Clean Lakes Program: Pretty - Lagrange County

 

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Indiana Clean Lakes Program Lake Report

Pretty

  

Lagrange County

1989

          
Sample Location: Deep Hole
Sample Date: 1989-07-25
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
1989
24.4
2.8
54
26
109
7.4
6.5
325
340
141
168
0.01
0.01
0.01
0.016
0.337
0.606
0.026
0.405
1.402
1.572
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)
27
25.5
24.8
24
20
16.8
14
12
9.8
9
8
8
7.8
7.5
7
7
7
7
7
7
7
6.9
6.9
6.9
DO (mg/L)
8.7
8.9
8.8
7.9
8.4
6.4
4.3
3.7
3.4
2.8
2.6
2.2
2.6
2.6
2.2
2
1.6
1.3
1.1
0.8
0.6
0.3
0.2
0.1
                                                                           
% Water Column Oxic: 95.8
  
Blue-Green Dominance (% of NU): 45
  
          Carlson TSI: 41
                    Indiana TSI: 7
                                                                           
Blue-Greens (#/L): 1270   Greens (#/L): 241   Diatoms (#/L): 406   Other Algae (#/L): 597   Rotifers (#/L): 292   Zooplankton (#/L): 0
 
 

1993

          
Sample Location: Deep Hole
Sample Date: 1993-07-27
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
1993
24.4
3.5
60
28
106
8.5
7.6
370
300
141
161
0.01
0.09
0.01
0.129
2.12
0.062
0.028
0.025
0.426
0.46
0.733
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)
26
26
25
25
25
22.5
17
14.5
12
10
9
8
7.5
7
7
6.8
6.5
6.5
6.2
6.2
6
6
6
6
6
6
6
6
DO (mg/L)
9.1
9.1
9.1
9.1
8.5
6.6
4.9
2.2
2.2
2
1.5
1.6
1.3
1.3
1.1
0.8
0.7
0.4
0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 65.9
  
Blue-Green Dominance (% of NU): 67
  
          Carlson TSI: 39
                    Indiana TSI: 19
                                                                           
Blue-Greens (#/L): 2973   Greens (#/L): 104   Diatoms (#/L): 740   Other Algae (#/L): 197   Rotifers (#/L):   Zooplankton (#/L): 423
 
 

1997

          
Sample Location: Deep Hole
Sample Date: 1997-08-26
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
24.4
3.4
48
28
102.7
8.61
7.49
294
285
123.6
154.1
0.01
0.054
0.015
0.07
3.04
0.022
0.022
0.018
0.312
0.6
0.9
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)
22.1
22
21.8
21.3
21
20.99
20.9
20.1
17.4
13.9
12.1
11
10.2
9.9
9.2
8.9
8.2
8.1
8
7.9
7.5
7.5
7.2
7.2
7.1
7.1
7.1
DO (mg/L)
8.92
8.99
9.02
9
8.89
8.72
8.7
6.67
0.5
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 32
  
Blue-Green Dominance (% of NU): 74
  
          Carlson TSI: 42
                    Indiana TSI: 22
                                                                           
Blue-Greens (#/L): 5547   Greens (#/L): 128   Diatoms (#/L): 1125   Other Algae (#/L): 575   Rotifers (#/L): 102   Zooplankton (#/L): 6
 
 

2002

          
Sample Location: Deep Hole
Sample Date: 2002-08-12
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
2002
24.4
4.8
55
28
83
8.35
7.4
350
270
114
140
0.01
0.026
0.017
0.034
1.01
0.013
0.333
0.018
0.181
0.661
0.756
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)
27
27
27
27
27
26.2
25.7
18.9
16.8
14.4
12.2
10.1
9.2
8.3
7.6
7.2
7
6.7
6.7
6.4
6.3
6.2
6.2
6.2
DO (mg/L)
6.6
6.6
6.6
6.6
6.6
6.4
6.2
6.7
6.4
6
3.9
1.6
1.4
1.5
2
2.1
2
2
1.9
1.4
0.9
0.5
0.5
0.5
                                                                           
