Clean Lakes Program: Pleasant - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Pleasant

  

Steuben County

1989

          
Sample Location: Deep Hole
Sample Date: 1989-07-11
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
1989
15.8
2
25
19
101
7.2
6.9
425
370
167
177
0.01
0.01
0.081
0.089
0.54
0.443
0.077
0.645
1.267
1.525
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)
28.5
28.2
28.2
26
22
20
19
17
14.5
12.5
12
11.2
11
11
DO (mg/L)
7.9
7.9
7.8
7.3
6.3
5.2
4.4
2.8
2
0.5
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 71.4
  
Blue-Green Dominance (% of NU): 35
  
          Carlson TSI: 59
                    Indiana TSI: 16
                                                                           
Blue-Greens (#/L): 3790   Greens (#/L): 3926   Diatoms (#/L): 1973   Other Algae (#/L): 996   Rotifers (#/L): 39   Zooplankton (#/L): 0
 
 

1992

          
Sample Location: Deep Hole
Sample Date: 1992-08-03
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
1992
15.8
1.9
20
15
106.23
7.9
7.5
400
380
121
159
0.01
0.006
0.022
0.022
0.368
0.322
0.041
0.862
0.46
0.23
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)
22.7
22.7
22.6
22.5
22
21.9
21.7
21.3
20.5
18.1
15
13.1
12.3
11.9
11.5
11.3
11.2
DO (mg/L)
8.9
8.9
8.9
8.9
8.3
7.8
7.5
7.4
5.9
0.5
0.2
0.2
0.1
0.1
0.1
0.1
0.5
                                                                           
% Water Column Oxic: 52.6
  
Blue-Green Dominance (% of NU): 32
  
          Carlson TSI: 50
                    Indiana TSI: 11
                                                                           
Blue-Greens (#/L): 3710   Greens (#/L): 5177   Diatoms (#/L): 229   Other Algae (#/L): 2198   Rotifers (#/L): 453   Zooplankton (#/L): 0
 
 

1997

          
Sample Location: Deep Hole
Sample Date: 1997-07-29
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
15.8
2.2
49
24
110.4
8.41
7.45
382
328
115.3
155.4
0.01
0.011
0.022
0.041
1.87
0.029
0.027
0.018
0.636
0.47
1.033
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
26.5
25.9
25
24
23
21
18.9
17
15.9
14.5
13.5
12.9
12.5
DO (mg/L)
8.7
8.8
8.8
8.7
8.5
8.8
7.1
5.4
1.7
0.9
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 60
  
Blue-Green Dominance (% of NU): 51
  
          Carlson TSI: 45
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 1125   Greens (#/L): 37   Diatoms (#/L): 697   Other Algae (#/L): 208   Rotifers (#/L): 122   Zooplankton (#/L): 10.6
 
 

2002

          
Sample Location: Deep Hole
Sample Date: 2002-07-29
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
15.8
2.1
55
21
90.2
8.2
7.5
435
340
123
144
0.014
0.014
0.016
0.038
1.67
0.013
0.013
0.03
0.474
0.927
1.054
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
26.2
26.2
26.2
26.2
26.2
26
23.7
19.5
17.2
15.4
13.9
13.2
12.8
12.6
12.4
12.3
DO (mg/L)
7.4
7.3
7.3
7.3
7.3
7.1
6.8
0.8
2.9
3
2.3
0.3
0.3
0.3
0.3
0.3
0.3
                                                                           
% Water Column Oxic: 32.2
  
Blue-Green Dominance (% of NU): 2984
  
          Carlson TSI: 43
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 0   Greens (#/L): 0   Diatoms (#/L): 0   Other Algae (#/L): 0   Rotifers (#/L): 0   Zooplankton (#/L): 9.7
 
 

2006

          
Sample Location: Site 1
Sample Date: 2006-06-26
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
2006
12
3.1
22
23.5
105
8.6
7.7
428.6
350.8
125
144
0.017
0.01
0.035
0.024
1.56
0.013
0.026
0.039
0.385
0.918
1.162
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)
25.5
25.6
25.6
25.6
25.1
24.7
23
19.6
17.6
16.6
15.9
15.2
14.4
13.8
13.4
DO (mg/L)
8.4
8.4
8.6
8.7
8.4
8.1
6.6
6.5
6.4
5.5
4.4
1.6
0.4
0
0
                                                                           
% Water Column Oxic: 77
  
Blue-Green Dominance (% of NU): 73.1
  
          Carlson TSI: 45
                    Indiana TSI: 16
                                                                           
Blue-Greens (#/L): 1038   Greens (#/L): 71   Diatoms (#/L): 0   Other Algae (#/L): 283   Rotifers (#/L): 24   Zooplankton (#/L): 4
 
 

2006

          
Sample Location: Site 2
Sample Date: 2006-06-26
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
2006
11.2
3.2
22
24.7
103.3
8.5
7.8
427.4
369.1
130
137
0.01
0.013
0.049
0.03
0.95
0.013
0.048
0.05
0.142
0.929
0.989
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)
25.7
25.6
25.6
25.5
25
24.7
22
19.6
17.4
16.6
16.2
15.9
15.8
DO (mg/L)
8.7
8.7
8.5
8.6
8.4
8.1
6.3
6.2
5.8
4.4
2.7
1.3
0.9
                                                                           
% Water Column Oxic: 91
  
Blue-Green Dominance (% of NU): 76.4
  
          Carlson TSI: 44
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 1211   Greens (#/L): 23   Diatoms (#/L): 11   Other Algae (#/L): 320   Rotifers (#/L): 11   Zooplankton (#/L): 8.2
 
 

2006

          
Sample Location: Site 3
Sample Date: 2006-06-26
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
2006
3
1.6
15
9
71.2
7.9
439
144
0.016
0.04
3.34
0.013
0.096
1.182
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
25.4
25
DO (mg/L)
7.3
7.2
5.7
5.6
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 1.7
  
          Carlson TSI: 51
                    Indiana TSI: 19
                                                                           
Blue-Greens (#/L): 1124   Greens (#/L): 535   Diatoms (#/L): 134   Other Algae (#/L): 63767   Rotifers (#/L): 615   Zooplankton (#/L): 30.7
 
 

 

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)