vigo County

 

Go back to the Indiana Clean Lakes Website

Go back to the Indiana Map to select another county

Indiana Clean Lakes Program Lake Report

Green Valley

  

Vigo County

1991

          
Sample Location: Deep Hole
Sample Date: 1991-07-24
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
1991
5.5
0.8
7.2
6
156
9.1
7.2
320
415
70.3
186.9
0.01
0.074
0.082
1.126
0.301
0.636
0.015
0.834
2.118
2.814
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
29
29
29
28
26
21
17
DO (mg/L)
12.2
12.4
12
2.5
0.3
0.2
0.2
                                                                           
% Water Column Oxic: 56
  
Blue-Green Dominance (% of NU): 100
  
          Carlson TSI: 66
                    Indiana TSI: 60
                                                                           
Blue-Greens (#/L): 363100   Greens (#/L): 0   Diatoms (#/L): 776   Other Algae (#/L): 0   Rotifers (#/L):   Zooplankton (#/L): 31
 
 

1997

          
Sample Location: Deep Hole
Sample Date: 1997-07-21
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
1997
4.6
0.6
21
6.5
14.3
9.19
7.41
242
250
69.3
111.9
0.01
0.01
0.061
0.045
34.87
0.022
0.022
0.018
0.502
1.296
1.252
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
31
29.8
29
27.5
21.9
17
14
DO (mg/L)
11
7.55
1.1
0.2
0
0
0
                                                                           
% Water Column Oxic: 50
  
Blue-Green Dominance (% of NU): 94
  
          Carlson TSI: 65
                    Indiana TSI: 32
                                                                           
Blue-Greens (#/L): 52429   Greens (#/L): 783   Diatoms (#/L): 1112   Other Algae (#/L): 1359   Rotifers (#/L): 329   Zooplankton (#/L): 37.1
 
 

1999

          
Sample Location: Deep Hole
Sample Date: 1999-07-21
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
1999
4.6
1.1
24
8
101
8.4
6.9
331
313
88
102
0.012
0.011
0.099
0.097
21.75
0.022
0.022
0.018
0.018
1.096
1.164
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
32.9
32.4
31.7
30.4
25
18.4
DO (mg/L)
10.3
10.4
8
2.5
0.2
0.2
                                                                           
% Water Column Oxic: 47
  
Blue-Green Dominance (% of NU): 40
  
          Carlson TSI: 63
                    Indiana TSI: 19
                                                                           
Blue-Greens (#/L): 630   Greens (#/L): 88   Diatoms (#/L): 264   Other Algae (#/L): 440   Rotifers (#/L): 132   Zooplankton (#/L): 31
 
 

2005

          
Sample Location: Deep Hole
Sample Date: 2005-07-11
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
2005
4.5
0.5
2
4
44
9.2
8.2
317
315
96
130
0.01
0.115
0.115
0.213
33
0.028
0.029
0.018
0.797
0.803
1.26
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
28
28
27.3
26.6
18.5
DO (mg/L)
10.2
9.8
4.4
0.2
0
                                                                           
% Water Column Oxic: 33.3
  
Blue-Green Dominance (% of NU): 96.3
  
          Carlson TSI: 69
                    Indiana TSI: 36
                                                                           
Blue-Greens (#/L): 19583   Greens (#/L): 277   Diatoms (#/L): 31   Other Algae (#/L): 216   Rotifers (#/L): 216   Zooplankton (#/L): 11.9
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-07-16
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
2012
4.3
0.6
12.3
4
31.3
8.4
7.3
304.5
323.9
101
130
0.01
0.069
0.1
0.078
47.18
0.021
0.022
0.018
0.069
1.11
1.19
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
30.5
30
29.4
29.2
28.6
24.7
DO (mg/L)
2.52
2.69
2.42
2.29
1.56
0.18
                                                                           
% Water Column Oxic: 75
  
Blue-Green Dominance (% of NU): 98.8
  
Blue-Green Dominance (% of cells): 85.5
           Carlson TSI: 68
                   
                                                                           
Blue-Greens (#/L): 5414646   Greens (#/L): 703760   Diatoms (#/L): 114900   Other Algae (#/L): 100537   Rotifers (#/L): 42   Zooplankton (#/L): 24
Blue-Greens (cells/L): 90512   Greens (cells/L): 905   Diatoms (cells/L): 115   Other Algae (cells/L): 101   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2014

          
Sample Location: Deep Hole
Sample Date: 2014-07-28
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
2014
5.5
0.6
8.1
4.27
7.8
7.2
274
311
106
112
0.01
0.01
0.034
0.051
43.04
0.013
0.013
0.056
0.103
1.234
1.19
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
24.76
24.77
24.76
24.37
21.65
DO (mg/L)
6.01
5.85
5.23
1.17
0.15
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 98.6
  
Blue-Green Dominance (% of cells): 93.5
           Carlson TSI: 64
                   
                                                                           
Blue-Greens (#/L): 488242   Greens (#/L): 19342   Diatoms (#/L):   Other Algae (#/L): 11136   Rotifers (#/L): 2092   Zooplankton (#/L): 1144
Blue-Greens (cells/L): 9523   Greens (cells/L): 117   Diatoms (cells/L):   Other Algae (cells/L): 12   Rotifers (cells/L): 2   Zooplankton (cells/L): 1
 
 

 

In 2011 CLP changed plankton sampling methods, thus the Indiana TSI is no longer calculated.
Epi
 Epilimnion
Alk
 Alkalinity (mg CaCO3/L)
DO
 Dissolved Oxygen (mg/L)
NH3
 Ammonia (mg-N/L)
SRP
 Soluable Reactive Phosphorus (mg-P/L)
Hypo
 Hypolimnion
Chl-a
 Chlorophyll-a (ug/L)
Light 3'
 Percent light penetration at 3ft
NO3
 Nitrate (mg-N/L)
TP
 Total Phosphorus (mg-P/L)
   
Cond
 Conductivity
1% Light Level
 Depth of the 1% light level (ft)
TKN
 Total Kjeldahl Nitrogen (mg-N/L)
Temp
 Temperature (oC)