% Water Column Oxic: 78.7
  
Blue-Green Dominance (% of NU): 83
  
          Carlson TSI: 38
                    Indiana TSI: 16
                                                                           
Blue-Greens (#/L): 7440   Greens (#/L): 8   Diatoms (#/L): 101   Other Algae (#/L): 1399   Rotifers (#/L): 25   Zooplankton (#/L): 10.6
 
 

2006

          
Sample Location: Site 1
Sample Date: 2006-07-27
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
2006
25
3.6
16
23
101.3
8.7
7.5
322.3
245.4
108
142
0.01
0.01
0.021
0.017
0.14
0.018
0.018
0.018
0.275
0.706
0.698
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)
26.3
26.3
26.3
26.3
26.3
26.2
23.9
19.2
16.1
13.5
10.9
9.7
8.7
8.2
7.7
7.5
7.3
7.2
7.1
7
7
6.9
6.9
6.9
6.9
6.9
DO (mg/L)
8.2
8.2
8.2
8.2
8.1
8
10.2
9.6
5.8
2.7
3.2
4.3
4.1
3.8
4.5
4.2
6.7
6.5
2.9
2.4
1.7
1.2
0.7
0.5
0.3
0
                                                                           
% Water Column Oxic: 80
  
Blue-Green Dominance (% of NU): 64.4
  
          Carlson TSI: 34
                    Indiana TSI: 15
                                                                           
Blue-Greens (#/L): 580   Greens (#/L): 56   Diatoms (#/L): 89   Other Algae (#/L): 89   Rotifers (#/L): 78   Zooplankton (#/L): 8.4
 
 

2010

          
Sample Location: Deep Hole
Sample Date: 2010-08-09
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
2010
24.5
4.4
20.5
26.6
105
8.6
7.5
338
247
128
158
0.01
0.01
0.014
0.021
0.013
0.223
0.026
0.03
0.823
0.595
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)
27.3
27.1
26.8
26.8
26.7
26.6
25.3
19.5
15.6
12.8
10.6
8.7
7.8
7.2
6.6
6.4
6.2
6
5.9
5.7
5.7
5.6
5.5
5.5
5.4
5.4
DO (mg/L)
8
8.2
8.3
8.3
8.4
8.4
7.7
7.1
1.5
0.3
0.3
0.6
0.8
0.9
1.2
1.3
1.5
1.5
1.5
1.2
0.8
0.6
0.1
0.1
0
0
                                                                           
% Water Column Oxic: 73
  
Blue-Green Dominance (% of NU): 91.1
  
Blue-Green Dominance (% of cells): 54.9
           Carlson TSI: 41
                    Indiana TSI: 37
                                                                           
Blue-Greens (#/L): 95470   Greens (#/L): 40464   Diatoms (#/L): 5058   Other Algae (#/L): 32877   Rotifers (#/L): 0   Zooplankton (#/L): 7.9
Blue-Greens (cells/L): 2841   Greens (cells/L): 61   Diatoms (cells/L): 183   Other Algae (cells/L): 33   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-07-02
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
24.99
2.1
68.1
8.4
7.7
332.8
225.7
124
147
0.01
0.01
0.01
0.016
2.12
0.013
0.111
0.018
0.018
1.042
1.27
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)
27.3
27.3
27.3
27.3
27
26
21.5
17.2
14.7
12.4
10.2
9.5
8.3
7.2
6.4
6.2
6
5.8
5.6
5.4
5.3
5.3
5.3
5.3
5.3
5.3
DO (mg/L)
5.06
5.21
5.35
5.4
5.39
5.69
6.92
6.89
7.14
5.8
5.43
5.52
5.82
6.1
6.03
5.9
5.87
5.78
5.41
4.98
3.87
3.68
2.9
2.93
2.87
2.46
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 87
  
Blue-Green Dominance (% of cells): 59.4
           Carlson TSI: 43
                   
                                                                           
Blue-Greens (#/L): 3020008   Greens (#/L): 2049291   Diatoms (#/L): 17976   Other Algae (#/L):   Rotifers (#/L):   Zooplankton (#/L):
Blue-Greens (cells/L): 145247   Greens (cells/L): 21465   Diatoms (cells/L): 198   Other Algae (cells/L):   Rotifers (cells/L):   Zooplankton (cells/L):
 
 

 

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)